Fits select 1963-2003 Buick, Chevrolet, GMC, Oldsmobile, and Pontiac vehicles. These UMI sway bar relocation spacers are designed to provide critical clearance for the steering idler arm, particularly when upgrading to large 1-5/16" diameter front sway bars. By moving the bushing mounting points 0.600" forward, these mounts solve common interference issues on lowered or modified GM suspension systems.

Constructed from 0.375" thick laser-cut mild steel, each spacer is finished with a durable black anodizing to resist corrosion and maintain a professional appearance. The mounting holes are slightly elongated to accommodate minor chassis variations and ensure a straightforward installation on factory mounting points.

• Moves sway bar 0.600" forward for idler arm clearance
• Specifically designed to clear large 1-5/16" sway bars
• Fabricated from 0.375" (3/8") laser-cut mild steel
• Black anodized finish for superior corrosion resistance
• Elongated mounting holes for precise fitment
• Manufacturer Part Number: 3068

Fits select 1978-1988 Buick Regal, Chevrolet El Camino, Malibu, Monte Carlo, GMC Caballero, Oldsmobile Cutlass, and Pontiac Grand Prix or Bonneville (SBC Engines).

UMI Performance P/N 90058 heavy-duty engine mounts replace the bulky factory clamshell mounts in GM G-Body applications. These mounts position a Small Block Chevy (SBC) in the precise factory location while providing a significantly more rigid foundation for high-horsepower builds. Constructed from 3/16-inch laser-cut steel and finished in a durable gloss black powder coat, these brackets are engineered to withstand the stresses of drag racing and high-performance street use.

When paired with UMI P/N 90051 solid motor mounts, these brackets help eliminate engine rotation, improving throttle responsiveness and creating essential clearance for large header primaries or turbocharger plumbing. While ideal for racing applications where packaging is tight, please note that solid mounting increases Noise, Vibration, and Harshness (NVH) compared to rubber alternatives.

• Replaces factory clamshell mounts for a more compact and durable setup
• Maintains exact factory engine height and location for SBC engines
• Fabricated from heavy-duty 3/16-inch laser-cut steel
• Includes Grade 8 mounting hardware for maximum strength
• Durable gloss black powder coat finish
• Compatible with UMI 90051 solid mounts or factory-style rubber mounts
• Proudly manufactured, tested, and raced in Philipsburg, PA - USA
• Manufacturer Part Number: 90058

Note: These mounts are specifically designed for Chevrolet Small Block engines and may not work with Oldsmobile or Pontiac powerplants.

Simplify your suspension tuning with the UMI Performance Thrust Bearing Kit (MPN 7995-102). Specifically designed for use with Viking and UMI Performance coilovers, this kit is engineered to reduce the friction generated between the coil spring and the threaded spring seat during ride height adjustments.

By placing these needle bearings between the spring and the seat, you allow the adjustment nut to rotate freely without binding against the spring. This is a critical upgrade for enthusiasts who intend to fine-tune their vehicle's stance while the coilovers are installed on the car, as it prevents component galling and significantly reduces the effort required to turn the spanner wrench under load.

• Compatibility: Engineered for Viking and UMI Performance coilover systems.
• Function: Eliminates spring-to-seat friction for smoother height adjustments.
• Durability: High-load needle bearings designed for automotive suspension environments.
• Included Hardware: Complete thrust bearing set and one heavy-duty spanner wrench.
• Installation: Recommended for all on-car height adjustments to protect hardware finish.

The UMI Performance 7917-101 Thrust Bearing Kit is a specialized upgrade designed to facilitate smoother ride height adjustments on Viking and UMI coilover shocks. By installing these needle-roller bearings between the coil spring and the threaded spring seat, you eliminate the friction that occurs when turning the adjuster nut against a compressed spring.

