Fits 1990-2005 Mazda Miata (NA/NB) models equipped with a factory manual steering rack. Part number: SPL TRE NAMR.

The SPL NA/NB Miata Tie Rod Kit provides critical bumpsteer adjustment for lowered vehicles. By utilizing precision-machined spacers to relocate the tie rod end pivot point, these units allow you to align the steering geometry with the suspension arms. This optimization significantly reduces dynamic toe change, also known as bumpsteer, as the suspension cycles through its travel during cornering or over uneven road surfaces.

Constructed for professional-grade durability, these tie rod ends replace soft factory bushings with maintenance-free, US-made FK PTFE-lined spherical bearings. These self-cleaning bearings eliminate deflection, resulting in more predictable steering response, reduced front tire shoulder wear, and improved stability across track curbing and rough pavement.

• Materials: 6061-T6 aluminum turnbuckles and 4140 chromoly steel tapered studs.
• Hardware: 304 stainless steel spacers (1/8" and 1/4") and anodized titanium fasteners.
• Precision Bearings: FK PTFE-lined spherical bearings for smooth, bind-free operation.
• Weight: Lightweight design at 2.52 lbs (1.14 kg) per side.
• Adjustment: Engineered for precise dynamic geometry and bumpsteer correction.

Proudly engineered and assembled in the USA.

Fits select 2019-2026 BMW 3 Series (G20/G21), 4 Series (G22/G23/G26), i4, M3 (G80), and M4 (G82/G83).

SPL Parts adjustable tie rod ends are engineered to correct bumpsteer on lowered BMW G-chassis vehicles. By relocating the tie rod end pivot point using the included 304 stainless steel spacers, you can effectively minimize dynamic toe changes as the suspension compresses. This results in more predictable handling through corners and increased stability over rough roads or track curbing, while also reducing premature tire shoulder wear common on modified suspensions.

• Precision Adjustment: Includes 1/8-inch 304 stainless steel spacers to optimize steering geometry and maximize articulation.
• Lightweight Strength: CNC-machined 6061-T6 aluminum bodies weigh just 1.49 lbs (0.68 kg) per side, 3% lighter than factory units.
• High-End Hardware: Features Ti-6Al-4V titanium hardware with a blue anodized finish and 4140 chromoly steel tapered studs.
• Racing Grade Bearings: Equipped with maintenance-free, PTFE-lined FK spherical bearings made in the USA for smooth operation and long service life.
• Direct Replacement: Designed to improve steering feel and response under heavy braking and cornering loads.
• Manufacturing: Engineered, machined, and assembled in the USA.
• Manufacturer Part Number: SPL TRE G8X

Fits 2019-2026 BMW Z4 and 2020-2026 Toyota GR Supra.

SPL Parts Front Tie Rod Ends (TRE) are engineered to correct bump steer issues that arise from modified suspension geometry, such as increased caster or altered lower control arm positioning. By allowing the tie rod end pivot point to be relocated, these ends optimize the steering arc to maintain alignment settings throughout the suspension travel, leading to more predictable handling and reduced lap times.

On significantly lowered vehicles, relocating the pivot point prevents the tie rod from binding against the chassis or steering rack components. This relief of mechanical stress prevents inner tie rods from bending or breaking under high-load racing conditions. Designed, engineered, and assembled in the USA, these components provide the durability required for track-focused builds.

• Adjustable pivot point to correct bump steer geometry
• Relocates pivot to prevent tie rod binding on lowered vehicles
• Improves steering response and consistency during cornering
• Includes all necessary hardware for installation
• Proudly engineered and manufactured in the USA
• Sold as a pair
• Manufacturer Part Number: SPL TRE G29

Fits select 2002-2026 Subaru WRX, WRX STI, and BRZ, Toyota 86 and GR86, and Scion FR-S.

SPL Parts Front Tie Rod Ends (TRE) are designed to correct the suspension geometry on vehicles with modified caster or lowered ride heights. By allowing the tie rod end pivot to be relocated, these components effectively eliminate bump steer, ensuring more predictable handling and reduced lap times. For significantly lowered cars, this relocation prevents the tie rod from binding, which protects the inner tie rods from bending or breaking under heavy load.

Construction features precision CNC-machined and heat-treated 4140 Chromoly shanks to withstand the high stresses of track and drift use. The turnbuckles are crafted from gun-drilled 2024-T351 Aluminum alloy for a high strength-to-weight ratio and finished in black anodizing. High-quality Teflon-lined FK Rod Ends provide 26 degrees of articulation, ensuring smooth operation throughout the steering cycle.

