Designed for the Toyota 1NZ-FE (1.5L) engine, these Brian Crower valve springs provide the necessary tension to maintain valvetrain stability at higher RPM ranges. Replacing factory springs is critical when upgrading to high-lift performance camshafts or when building a forced-induction setup, as stock components often succumb to valve float under increased stress.

These springs are engineered from high-grade chrome silicon steel alloy to ensure consistent seat pressure and resistance to fatigue. They provide a direct-fit solution for the 1NZ-FE valvetrain, ensuring the valves close quickly and accurately to maintain engine timing and prevent catastrophic piston-to-valve contact.

• Engineered specifically for the Toyota 1NZ-FE platform
• Prevents valve float during high-RPM operation
• Compatible with both naturally aspirated and turbocharged builds
• Manufactured from premium chrome silicon steel for long-term durability
• Ideal for use with Brian Crower or other performance camshaft profiles

Fits Volkswagen and Audi models equipped with the 1.8T engine.

The Brian Crower Single Valve Spring and Titanium Retainer Kit is engineered to provide the high-RPM stability and valvetrain reliability required for performance builds. By replacing the factory components, this kit helps prevent valve float and ensures precise timing under increased boost or aggressive camshaft profiles. The lightweight titanium retainers reduce reciprocating mass, allowing the engine to rev more freely while maintaining essential seat pressure.

• High-quality single valve spring design for consistent seat and open pressure
• Precision-machined titanium retainers for reduced valvetrain weight
• Engineered for improved durability in high-performance 1.8T applications
• Designed to work with performance camshafts and increased boost levels

Fits Honda K Series and Mazda MZR engine platforms.

This Brian Crower valve spring and titanium retainer kit provides the essential valvetrain stability required for high-performance builds. Designed to handle increased lift and higher RPM ranges, this kit helps prevent valve float—a critical failure point in engines equipped with aggressive camshafts or forced induction. By combining precision-wound springs with CNC-machined titanium retainers, this kit reduces reciprocating mass while maintaining consistent seat pressure.

• High-quality valve springs engineered for high-RPM durability and increased lift capacity
• Lightweight titanium retainers to reduce valvetrain weight and improve response
• Specifically designed for Honda K Series and Mazda MZR valvetrain geometry
• Essential for builds utilizing aftermarket camshafts or high-boost applications
• Manufactured to exacting tolerances for reliable fitment and performance

Designed for the high-revving demands of performance BMW builds, the Brian Crower Beehive Valve Spring and Titanium Retainer Kit provides the valvetrain stability necessary for increased boost and higher RPM limits. This kit replaces factory components to mitigate valve float and improve harmonic resilience within the B58 cylinder head.

The beehive spring geometry features a reduced top diameter, which allows for a smaller, lighter retainer to reduce reciprocating mass. Paired with CNC-machined titanium retainers, this combination ensures the valvetrain remains responsive and controlled under extreme engine speeds and high-lift conditions.

• Fits BMW B58 engines (3.0L)
• Beehive spring design improves harmonics and reduces valvetrain mass
• CNC-machined titanium retainers for maximum strength and weight savings
• Engineered to support higher RPM and aftermarket camshaft profiles
• Complete kit includes springs and titanium retainers

Fits Toyota 2JZGTE and Lexus 2JZGE engines.

This Brian Crower Heavy Duty (HD) single spring and steel retainer kit provides the valvetrain stability required for high-boost, high-RPM 2JZ builds. Rated to support over 800whp, these components are engineered to prevent valve float and ensure precise timing under extreme cylinder pressures where factory valvetrain components often fail.

• Heavy-duty single-wound valve springs for increased seat pressure and valvetrain control
• Precision-machined steel retainers for maximum durability in high-stress environments
• Engineered to support engine builds producing 800+whp
• Compatible with high-lift performance camshafts and high-RPM operation

Ensure your valvetrain remains stable under high boost and high RPM with the Brian Crower HD Single Spring and Titanium Retainer Kit. Engineered for Toyota 2JZGTE and Lexus 2JSGE engines, this kit is specifically designed for high-performance builds exceeding 800 whp where standard valvetrain components risk failure or valve float.

The heavy-duty single springs are manufactured from premium chrome silicon valve spring wire, providing the increased seat and open pressure required for aggressive camshaft profiles. By pairing these with precision-machined titanium retainers, this kit significantly reduces reciprocating mass in the cylinder head, allowing for improved engine response and higher RPM capability without sacrificing durability.