• Precision Tuning: Allows the spring seat to rotate freely on a bearing surface, significantly reducing the effort required to adjust vehicle height.
• Protects Hardware: Minimizes wear on the aluminum spring seats and coilover threads by preventing binding under load.
• Application Support: Engineered specifically for use with UMI Performance and Viking coilover systems.
• Installation Note: While not required for initial assembly, this kit is essential for anyone planning to perform on-car height adjustments.
• Manufacturer Part Number: 7917-101

Fits 2015-2024 Ford F-150 (all submodels including Raptor, Tremor, and XL).

The UMI Performance leaf spring pin kit provides a precision centering solution for late-model Ford F-150 trucks equipped with rear lowering systems or pinion angle shims. Factory centering pins often lack the necessary height to properly engage the axle pad when shims are introduced, leading to potential alignment shifting. These extended-length pins ensure your rear suspension remains correctly indexed for a secure, professional installation.

• Manufactured from 4140 CrMo (Chromoly) steel for maximum shear strength
• Tough black zinc finish for superior corrosion resistance
• Extended head design specifically for use with pinion angle shims and lowering blocks
• Includes Grade 8 mounting hardware
• 100% Made in the USA

Product Specifications:

• Manufacturer Part Number: 6577
• Pin Diameter: 3/4"
• Pin Length: 0.850"
• Total Length: 4.25"
• Thread Pitch: 1/2"-20
• Quantity: Set of 4 pins

Fits 2015-2024 Ford F-150 (XL, XLT, Lariat, King Ranch, Platinum, Limited, Raptor, SSV, Police Responder, Tremor, and STX).

The UMI Performance 6575 transmission spacer is engineered to correct driveline angles on lowered 2015-2024 Ford F-150 trucks. Lowering these vehicles can often introduce drivetrain vibrations; this 1/4-inch thick spacer raises the transmission back to a position that restores proper geometry and ensures a smooth driving experience. This component features a unique design that rotates into position for a straightforward installation.

• Corrects driveline angle to eliminate lowering-induced drivetrain vibration
• 1/4-inch thickness provides the necessary height adjustment for lowered suspension setups
• Black zinc finish provides durable corrosion resistance and rust prevention
• Direct bolt-in design for easy installation with no permanent modifications required
• 100% Made in the USA
• Manufacturer Part Number: 6575

Fits select 2015-2024 Ford F-150 models including XL, XLT, Lariat, King Ranch, Platinum, Raptor, and Tremor.

Correct your driveline geometry and eliminate lowering-induced vibrations with the UMI Performance Pinion Shim Kit. When using a rear flip kit to lower your F-150, the factory pinion angle is often compromised, leading to drivetrain shudder and premature U-joint wear. These shims provide a 2.5-degree taper to rotate the pinion back into the optimal range for smooth operation.

Constructed from CNC-machined 6061-T6 aluminum for maximum durability, these shims feature a natural finish and are designed as a direct bolt-in component. Please note that this kit is specifically designed for use with UMI Performance flip kits to ensure proper fitment and alignment.

• Part Number: 6574
• 2.5 Degree Taper
• Material: 6061-T6 Aluminum
• Finish: Natural Bare Aluminum
• Quantity: Includes one pair of shims
• Installation: Direct Bolt-In
• 100% Made in the USA

Fits 2015-2024 Ford F-150 models including XL, XLT, Lariat, King Ranch, Platinum, Limited, Raptor, Tremor, SSV, and Police Responder.

Achieve precise alignment control with the UMI Performance 6572 front camber kit. Designed specifically for the Ford F-150, this kit replaces the factory hardware to provide a secure, adjustable solution for trucks that are lowered, used in performance applications, or simply need a reliable factory alignment. The eccentric adjuster allows for fine-tuned camber settings, while the included guide plate ensures that once your alignment is set, it stays locked in place even under heavy suspension loads.

• Eccentric adjuster dials in exact camber settings for improved handling or tire wear.
• Guide plate design prevents alignment slippage by locking the adjuster in place.
• Durable black zinc protective coating for superior corrosion resistance.
• Ideal for maintaining alignment on lowered trucks or off-road Raptor/Tremor models.
• Street and race proven construction for long-term reliability.
• Manufacturer Part Number: 6572.
• 100% Made in USA.