• Corrects bump steer and improves steering response
• CNC-machined heat-treated 4140 Chromoly shanks
• Black anodized gun-drilled 2024-T351 Aluminum alloy turnbuckles
• Teflon-lined FK Rod Ends with 26 degrees of articulation
• Stainless steel spacers included
• Sold as a pair
• Proudly engineered and assembled in the USA
• Manufacturer Part Number: SPL TRE FRS

Fits select 2006-2021 BMW 1, 2, 3, and 4 Series models including M2, M3, and M4.

SPL Parts Front Tie Rod Ends (TRE) are designed to correct bumpsteer caused by modified caster or altered lower control arm geometry. On significantly lowered vehicles, these ends allow the tie rod pivot point to be relocated, maintaining proper steering geometry and preventing the tie rod from binding. By optimizing the pivot point, these adjustable ends reduce the risk of inner tie rods breaking or bending under high-load racing conditions, ultimately improving steering response and reducing lap times.

• Corrects bumpsteer for vehicles with modified ride height or caster
• Prevents tie rod binding and mechanical failure on lowered cars
• Relocatable pivot point for precision geometry adjustment
• Sold as a pair
• Proudly engineered and manufactured in the USA
• Manufacturer Part Number: SPL TRE E9X

Fits 1989-1994 Nissan 240SX and 1990-1996 Nissan 300ZX (all models).

SPL Parts Front Tension Rods (TR) provide precise adjustment of front caster, allowing you to optimize turn-in response and compensate for alignment variances. These rods replace soft factory rubber bushings with low-friction 3/4-inch FK Spherical Bearings, eliminating bushing deflection under heavy braking and cornering for a more direct, responsive steering feel.

Engineered for maximum performance and durability, the large 1-3/8 inch diameter rods are CNC-machined from 6061-T6 billet aluminum. Both the main rods and the 4130 chromoly double adjusters are gun-drilled to reduce unsprung weight while maintaining exceptional strength and stiffness. The assembly is finished with blue anodized titanium hardware for further weight savings without compromising structural integrity.

• Manufacturer Part Number: SPL TR S13
• Material: 1-3/8" 6061-T6 Billet Aluminum
• Adjuster: Gun-drilled 4130 Chromoly Double Adjuster
• Bearings: 3/4" 3-piece FK Rod Ends with chemically bonded PTFE/Teflon liner
• Hardware: Blue Anodized Titanium
• Country of Origin: Proudly engineered and made in the USA

Fits 1926 Bentley 3-Litre Base and Speed Model.

SPL Parts Front Tension Rods (TR) provide precise adjustment of front caster, allowing you to optimize turn-in response and correct alignment variances. By replacing factory rubber bushings with low-friction 3/4-inch FK Spherical Bearings, these rods eliminate steering deflection and provide a more direct, responsive feel through the steering wheel.

The main rods are CNC-machined from 1 3/8-inch billet 6061-T6 aluminum and gun-drilled to minimize unsprung weight without compromising structural stiffness. For ease of maintenance and adjustment, the 4130 chromoly double adjuster allows for precise caster settings while the arm remains installed. The assembly is finished with blue-anodized titanium hardware for maximum weight savings.

• CNC-machined 1 3/8-inch billet 6061-T6 aluminum rods
• Gun-drilled construction to reduce unsprung weight
• 3/4-inch FK 3-piece spherical bearings with chemically bonded PTFE liners
• 4130 chromoly double adjuster for on-car alignment
• Blue-anodized titanium hardware
• Operating temperature range: -65°F and up
• Proudly engineered and assembled in the USA
• Manufacturer Part Number: SPL TR R32 GTR

Fits 2021-2026 BMW M3 and M4 (G8X) RWD models, including Base, Competition, CS, and CSL. (Note: These are not compatible with AWD/xDrive models).

SPL Parts Front Tension Rods (TR) provide the necessary range for front caster adjustment, allowing drivers to optimize turn-in response and correct left-to-right caster variances. By replacing the soft factory rubber bushings with low-friction, articulating FK Spherical Bearings, these arms eliminate mushy steering feel and bushing deflection under heavy braking and cornering loads. The included stainless steel spacers also allow for fine-tuning of anti-dive geometry.

Engineered for professional-grade performance, the links are precision CNC machined from billet 2024 aluminum hex rods and gun-drilled to minimize unsprung weight without sacrificing rigidity. The exclusive 360-degree Rotating Clamp design provides easy access to lock in alignment settings quickly. For additional weight savings, the assembly features blue anodized Titanium hardware, offering high strength at a fraction of the weight of steel.