• Fits Toyota 2JZGTE and Lexus 2JSGE engines
• Rated for high-output applications producing 800+ whp
• Heavy-duty single spring design for high-lift compatibility
• Aerospace-grade titanium retainers reduce valvetrain weight
• Prevents valve float and ensures reliable seal at extreme pressure

Fits Toyota 7M-GTE 3.0L Turbo engines.

This Supertech single valve spring set is engineered to provide the consistent tension and fatigue resistance required for high-performance 7M-GTE builds. Replacing worn factory springs is a critical step when increasing boost or raising the RPM limit to prevent valve float, which can lead to loss of power or catastrophic engine damage. These springs are designed to provide improved harmonics and seat pressure stability compared to aged OE components, ensuring the valvetrain remains controlled under demanding conditions.

• Engineered specifically for the 24-valve Toyota 7M-GTE engine
• Spring Type: Single Valve Spring
• Quantity: Full set of 24 springs
• Manufacturer: Supertech Performance

Maintain valvetrain stability and prevent valve float with this Supertech Performance Single Valve Spring Set. Designed specifically for the Audi and Volkswagen EA113 and EA888 TFSI engine families, these springs are engineered to handle the increased stress of higher RPM ranges and aggressive camshaft profiles found in performance-oriented builds.

Upgrading to Supertech springs ensures consistent seat pressure and improved harmonic control compared to worn or factory-standard components. This is a critical upgrade for forced induction or high-revving applications where precise valve timing is essential to engine longevity and power delivery.

• Engine Compatibility: Audi/VW EA888 and EA113 TFSI
• Spring Type: Single high-performance valve spring
• Quantity: Complete set of 16 springs
• Application: Replaces factory springs for high-RPM or high-boost builds
• Benefits: Reduces risk of valve-to-piston contact and improves valvetrain response

Proper valve lash is critical for valvetrain longevity and peak engine performance. This Supertech cam follower shim allows for precise clearance adjustments when building or maintaining high-performance overhead cam (OHC) cylinder heads. Precision-ground to exact tolerances, these shims provide the reliable, flat contact surface required between the cam lobe and the follower to ensure consistent timing and reduced wear.

• Diameter: 8mm
• Thickness: 1.95mm
• Component Type: Valvetrain Lash Shim
• Manufacturer: Supertech

Fits Nissan RB26DETT engines.

The HKS Pro Head Stud Kit is an essential upgrade for high-performance RB26 builds where factory head bolts often reach their physical limits. These high-strength fasteners provide the superior clamping force required to keep the cylinder head securely sealed to the engine block, even under the extreme cylinder pressures found in high-boost and high-horsepower applications.

By replacing the original equipment (OE) bolts with this precision-engineered stud kit, you significantly reduce the risk of head lift and head gasket failure. This kit is designed for enthusiasts and tuners who demand maximum reliability from their forced-induction Nissan powerplants.

• Engineered for high-tensile strength and durability
• Provides consistent and superior clamping force compared to factory bolts
• Helps prevent head gasket failure and cylinder head lift
• Essential for high-boost or competition RB26DETT engines
• Complete set of studs, nuts, and washers included

Fits Mitsubishi 4G63 engines, including those found in the Lancer Evolution I-IX and DSM platforms.

GSC Power Division HP Beehive Titanium Retainers are engineered to handle the stresses of high-RPM valvetrain cycles in performance-built 4G63 heads. By utilizing a beehive profile, these retainers allow for a smaller, lighter top tool while maintaining the necessary seat pressure for high-boost and high-lift applications. The high-strength titanium construction significantly reduces reciprocating mass compared to standard steel retainers, allowing for increased engine response and improved valvetrain stability at the limit.

• Precision CNC-machined from aerospace-grade titanium for maximum strength-to-weight ratio
• Beehive design reduces mass at the most critical point of the valvetrain
• Engineered specifically for high-pressure (HP) spring configurations
• Compatible with Mitsubishi 4G63 16-valve cylinder heads
• Direct fitment for GSC Beehive valve spring kits

Fits 2009-2023 Nissan GT-R models equipped with the VR38DETT engine. This GSC Power-Division valvetrain kit is engineered specifically for high-performance race applications where valvetrain stability and weight reduction are critical.

The single conical spring design offers a lighter alternative to traditional dual-spring setups while providing superior harmonic damping. By reducing the mass at the top of the spring, this design minimizes harmonics and allows for higher RPM limits with better valve control during aggressive lift cycles. Paired with precision-machined titanium retainers, this kit significantly reduces valvetrain inertia, allowing for faster engine response and increased reliability under extreme racing conditions.