Fits select 2015-2026 Ford F-150 models including Raptor, Tremor, XL, XLT, Lariat, Platinum, and King Ranch.

Improve your truck's front-end geometry and alignment precision with the UMI Performance adjustable upper A-arm kit. These arms are engineered to correct alignment angles on leveled or lifted trucks while offering significantly higher durability than factory components. Constructed from heavy-duty CNC-machined US steel and finished in a high-tech Cerakote coating, these arms provide superior corrosion resistance and long-term reliability. The revised arm geometry allows for precise camber adjustment, ensuring optimal tire wear and improved handling characteristics under load.

• Manufactured from heavy-duty CNC-machined US steel for maximum strength
• High-tech Cerakote finish provides industry-leading corrosion resistance
• Greasable Delrin bushings ensure smooth operation and eliminate deflection
• Adjustable camber settings allow for precise front-end alignment
• Proven through rigorous fatigue, track, and load testing protocols
• Complete kit includes all necessary installation hardware
• 100% Made in the USA
• Manufacturer Part Number: 6565-R

Fits 2015-2026 Ford F-150 (King Ranch, Lariat, Limited, Platinum, Police Responder, Raptor, SSV, STX, Tremor, XL, and XLT).

Restore proper suspension geometry and extend tire life on your lowered truck with the UMI Performance adjustable upper control arm kit. Specifically engineered for 2015-2026 Ford F-150 models with a 2-inch drop or more, these arms are most effective for trucks in the 3-to-6-inch lowering range. They provide the necessary adjustability to bring caster and camber back to factory specifications, correcting the alignment issues common with lowered late-model F-Series trucks.

These arms are CNC-machined from premium US steel and TIG welded for superior strength. The 6565-B kit includes greasable Delrin bushings to eliminate the deflection found in factory rubber bushings while maintaining smooth, quiet operation. Finished in a black Cerakote for maximum durability and corrosion resistance, these arms are a robust solution for street or performance applications.

• Designed specifically for trucks with 2" to 6" of lowering
• Adjustable camber and caster correction for precise alignment
• CNC-machined and TIG-welded US steel construction
• Greasable Delrin bushings for improved response and longevity
• High-performance black Cerakote finish
• 100% Made in the USA
• Manufacturer Part Number: 6565-B

Fits 2015-2024 Ford F-150 (King Ranch, Lariat, Limited, Platinum, Police Responder, Raptor, SSV, STX, Tremor, XL, and XLT).

The UMI Performance Shackle Hardware Kit is a high-grade replacement for factory leaf spring shackle fasteners. Original hardware often becomes corroded or damaged during removal, making a fresh set of bolts essential for any suspension service or shackle upgrade. This kit provides the necessary strength and reliability to secure your rear suspension components to the chassis.

Constructed from high-grade materials, this kit is specifically designed to handle the load and stress requirements of the F-150 platform. Whether you are installing lowering shackles or performing routine maintenance, using fresh, high-quality hardware ensures proper torque retention and long-term durability.

• Direct fit for 2015-2024 Ford F-150 chassis
• Includes (4) high-grade bolts, (4) nuts, and (4) washers
• Recommended for use when original hardware is worn or unusable
• Engineered for high-strength suspension applications
• Manufacturer Part Number: 6562BK

Fits select 2015-2024 Ford F-150 (all trims).

The UMI Performance 6562 reverse leveling kit is engineered to eliminate the excessive factory rake of your F-150, providing a more aggressive and level stance. These four-position adjustable shackles allow for a rear drop of up to 1-1/2 inches, bringing the rear down to better match the front ride height. For 4WD models, the kit enables an additional 1-1/4 inch drop (for a total of up to 2-3/4 inches) by removing the factory leaf spring blocks. UMI includes eight dedicated U-bolt spacers to allow for block removal while retaining the factory U-bolts.