• Billet 2024 aluminum hex links, gun-drilled and black anodized
• FK JMX Series hardened 3-piece Teflon-lined spherical bearings
• Blue anodized Titanium socket head cap screws for weight reduction
• Rotating 6061-T6 aluminum clamp design for precise locking
• Stainless steel anti-dive spacers for geometry adjustment
• ASTM A574 bolts with minimum 170,000 psi tensile strength
• Teflon/PTFE liners rated for -65º to 325º F
• Made in the USA; sold as a pair

Manufacturer Part Number: SPL TR G8X

Fits select 2012-2023 BMW 2 Series, 3 Series, and 4 Series models, including 228i, 230i, 320i, 328d/i, 330e/i, 335i, 340i, 428i, 430i, 435i, 440i, M235i, and M240i (F2X/F3X chassis).

SPL Parts Front Tension Rods (TR) provide a wide range of front caster adjustment, allowing for precise alignment to optimize turn-in response and correct caster variances. By replacing the soft factory rubber bushings with low-friction FK spherical bearings, these arms eliminate bushing deflection under load for significantly more responsive steering feel and consistent suspension geometry.

The rods are CNC machined from billet 2024 aluminum alloy and gun-drilled to minimize unsprung weight without compromising structural rigidity. The exclusive 360-degree rotating clamp design provides easy access to lock in alignment settings quickly. For additional weight savings, the kit includes blue anodized titanium hardware and stainless steel spacers that allow for tuning anti-dive geometry.

• Billet 2024 aluminum alloy hex rods, precision CNC machined and gun-drilled
• FK Spherical Bearings with chemically bonded PTFE liners for low friction and quiet operation
• Blue Anodized Titanium hardware for maximum strength and reduced weight
• 360-degree Rotating Clamp design for precise alignment locking
• Operating temperature range: -65º to 325º F
• Made in the USA
• Sold as a pair
• Manufacturer Part Number: SPL TR F3X

Fits select 2006-2021 BMW 1 Series, 3 Series, M2, M3, and M4 models (E8X, E9X, and F8X chassis).

SPL Parts Front Tension Rods (TR) provide a wide range of front caster adjustment, allowing for precise alignment to optimize turn-in response and correct side-to-side caster variances. These arms replace the compliant factory rubber bushings with low-friction FK Spherical Bearings, eliminating deflection under braking and cornering loads for a significantly more connected steering feel. The included stainless steel spacers also allow for fine-tuning of anti-dive geometry.

Engineering for performance and weight reduction, the rods are CNC machined from 2024 billet aluminum alloy and gun-drilled to minimize unsprung weight without sacrificing structural stiffness. An exclusive 360-degree rotating clamp design provides easy access for locking in alignment settings quickly. For further weight savings, the assembly utilizes blue-anodized titanium hardware for superior strength and corrosion resistance.

• FK JMX Series hardened rod ends with chemically bonded PTFE/Teflon liners for quiet, low-friction operation
• Precision CNC machined 2024 billet aluminum hex rods for high strength and reduced unsprung mass
• Blue-anodized titanium hardware for maximum weight savings
• 360-degree rotating clamp design for precise alignment locking
• Operating temperature range: -65º to 325º F
• Includes stainless steel spacers for anti-dive geometry adjustment
• Sold as a pair; manufactured in the USA
• Manufacturer Part Number: SPL TR E9X

Fits 2016-2024 Chevrolet Camaro LS, LT, LT1, SS, and ZL1 models.

SPL Parts Front Tension Rods (TR) provide a significant range of front caster adjustment, allowing for precise alignment to optimize turn-in response and correct for factory variances. By replacing the soft, compliant rubber bushings with low-friction FK Spherical Bearings, these arms eliminate bushing deflection under braking and cornering loads for a more communicative and responsive steering feel. Integrated stainless steel spacers also allow for fine-tuning of the vehicle's anti-dive geometry.

The rods are CNC machined from billet 2024-T351 aluminum alloy and gun-drilled to minimize unsprung weight while maintaining superior structural rigidity. SPL utilizes an exclusive 360-degree rotating clamp design for easy alignment adjustments, secured by blue anodized titanium hardware. The FK JMX hardened high-misalignment rod ends feature a chemically bonded PTFE/Teflon liner to ensure quiet operation, low friction, and an extremely high dynamic load capacity.

• Billet 2024-T351 aluminum hex rods, gun-drilled for weight reduction
• Blue Anodized Titanium adjustment hardware
• FK JMX hardened high-misalignment spherical bearings with PTFE liner
• 360-degree rotating clamp for precise, easy locking of alignment settings
• Stainless steel spacers for anti-dive geometry tuning
• Manufacturer Part Number: SPL TR CAM6

Fits 1990-1996 Nissan 300ZX (Base, 2+2, and Turbo models).

SPL Parts PRO Solid Aluminum Subframe Bushings (SSB) replace the soft, compliant factory rubber bushings to eliminate unwanted movement of the subframe relative to the chassis. This rigid mounting prevents the subframe from shifting or bouncing under heavy drivetrain torque or high suspension loads, which is essential for maintaining consistent suspension geometry and significantly reducing wheel hop during hard launches.