• Specifically engineered for the Nissan VR38DETT engine platform
• Single conical spring design for reduced reciprocating mass and improved harmonics
• High-strength titanium retainers for maximum weight savings and durability
• Optimized for dedicated race-only applications and high-lift performance camshafts
• Designed to maintain valvetrain stability at high engine speeds

Fits Mitsubishi 4G63 engines.

This Supertech Dual Valve Spring Kit provides the critical valvetrain stability required for high-performance Mitsubishi 4G63 builds. Engineered to manage the increased demands of aggressive camshaft profiles and high-RPM operation, the dual-spring design significantly reduces valve float and provides better harmonic damping than single-spring configurations.

By maintaining precise control over valve movement, this kit ensures consistent engine performance and protects your valvetrain during competition use or high-boost applications.

• Designed specifically for the Mitsubishi 4G63 engine platform
• Dual-spring architecture for superior high-RPM valve control
• Engineered to prevent valve float and maintain valvetrain integrity
• Manufactured with high-quality materials for long-term durability

Fits Toyota 4AGE 20V and select VW/Audi models with 1.8T AEB or 2.7T APB 5-valve engines (1.8T / 2.7T).

This Supertech intake valve spring is engineered to handle the increased demands of high-performance 5-valve cylinder heads. Designed to prevent valve float and maintain valvetrain stability at higher RPMs, this spring provides the consistent seat pressure and rate required for modified engines. Whether you are building a 20V 4AGE Silvertop/Blacktop or a large-port AEB/APB 5V head, these springs ensure the intake valves close reliably under boost and high-lift conditions.

• Precision-wound specifically for 5-valve intake configurations
• Reduces risk of valve float in high-RPM applications
• Direct fit for Toyota 4AGE 20V, VW 1.8T (AEB), and Audi 2.7T (APB) platforms
• Compatible with high-lift performance camshafts
• Note: This item is available via drop ship only

Fits 2012-2021 Subaru BRZ and WRX, Scion FR-S, and Toyota 86 models equipped with the FA20 or FA20DIT engine.

The GSC Power-Division Dual Cylindrical Valve Spring Kit is engineered for high-performance Subaru FA20 engines that require superior valve control at elevated RPM levels. By utilizing a dual-spring design, this kit provides the necessary seat pressure and spring rate to prevent valve float, which is critical when running increased boost pressures or aggressive aftermarket camshaft profiles.

This kit is manufactured using premium-grade valve spring wire to ensure long-term durability and resistance to fatigue. The dual cylindrical configuration provides enhanced harmonic damping compared to single-spring setups, ensuring stable valvetrain operation throughout the powerband.

• Engineered specifically for the Subaru FA20 engine architecture
• Dual cylindrical spring design for maximum valvetrain stability
• Higher seat pressure to prevent valve float at high RPM
• Compatible with both naturally aspirated and turbocharged FA20 variants
• Precision-manufactured for consistent spring rates and tolerances

This Supertech cam follower shim is designed for precision valvetrain adjustment, allowing for the exact lash settings required in performance engine builds. Manufactured to tight tolerances, these shims ensure reliable contact between the camshaft and follower, maintaining optimal valve timing and engine efficiency under high-stress conditions.

• Manufacturer Part Number: CF-SHIM-1.55
• Diameter: 8mm
• Thickness: 1.55mm
• Application: Designed for use with compatible 8mm diameter cam followers
• Purpose: Accurate valvetrain lash and clearance adjustment

Fits 1991-2000 Infiniti G20 models equipped with the SR20DET engine.

This HKS Outer Valve Spring Set is engineered to provide the critical tension and stability required for high-performance valvetrains. Specifically designed for the SR20DET platform, these outer springs help prevent valve float during high-RPM operation, ensuring consistent engine reliability and timing accuracy under heavy boost. These are an essential upgrade when moving to more aggressive camshaft profiles that demand higher seat pressures than factory components can provide.

• Optimized for high-RPM stability and precise valve control
• Designed to withstand the increased stresses of performance tuning
• Direct fitment for SR20DET cylinder heads
• Manufacturer Part Number: 22001-AN002

The HKS Step 2 Upgraded Valve Springs (22001-AN001) provide the essential valvetrain stability required for high-performance RB26DETT builds. These springs are specifically engineered to accommodate the increased lift of aggressive aftermarket camshafts and the extreme inertial forces generated during high-RPM operation.

By providing higher spring rates and increased seat pressure compared to factory components, these Step 2 springs effectively eliminate valve float and bounce. This ensures precise valve timing and protects the engine from potential valvetrain failure during competitive driving or track use. Manufactured to exacting tolerances, they are a direct-fit upgrade for enthusiasts pushing the limits of the RB26 platform.