Built for durability in both street and performance applications, these heavy-duty steel shackles utilize squeak-free Delrin bushings. Delrin offers a significant upgrade over factory rubber, providing a stable, maintenance-free pivot point. This kit is a direct bolt-in solution and requires no permanent modifications to your vehicle.

• Four-position adjustable shackle for fine-tuned rear height
• Provides up to 1-1/2 inch rear drop
• 4WD models can achieve an additional 1-1/4 inch drop via leaf spring block removal
• Includes (8) U-bolt spacers for 4WD block removal
• Self-lubricating, squeak-free Delrin bushings
• Heavy-duty steel construction, 100% Made in the USA
• Manufacturer Part Number: 6562

Fits select 2015-2024 Ford F-150 (XL, XLT, Lariat, King Ranch, Platinum, Limited, Raptor, Tremor, Police Responder, SSV, and STX).

The UMI Performance complete lowering kit provides a comprehensive solution for 2015-2024 Ford F-150 owners seeking a significantly improved stance and high-performance handling. This system is engineered to drop the front up to 4 inches and the rear up to 6.5 inches. Front ride height is fully adjustable via a precision coilover design, while the rear utilizes a flip kit paired with heavy-duty 4-position adjustable shackles to fine-tune the rake.

To ensure superior ride quality and control at any height, UMI includes Viking double-adjustable dampers. These shocks feature 19 distinct positions for both compression and rebound, allowing you to dial in the suspension for daily commuting, mountain driving, or autocross. The kit is compatible with both steel and composite leaf springs and includes 2.5-degree pinion shims to maintain proper driveline angles. Constructed in the USA, this kit is a 100% direct bolt-in upgrade using factory mounting points.

• Viking double-adjustable dampers with 19 positions for compression and rebound
• Front ride height adjustable up to 4-inch drop via coilover design
• Rear ride height adjustable up to 6.5-inch drop via flip kit and shackles
• Heavy-duty 4-position rear shackles with squeak-free Delrin bushings
• 600 lb/in (2WD) or 850 lb/in (4WD) front spring rate options
• 2.5-degree pinion shims and transmission spacer for driveline correction
• Strong double-shear front mounts compatible with factory lower A-arms
• Includes longer leaf spring pins, new bump stops, and U-bolt plates
• 100% direct bolt-in design; Made in USA
• Manufacturer Part Number: 656063-2

Fits 2015-2024 Ford F-150 models including King Ranch, Lariat, Limited, Platinum, Raptor, Tremor, XL, and XLT.

The UMI Performance complete lowering kit (MPN 656063-1) delivers a sleek, aggressive stance with precision-tuned handling for the 2015-2024 Ford F-150. This system replaces the factory suspension with front coilovers and a rear flip kit, allowing for an adjustable drop of up to 4 inches in the front and 6.5 inches in the rear. The package is anchored by Viking double-adjustable dampers, featuring 19-position compression and 19-position rebound adjustment to allow fine-tuning for daily driving, mountain roads, or autocross events.

Built for durability and performance, the kit features heavy-duty 4-position adjustable rear shackles equipped with squeak-free Delrin bushings. To ensure proper drivetrain geometry after lowering, UMI includes 2.5-degree pinion shims and a transmission spacer for precise driveline angle adjustment. The front assembly utilizes strong double-shear mounts that are fully compatible with factory lower A-arms for a straightforward, 100% bolt-in installation.

• Viking front and rear dampers with 19-position independent compression and rebound adjustment
• Adjustable ride height: up to 4" front drop and 6.5" rear drop
• Heavy-duty 4-position adjustable rear shackle with precision Delrin bushings
• 2.5-degree pinion shims and transmission spacer included for driveline alignment
• Front spring rates: 600 lb/in (2WD) and 850 lb/in (4WD)
• Includes longer leaf spring pins and new bump stops
• U-bolt plates feature shock relocation kit mounting holes
• Compatible with both steel and composite leaf springs
• 100% Made in the USA
• Manufacturer Part Number: 656063-1

Fits select 1963-1987 Chevrolet and GMC C10, C15, C1500, R10, and R1500 pickups and Suburbans.