This kit features an innovative slide-in shim system that allows enthusiasts to fine-tune the vehicle's roll center and anti-squat characteristics. By raising the subframe with the included shims, you can correct the roll center on lowered vehicles, though this increases anti-squat. Conversely, lowering the subframe decreases anti-squat. For those concerned with NVH, the kit includes optional rubber isolation washers to dampen noise transfer between the subframe and the chassis.

• Precision CNC machined from Billet 6061-T6 Aluminum
• Adjustable slide-in shim system for roll center and anti-squat tuning
• Includes optional rubber isolation washers for noise reduction
• Complete kit for one vehicle
• Engineered and manufactured in the USA
• Manufacturer Part Number: SPL SSB Z32

Fits 1989-1998 Nissan 240SX Base, LE, SE, and XE (S13 and S14 chassis).

SPL Parts PRO Solid Aluminum Subframe Bushings (SSB) replace the factory rubber bushings to eliminate subframe movement relative to the chassis. By locking the subframe in place, these bushings prevent geometry shifts under heavy drivetrain torque or suspension loads, significantly reducing wheel hop and improving overall handling precision.

These bushings feature a unique slide-in shim system that allows drivers to fine-tune the roll center and anti-squat behavior. Raising the subframe helps correct the roll center on lowered vehicles at the cost of increased anti-squat, while lowering the subframe decreases anti-squat to improve traction. The current design is fully Formula Drift (FD) regulation compliant, allowing you to maintain OEM height while meeting competition standards.

• Precision CNC machined from 6061-T6 billet aluminum
• Adjustable shim system for roll center and anti-squat tuning
• Includes optional rubber isolation washers to minimize noise transfer
• Formula Drift regulation compliant design
• Sold as a complete kit for one vehicle
• Proudly engineered and manufactured in the USA
• Manufacturer Part Number: SPL SSB S13

Fits select 2007-2025 Nissan 370Z, Z, and Infiniti G35, G37, and Q40 models. These SPL Parts SOLID series Differential Mounting Bushings (SDBS) replace compliant factory rubber and silicone-filled bushings to secure the differential housing firmly to the rear subframe.

The OE rear differential bushing is prone to failure under aggressive driving, often leaking its internal silicone fluid—a condition visible as black streaks on the rear subframe. These solid replacements eliminate differential rotation and "bouncing" during hard launches, which significantly reduces wheel hop and improves power transfer to the pavement. By maintaining proper drivetrain alignment, these bushings also help protect the driveshaft and half shafts from shock-load damage.

Engineered and manufactured in the USA, these bushings are precision CNC machined from T6061 billet aluminum for exact tolerances. Because Nissan and Infiniti do not offer these bushings as standalone replacement parts, this kit provides a cost-effective alternative to purchasing an entire new rear subframe assembly.

• CNC machined T6061 billet aluminum construction
• Eliminates differential movement for improved traction and throttle response
• Includes front pumpkin bushings and the rear subframe mount bushing
• Included bushing driver tool facilitates the removal of the factory rear bushing
• Complete kit for one vehicle
• Made in the USA
• Manufacturer Part Number: SPL SDBS Z34

Fits 1990-1998 Nissan 240SX (S14) and 300ZX (Z32).

SPL Parts PRO Solid Aluminum Differential Mounting Bushings (SDB) eliminate the energy loss and deflection found in factory rubber bushings. By securing the differential solidly to the subframe, these bushings prevent the differential from bouncing under hard launches and heavy acceleration. This rigid mounting significantly reduces wheel hop and improves power transfer to the pavement while helping to protect the driveshaft and half shafts from shock-load damage.

Every bushing in the kit is precision CNC machined from 6061-T6 billet aluminum to ensure an exact fit in the factory mounting locations. This comprehensive kit includes both the front pumpkin bushings and the rear subframe mounting bushings, providing a complete solution for one vehicle.

• Replaces soft factory rubber bushings with solid mounts
• Eliminates differential movement for improved power transfer
• Reduces wheel hop and drivetrain shock loads
• Precision CNC machined from 6061-T6 billet aluminum
• Includes front and rear mounting components for one car
• Engineered and manufactured in the USA
• Manufacturer Part Number: SPL SDB S14

Fits select 2019-2026 BMW 2 Series (G42), 3 Series (G20), 4 Series (G22/G23/G26), i4, Z4 (G29), and Toyota GR Supra (A90/A91).

SPL Parts Solid Differential Mount Bushings replace the compliant factory rubber bushings to eliminate differential movement within the subframe. Under hard launches and high-torque track driving, the stock bushings are prone to excessive deflection and eventual tearing. By securing the differential solidly, these bushings reduce wheel hop, improve power transfer to the pavement, and help protect the driveshaft and half shafts from shock loading and misalignment damage.