Give your classic GM truck a more aggressive stance and improved handling with UMI Performance front lowering springs. These springs provide a consistent 2-inch drop, lowering the center of gravity to reduce body roll and improve cornering response. Designed with a medium-firm 900 lb/in spring rate, they are engineered to balance daily ride comfort with the performance needed for back-road carving and occasional hauling. Each spring is manufactured in the USA from high-quality spring steel and finished in a durable black powder coat for long-term corrosion resistance.

• Provides a 2-inch front ride height reduction
• Medium-firm 900 lb/in spring rate for improved stability
• Durable black powder coat finish
• Proudly manufactured in the USA
• Manufacturer Part Number: 6452F

Fits select 1973-1987 Chevrolet C10, R10 and GMC C15, C1500, R1500 trucks.

Lower the rear of your square-body GM truck by 6 inches with the UMI Performance 6410 flip kit. This kit relocates the axle above the leaf spring for a significant drop while correcting suspension geometry. To prevent the common issue of wheels shifting forward during lowering, the integrated saddle brackets move the axle slightly rearward to keep the wheels perfectly centered in the wheel wells.

Built for durability and heavy-duty use, the lower leaf plates are constructed from 1/4-inch laser-cut plate steel. The kit includes extra heavy-duty U-bolts and is finished in a gloss black powder coat for long-lasting protection against the elements. This bolt-on solution comes complete with all necessary brackets, stand-offs, and polyurethane bump stops for a comprehensive installation.

• Lowers rear suspension 6 inches for a level stance
• Moves axle above the leaf spring pack
• Corrects axle position to maintain centered wheel alignment
• 1/4-inch laser-cut steel lower plates for maximum strength
• Durable gloss black powder coat finish
• Includes polyurethane bump stops and heavy-duty U-bolts
• Manufacturer Part Number: 6410
• 100% Made in Philipsburg, PA – USA

Fits select 1964-1972 Buick, Chevrolet, Oldsmobile, and Pontiac A-Body models, including Chevelle, GTO, Cutlass, Skylark, and El Camino.

Decades of exposure to moisture and road debris often lead to severe corrosion around the factory body mounts on GM A-Body frames. This corrosion can prevent the body from being properly secured and aligned. The UMI Performance 4055 body mount frame repair kit is a 14-piece solution designed to restore structural integrity and provide a precisely sized hole for new mount installation. These components are laser-cut from 1/8-inch steel to ensure a perfect fit and long-lasting repair.

• Restores frame surface to like-new condition for accurate body mounting
• 14-piece kit provides comprehensive coverage for frame mount locations
• Manufactured from 1/8-inch thick laser-cut steel for durability
• Supplied in bare metal finish to ensure optimal weld penetration
• Proudly designed and manufactured in Philipsburg, PA-USA
• Manufacturer Part Number: 4055

Note: This is a weld-in repair kit. Installation requires cutting out the damaged factory material and welding these replacement plates into position.

Fits select 1967-1988 GM A-Body and G-Body vehicles, including Buick Regal, Chevrolet Chevelle, El Camino, Monte Carlo, Oldsmobile Cutlass, and Pontiac Grand Prix/GTO.

Correct the stance and handling of your classic GM chassis with UMI Performance rear lowering springs. These springs provide a 2-inch drop from factory ride height, designed in collaboration with a leading Sprint Cup chassis engineer to deliver professional-grade suspension geometry. The linear 130 lb/in rate ensures predictable, consistent handling through corners, effectively eliminating the "floating" sensation common in older A-body and G-body platforms.