Since the factory bushings are not sold separately by the manufacturer, these solid replacements offer a cost-effective alternative to purchasing an entire new subframe. Each kit is precision CNC machined in the USA from 6061-T6 billet aluminum for a precise press-fit and long-term durability.

• Eliminates differential "bounce" under hard acceleration
• Improves throttle response and power delivery
• Prevents drivetrain component damage caused by excessive deflection
• Precision CNC machined from 6061-T6 billet aluminum
• Includes front pumpkin bushings and rear subframe-to-differential bushing
• Proudly engineered and manufactured in the USA
• Manufacturer Part Number: SPL SDB G29

Fits 1990-1996 Nissan 300ZX Base, 2+2, and Turbo models.

SPL Parts Bronze Shifter Bushings (SB) are engineered to eliminate the vague, mushy feel often found in the Z32 shifter linkage. By replacing the fragile factory Teflon components, these bushings provide a significantly more direct and mechanical connection to the transmission for precise gear engagement.

Each bushing is machined from oil-impregnated bronze, ensuring constant lubrication for the shifter linkage. This high-wear material is designed to outlast the OEM plastic bushings, which are prone to cracking and degradation over time. This is a complete kit containing all necessary bushings for one vehicle.

• Provides a more direct and positive shifter feel
• Oil-impregnated bronze construction for self-lubrication and durability
• Replaces prone-to-failure factory Teflon bushings
• Engineered, manufactured, and assembled in the USA
• Complete kit for one car
• Manufacturer Part Number: SPL SB Z32

Fits 2009-2024 Nissan GT-R (R35) models, including Premium, Nismo, Black Edition, and Track Edition.

SPL Parts FKS Rear Upper Control Arm Monoball Bushings (RUAB) replace factory rubber bushings to eliminate the deflection and bind that compromise handling under heavy cornering loads. By utilizing low-friction articulating spherical bearings, these bushings maintain precise suspension geometry, providing more consistent tire contact and significantly improved driver feedback.

Each shell is CNC machined from T6061 aluminum to a tolerance of 1/1000th of an inch for an exact press-fit into the factory control arms. The kit utilizes high-grade FK racing bearings featuring a self-lubricating Teflon liner, ensuring a long service life and maintenance-free performance in both street and track environments.

• Replaces soft OEM rubber bushings to eliminate suspension deflection and bind
• CNC machined T6061 aluminum bearing shells with 1/1000-inch precision
• High-load FK spherical bearings with self-lubricating Teflon liners
• Maintains optimum alignment settings under high cornering loads
• Complete kit includes components for one vehicle
• Manufacturer Part Number: SPL RUAB R35
• Proudly engineered and manufactured in the USA

Fits select 1992-2006 BMW 3 Series (E36, E46) and Z3 models.

SPL Parts FKS Series Rear Upper Arm Bushings (RKB) replace compliant factory rubber bushings with high-precision, low-friction articulating spherical bearings. By eliminating bushing deflection and reducing friction-induced bind, these monoball replacements maintain optimal suspension geometry under heavy cornering or braking loads. This ensures consistent camber and toe settings for more predictable handling and improved driver feedback.

Engineered for high-performance use, these bushings are a direct replacement for the OEM components, providing a significant upgrade for track-driven vehicles and performance enthusiasts. The CNC-machined aluminum shells ensure an exact press-fit into the factory arms.

• FK Racing Bearings with self-lubricating Teflon liners for maximum performance and longevity
• CNC machined T6061 Aluminum bearing shells (tolerances held to 1/1000th inch)
• Eliminates unwanted camber and toe changes under load
• Sold as a complete kit for one vehicle
• Manufacturer Part Number: SPL RUAB E36
• Proudly designed, engineered, and assembled in the USA

Fits 2015-2023 Ford Mustang (S550) models, including V6, EcoBoost, GT, Mach 1, Bullitt, and Shelby GT350/GT500.

SPL Parts Rear Upper Camber Arms (RUA) provide the necessary strength and clearance for high-performance S550 Mustang builds. Designed to solve the difficulty of adjusting camber from the cramped inboard side of the arm, this kit moves the adjustment point to the knuckle side. By locking the inner bolt into a single position and utilizing SPL's double adjustment mechanism, track-side alignments become significantly faster and more precise.

Each arm is CNC-machined from 6061-T6 billet aluminum and subjected to Finite Element Analysis (FEA) to ensure structural integrity under the high lateral loads generated by racing slicks. The assembly features hardened rod ends and blue anodized titanium hardware for maximum weight savings and durability. All wear components, including the rod ends, are fully replaceable to ensure long-term serviceability.

• 6061-T6 Billet Aluminum arm construction
• Hardened SPL double adjuster for precise camber settings
• Teflon-lined rod ends for smooth, bind-free articulation
• Blue anodized Titanium socket head cap screws
• Steel lockout washers and Grade 10.9 hex cap bolts with lock nuts
• Sold as a pair; Made in the USA
• Manufacturer Part Number: SPL RUA S550

Fits select 1989-1998 Nissan 240SX and 1990-1996 Nissan 300ZX.

The SPL Parts Rear Upper Arms (RUA) provide the necessary camber adjustment range for lowered vehicles and performance alignments. By replacing factory rubber bushings with high-quality spherical bearings, these arms eliminate deflection under load, delivering more predictable handling and increased rear suspension stability on both the street and the track.

Constructed using Finite Element Analysis (FEA), the CNC-milled 6061-T6 billet aluminum arms are engineered to exceed factory strength while reducing unsprung weight. The exclusive SPL Double Adjuster is built from electroless nickel-plated 4130 chromoly and features 6061-T6 aluminum rotating clamps for quick, corrosion-resistant adjustments. Every set includes blue anodized titanium hardware to further minimize weight without compromising structural integrity.

• CNC-milled 6061-T6 billet aluminum construction
• FK spherical bearings with self-lubricating PTFE liners
• Electroless nickel-plated 4130 chromoly double adjusters
• Blue anodized titanium hardware
• Increased rear camber adjustment range
• Made, engineered, and assembled in the USA
• Manufacturer Part Number: SPL RUA S13

Fits select 2021-2026 BMW M3 and M4 models (Base, Competition, xDrive, CS, and CSL).

SPL Parts adjustable Rear Upper Arms (RUA) are engineered to correct the aggressive camber curve found on G8X chassis BMWs, particularly those with lowered ride heights. These links replace the soft factory rubber bushings with smooth-articulating, Teflon-lined rod ends to eliminate bushing deflection and ensure consistent alignment under load. By providing a wide range of adjustment, this kit allows for precise rear camber settings to optimize traction during acceleration and maximize cornering grip while preventing premature inner-tire wear on both the street and the track.

The kit features a 6061-T6 billet aluminum curved rear upper camber arm and gun-drilled 6061-T6 aluminum traction links to minimize unsprung weight without sacrificing structural integrity. Adjustment is handled by an innovative 360-degree rotating clamp and a double-adjuster design, allowing for quick, precise changes without removing the arms from the vehicle. All components are finished in black anodizing for superior corrosion resistance and secured with blue anodized titanium socket head cap screws.

• Replaces factory rear wishbone and rear guide links (MPN: SPL RUA G8X)
• Lightweight gun-drilled 6061-T6 aluminum traction links
• 6061-T6 billet aluminum curved camber arms with black anodized finish
• Double adjuster design for easy on-car alignment
• Teflon-lined rod ends for smooth articulation and zero deflection
• Blue anodized titanium hardware reduces unsprung mass
• Proudly engineered and assembled in the USA

Fits select 2019-2026 BMW (230i, 330i, 330e, 430i, i4, M240i, M340i, M440i, Z4) and 2020-2026 Toyota GR Supra.

SPL Parts Rear Upper Lateral Links (RUA) provide the expanded camber adjustment range necessary for lowered vehicles and high-performance track or street alignments. On these platforms, the factory eccentric washer system often lacks the range required to return camber to optimal specifications. These links replace the soft OEM rubber bushings with FK Spherical Rod Ends, significantly reducing rear suspension deflection during hard cornering, heavy acceleration, and braking.

Engineered for ease of use and durability, these arms feature a 360-degree rotating clamp system. This design allows you to lock in alignment settings with a simple 3/16" Allen key, eliminating the need to wrestle with traditional jam nuts while trying to keep rod ends centered. The gun-drilled 2024 aluminum construction provides an exceptional strength-to-weight ratio, finished with blue-anodized titanium hardware for maximum weight savings and corrosion resistance.

• Gun-drilled 2024 Aluminum center links, clamps, and clevises
• Blue Anodized Titanium socket head cap screws
• FK Spherical Rod Ends with chemically bonded PTFE/Teflon liners
• Liner operating temperature range: -65°F to +325°F
• Maintenance-free, quiet operation with low friction and smooth articulation
• Proudly engineered and assembled in the USA
• Manufacturer Part Number: SPL RUA G29

Fits 2015-2021 BMW M2, M3, and M4 (F8X) including Competition, CS, and GTS models.