Each spring is cold-wound from premium 9254 Chromium Silicon (CrSi) wire to maintain height and performance over time without sagging. Finished in a durable black powder coat for corrosion resistance, these springs are ideal for Pro-Touring, autocross, or high-performance street applications where reduced body roll and increased stability are required.

• Part Number: 4051R
• Drop: 2-Inch Rear
• Spring Rate: 130 lb/in (Linear)
• Material: 9254 CrSi Premium Spring Wire
• Finish: Tough Black Powder Coat
• Country of Origin: Proudly Manufactured in the USA

Fits select 1967-1988 GM A-Body and G-Body vehicles, including Buick Regal and Skylark, Chevrolet Chevelle, Malibu, and Monte Carlo, Oldsmobile Cutlass, and Pontiac GTO and Grand Prix.

Standard factory suspensions often suffer from a vague, "floating" sensation during high-speed cornering or spirited driving. UMI Performance engineered these rear lowering springs to eliminate that instability while providing a purposeful 1-inch drop. Designed in collaboration with a leading Sprint Cup chassis engineer, these springs utilize a 130 lb/in linear rate to ensure consistent handling characteristics whether you are on the autocross course or a long-distance cruise.

Each spring is wound from premium 9254 Chrome Silicon (CrSi) wire, a material chosen for its superior fatigue resistance and ability to maintain a consistent ride height over years of use. The linear rate prevents the unpredictable weight transfer associated with progressive springs, making them an ideal choice for Pro-Touring builds and street performance. Finished in a durable black powder coat, these springs are built to withstand the elements while providing a significant upgrade over aged OE coils.

• Manufacturer Part Number: 4050R
• Drop Height: 1.000 in.
• Spring Rate: 130 lb/in (Linear)
• Material: 9254 Chrome Silicon Premium Wire
• Finish: Tough Black Powder Coat
• Country of Origin: USA
• Application: Rear suspension

Fits select 1967-1972 GM A-Body models including Chevrolet Chevelle, El Camino, Monte Carlo, Oldsmobile Cutlass, 442, Buick Skylark, and Pontiac GTO/Tempest.

Designed in conjunction with a leading Sprint Cup chassis engineer, the UMI Performance 4050F front lowering springs are engineered to improve handling and stance without sacrificing ride quality. These springs feature a 530 lb/in linear rate, providing increased stiffness over stock components to reduce body roll and lower the vehicle's center of gravity. Whether you are building a Pro-Touring machine, an autocross competitor, or a refined street cruiser, these springs deliver the performance and durability required for aggressive driving.

The 4050F springs provide a 1-inch drop for vehicles equipped with a Small Block Chevy (SBC), aluminum-head Big Block Chevy (BBC), Pontiac 400, or LS-series engines. They can also be used on full-weight Big Block applications to achieve a more aggressive nose-down rake. Each spring is wound from premium 5160 CrSi wire and finished in a durable black powder coat for long-lasting corrosion resistance.

• Manufacturer Part Number: 4050F
• Spring Rate: 530 lb/in linear
• Drop Height: 1 inch
• Material: Premium 5160 CrSi wire
• Finish: Tough black powder coat
• Designed and manufactured in the USA
• Ideal for Pro-Touring, autocross, and performance street applications

Fits select 1963-1981 Buick, Chevrolet, GMC, Oldsmobile, and Pontiac models, including Chevelle, El Camino, Camaro, Firebird, Nova, and GTO.

The UMI Performance 1-1/4" (32mm) solid front sway bar is a critical upgrade for modernizing the handling of classic muscle cars. This bar is designed to significantly reduce body roll and maintain a flatter tire contact patch during cornering, improving steering response without sacrificing overall ride comfort. Each sway bar is CNC-bent from 4140 Chrome Moly (CrMo) steel for exceptional strength and consistent torsional performance.

• Manufactured from CNC-bent 4140 CrMo solid steel for superior durability
• 1-1/4 inch (32mm) diameter provides high roll resistance for flatter cornering
• Finished in a durable gloss black powder coat for corrosion protection
• Standard kit includes high-durometer polyurethane bushings and mounting clamps
• Equipped with polyurethane bushing endlinks for reduced deflection and improved response
• Designed to mount using factory locations
• Compatible with UMI billet aluminum bracket kit (P/N 0047)
• 100% manufactured, tested, and raced in the USA
• Manufacturer Part Number: 4035-B

Fits select 1964-1972 GM A-Body vehicles, including Chevrolet Chevelle, El Camino, and Monte Carlo; Pontiac GTO, LeMans, and Grand Prix; Oldsmobile 442 and Cutlass; and Buick Skylark and GS.

Improve the handling and stability of your classic GM A-Body with this heavy-duty 1-inch solid rear sway bar. Engineered to significantly reduce body roll and understeer, this bar provides a more balanced suspension feel during aggressive cornering. Beyond its handling benefits, the solid construction helps maintain a level chassis for straighter, more consistent launches at the drag strip.

The UMI Performance 4034-R is manufactured from 1-inch solid 4140 Chrome Moly (CrMo) steel. Each bar is hot-formed and heat-treated as a single piece to ensure maximum structural integrity and "memory" retention. Unlike cold-bent alternatives, this process ensures the bar maintains its shape and spring rate even under heavy, repeated loading.

• Diameter: 1-inch (25.4mm)
• Construction: Solid 4140 Chrome Moly steel
• Manufacturing: Hot-formed and heat-treated for long-term durability
• Part Number: 4034-R
• Primary Benefits: Reduces body roll, minimizes understeer, and improves launch stability

Fits select 1964-1972 GM A-Body vehicles including Buick Skylark/GS, Chevrolet Chevelle/El Camino/Monte Carlo, GMC Sprint, Oldsmobile Cutlass/442, and Pontiac GTO/LeMans/Tempest.

The UMI Performance 1-inch solid rear sway bar is engineered to significantly reduce body roll and understeer while improving overall cornering balance. Beyond improved handling on the street or autocross course, this bar helps maintain a level chassis during hard straight-line launches, making it a versatile upgrade for both performance driving and drag racing applications.

Constructed from 1-inch solid 4140 Chromium-Molybdenum (CrMo) steel, this bar is hot formed and heat treated as a single piece. The hot forming process ensures superior strength and better shape memory compared to standard cold-bent bars, allowing the component to maintain its torsional rigidity over years of hard use.

• Manufactured from 1" solid 4140 CrMo steel for maximum torsional strength
• Hot formed and heat treated to maintain shape and performance integrity
• Reduces body roll and improves cornering capabilities
• Enhances chassis leveling during high-torque launches
• One-piece construction for maximum durability
• Manufacturer Part Number: 4034-B

Fits 1964-1972 GM A-Body vehicles including Chevrolet Chevelle and El Camino, Pontiac GTO and LeMans, Oldsmobile 442 and Cutlass, and Buick Skylark and Special.

Reinforce your classic GM A-Body chassis with UMI Performance trailing arm mount braces. As power levels increase, factory rear control arm mounts become a weak point, prone to bending or breaking under heavy torque loads. These tubular reinforcements tie the upper and lower control arm mounts together, significantly increasing structural rigidity and improving driving performance.

UMI Performance braces are manufactured from high-strength DOM steel and precision TIG welded for maximum durability. Unlike many competing designs, these braces are specifically bent to contour to the vehicle's floor pan, ensuring a correct fitment without requiring you to dent or modify the floor. Each kit (MPN 4028-B) is adjustable for a perfect fit and includes all necessary heavy-duty hardware.

• Fabricated from heavy-duty DOM steel tubing
• Precision TIG welded for superior strength
• Contoured design clears floor pan without modifications
• Adjustable for a perfect fit on all 1964-1972 A-Body chassis
• Includes new longer Grade 8 hardware, nuts, and washers
• Manufacturer Part Number: 4028-B