SPL Parts adjustable Rear Upper Arms (RUA) are essential for maintaining proper rear camber settings and minimizing tire wear on both street and track-driven F8X chassis vehicles. The factory BMW suspension features an aggressive camber curve through bump travel, which often results in excessive negative camber on lowered vehicles. These links replace the factory rear wishbones and rear guide links, providing the wide adjustment range necessary to optimize the contact patch for better traction and cornering grip.

Constructed from gun-drilled 2024 Aluminum, these links significantly reduce unsprung weight while maintaining high structural integrity. The 360-degree 6061-T6 Aluminum rotating clamp design enables fast, precise adjustments without the hassle of traditional jam nuts. To further reduce weight and prevent corrosion, the kit utilizes blue anodized Titanium socket head cap screws and a black anodized finish on the links.

• Precision CNC machined 2024 Aluminum gun-drilled links
• 6061-T6 Aluminum Rotating Clamps for easy adjustment
• Blue Anodized Titanium hardware reduces unsprung mass
• FK Teflon-lined Spherical Bearings eliminate bushing deflection and friction
• Black anodized finish for superior corrosion resistance
• Sold as a complete set of four (4) arms
• Manufacturer Part Number: SPL RUA F8X
• Proudly engineered and manufactured in the USA

Fits select 2012-2021 BMW 2 Series, 3 Series, and 4 Series models, including 228i, 230i, 320i, 328i, 335i, 340i, 428i, 430i, 435i, 440i, and M235i/M240i.

SPL Parts Rear Upper Control Arms (RUA) provide the expanded rear camber adjustment range necessary for lowered BMW F2X and F3X chassis. Factory eccentric washers are often insufficient for reaching proper alignment specifications on performance-oriented or lowered vehicles. These links offer the precision required for both dedicated track use and high-performance street applications.

The center links and clevises are constructed from gun-drilled 2024 Aluminum for maximum strength and minimal unsprung weight, secured with Blue Anodized Titanium socket head cap screws. SPL's 360-degree rotating clamp system allows for quick and easy alignment changes using a 3/16" Allen key, eliminating the need to fumble with traditional jam nuts while trying to maintain bearing orientation.

To ensure consistent handling, these arms feature FK Spherical Rod Ends with a chemically bonded PTFE/Teflon liner. These eliminate the deflection found in factory rubber bushings, reducing alignment changes during hard cornering, acceleration, and braking. The liner provides quiet, low-friction operation with high load capacity across a wide temperature range.

• Gun-drilled 2024 Aluminum center links and clevises
• Blue Anodized Titanium hardware
• FK Spherical Rod Ends with self-lubricating PTFE liners
• 360-degree rotating clamp system for jam-nut-free adjustment
• Operating temperature range: -65°F to +325°F
• Designed, engineered, and assembled in the USA
• Manufacturer Part Number: SPL RUA F3X

Fits 2006-2013 BMW 1 Series and 3 Series (E82/E88/E81/E87/E90/E91/E92/E93), including 1M and M3 models.

Factory non-M rear control arms are constructed from spot-welded sheet metal, which is prone to flexing and bending under the high loads of track use or high-torque applications. This deflection leads to inconsistent handling and unstable alignment geometry. The SPL Parts Rear Upper Arm Links replace these weak factory components with high-strength, gun-drilled 2024 Aluminum links to provide the stability and precision required for performance driving.

This comprehensive kit includes both the guide (traction) and camber (wishbone) arms. These arms utilize SPL's exclusive 360-degree rotating 6061-T6 Aluminum clamps for fast, precise adjustments. Blue anodized Titanium socket head cap screws are included to reduce unsprung weight without compromising strength. To eliminate the vague feel of factory rubber bushings, this set features custom 3-piece FK Bearings rod ends with chemically bonded PTFE liners for low-friction, quiet, and maintenance-free operation.

• Gun-drilled 2024 Aluminum links with a durable Black Anodized finish
• Includes both guide and camber arms (traction and wishbone)
• 6061-T6 Aluminum clamps with Blue Anodized Titanium hardware
• Precision 3-piece FK Rod Ends with Teflon (PTFE) liners for smooth articulation
• Eliminates bushing deflection for consistent rear suspension geometry
• Designed, engineered, and assembled in the USA
• Manufacturer Part Number: SPL RUA E9X

Fits all 2023-2026 Toyota GR Corolla models (Core, Circuit Edition, Premium, Premium Plus, and Morizo Edition).

SPL Parts Rear Upper Camber Arms (RUA) provide the precision adjustment needed to optimize tire contact patches and suspension kinematics on the 2023-2026 Toyota GR Corolla. By replacing soft factory rubber bushings with FK PTFE-lined spherical bearings, these arms eliminate deflection under high cornering and braking loads, resulting in more predictable handling and sharper steering response. These arms are essential for lowered vehicles to correct camber and prevent premature tire wear.

The SPL RUA E210 features an outboard, clamp-style double adjuster that allows for quick, on-car alignment changes without the hassle of traditional jam nuts. This design places the adjuster near the knuckle for easy accessibility. The arms are constructed from high-strength 6061-T6 aluminum and utilize 4130 chromoly steel adjusters for maximum durability in both street and competitive track environments.

• Huge camber adjustability range for track-focused or lowered setups
• 6061-T6 aluminum clevis and arm with black anodized finish
• 4130 chromoly steel double adjuster (electroless nickel plated)
• Ti-6Al-4V titanium 1/4-20 socket head hardware (blue anodized)
• Self-cleaning, US-made FK PTFE-lined spherical bearings
• On-car adjustment via outboard clamp design
• Manufacturer Part Number: SPL RUA E210
• Made in the USA

Fits 2009-2024 Nissan GT-R (R35) models including Premium, Nismo, Track Edition, T-spec, and Black Edition.

SPL Parts High Clearance Rear Traction Links (SPL RTRHC R35) are engineered to maximize wheel and tire clearance on the R35 platform. The high-clearance design allows for a wide range of setups, from aggressive road race fitments to 15-inch drag wheels. By replacing the compliant factory rubber bushings with precision FK Rod Ends, these links eliminate bushing deflection to maintain consistent toe settings during hard acceleration, heavy braking, and suspension travel.

These arms are fully length-adjustable, allowing for precise tuning of rear suspension bumpsteer characteristics for improved stability and predictable handling. Constructed from CNC-machined 7075 billet aluminum, they feature blue anodized titanium jam nuts for maximum weight reduction and strength without sacrificing durability.

• Eliminates factory rubber bushing deflection for improved rear-end stability
• Length adjustable for precise bumpsteer correction
• High-clearance design compatible with 15-inch drag wheels and wide race wheel setups
• CNC-machined 7075-T6 Billet Aluminum construction
• Oversized FK Rod Ends (made in CT, USA) with chemically bonded PTFE liners for low friction and high load capacity
• Blue Anodized Titanium jam nuts for weight savings
• Designed, engineered, and assembled in the USA
• Manufacturer Part Number: SPL RTRHC R35

Fits 2007-2025 Nissan 370Z and Z, and Infiniti G35, G37, and Q40 models.

SPL Parts Rear Traction Rods (RTR) replace the compliant, soft rubber bushings found in the factory links with a rigid, adjustable "Dogbone Style" link. By eliminating bushing deflection, these rods prevent unwanted geometry changes in the rear suspension during hard acceleration, heavy braking, and cornering, resulting in a more stable and predictable chassis. The adjustable length design also allows enthusiasts to fine-tune rear bumpsteer characteristics for optimized handling at various ride heights.

• Gun-drilled 2024-T351 aluminum center links provide exceptional strength with minimal weight.
• Blue Anodized Titanium socket head cap screws offer superior corrosion resistance and weight savings.
• 360-degree rotating clamp system allows for rapid alignment adjustments using a simple 3/16-inch allen key—no more fumbling with jammed nuts or bearing orientation.
• FK Spherical Bearings featuring a chemically bonded PTFE liner provide self-lubricating, low-friction operation and high load capacity.
• Self-cleaning bearing design ensures long-term reliability for both street and track environments.
• Designed, engineered, and assembled in the USA.
• Manufacturer Part Number: SPL RTR Z34D

Fits 1989-1998 Nissan 240SX and 1990-1996 Nissan 300ZX.

SPL Parts Rear Traction Links (RTR) replace the factory soft rubber bushings to eliminate deflection and maintain consistent suspension geometry under hard acceleration, braking, and cornering. By stabilizing the rear suspension, these arms provide a more predictable and planted feel for both street and track applications. The adjustable length allows for precise tuning of rear bumpsteer characteristics to optimize the car's handling dynamics.

Engineered using Finite Element Analysis (FEA), these links feature CNC-milled 6061-T6 Billet Aluminum clevises and gundrilled 2024-T351 aluminum dogbone bodies for an exceptional strength-to-weight ratio. Blue anodized titanium hardware further reduces unsprung weight without sacrificing structural integrity. Each arm is equipped with US-made FK Spherical Bearings featuring self-lubricating, chemically bonded PTFE liners for smooth, quiet articulation and high load capacity.

• CNC-milled 6061-T6 Billet Aluminum clevises and 2024-T351 aluminum dogbone
• Length adjustable design for fine-tuning rear bumpsteer
• High-strength Blue Anodized Titanium hardware reduces unsprung weight
• FK Spherical Bearings with self-cleaning, self-lubricating PTFE liners
• Eliminates bushing deflection for improved stability and predictability
• Sold as a pair; engineered and assembled in the USA
• Manufacturer Part Number: SPL RTR S13D