• Manufacturer Part Number: 22001-AN001
• Engine Fitment: RB26DETT
• Series: Step 2
• Application: Optimized for high-lift camshaft profiles
• Function: Prevents high-RPM valve float and maintains timing accuracy

Engineered for high-performance valvetrain stability, the GSC Power-Division (GSC P-D) Conical Valve Spring Set is designed specifically for the Porsche 991 Turbo. This set (MPN 5094) utilizes a conical profile to reduce the mass of the top retainer and improve harmonic resistance, ensuring consistent valve control at higher RPM levels and increased boost pressures.

By shifting the resonant frequency of the spring outside the engine's primary operating range, these springs minimize valve float and provide the durability required for aggressive camshaft profiles or high-output builds. The reduced reciprocating mass allows for faster valve response and improved valvetrain longevity under stress.

• Fits Porsche 991 Turbo models
• Conical design reduces retainer weight and reciprocating mass
• Enhanced harmonic damping to prevent valve float at high RPM
• Precision-manufactured for consistent seat and open pressures
• Manufacturer Part Number: 5094

Fits 1992-2001 Acura Integra GS-R/Type R, 1999-2000 Honda Civic Si, and 1994-1997 Honda Civic del Sol VTEC with B-Series VTEC engines.

The GSC Power-Division Dual Valve Spring Set and Titanium Retainer kit (MPN 5049) is engineered to manage the increased valvetrain demands of high-performance B-Series engines. By providing higher seat pressure and more consistent spring rates, this kit prevents valve float during high-RPM operation and supports the aggressive lift profiles of aftermarket camshafts. The included titanium retainers significantly reduce reciprocating mass compared to factory steel units, improving throttle response and valvetrain stability.

• Dual-spring configuration for superior harmonic control at high engine speeds.
• Precision-machined titanium retainers for reduced mass and high strength.
• Specifically engineered for Honda B16 and B18 VTEC cylinder heads.
• Manufacturer Part Number: 5049

Fits select 1990-2006 Mitsubishi Lancer Evolution, Eclipse, Galant VR-4, Eagle Talon, and Plymouth Laser models (4G63T).

Engineered for high-performance valvetrain stability, this GSC Power-Division Beehive Valve Spring and Titanium Retainer kit (MPN 5041) is a critical upgrade for 4G63T builds pushing higher RPMs and increased boost. The beehive spring profile uses a smaller, lighter retainer which reduces reciprocating mass, allowing for better valve control and resistance to float compared to traditional cylindrical springs.

• Beehive Spring Design: Reduces valvetrain weight and improves harmonic resistance for high-RPM reliability.
• Titanium Retainers: CNC-machined from aerospace-grade titanium for maximum strength with minimal mass.
• Engine Compatibility: Specifically designed for the Mitsubishi 4G63T 16-valve platform.
• Part Number: 5041

This kit includes a full set of performance beehive valve springs and matching titanium retainers, providing the seat pressure required for aggressive camshaft profiles and high-manifold pressure environments.

Fits Toyota Supra 2JZ-GE and 2JZ-GTE engines.

This Supertech Dual Valve Spring set (SPR-TS1012-16) is engineered for high-performance Toyota 2JZ applications where increased RPM and aggressive lift profiles demand superior valvetrain control. The dual-spring design provides enhanced harmonic damping and significantly reduces the risk of valve float, ensuring the valves seat correctly even under extreme conditions.

• Designed specifically for the Toyota 2JZ-GE and 2JZ-GTE cylinder heads
• Dual-spring configuration for improved stability at high engine speeds
• Precision manufactured to maintain consistent seat pressure
• Set of 16 springs
• Manufacturer Part Number: SPR-TS1012-16

Fits select 1989-2002 Nissan 240SX, NX, Sentra, 200SX, and Infiniti G20 (SR20DE / SR20DET).

The Manley Valve Spring and Retainer Kit is engineered to stabilize your valvetrain for high-performance and racing environments. Designed to handle aggressive aftermarket camshaft profiles, this kit provides the necessary tension and fatigue resistance to maintain consistent valve control at engine speeds up to 10,000 RPM. By utilizing premium alloys and precision manufacturing, Manley ensures your SR20 engine remains reliable under extreme thermal and mechanical stress.

• Spring Material: Wound from high-tensile chrome-silicon alloy for exceptional fatigue resistance.
• Titanium Retainers: CNC machined from aerospace-grade titanium and heat-treated to exacting tolerances for maximum weight savings and durability.
• High-RPM Stability: Rated for use up to 10,000 RPM with compatible valvetrain components.
• Precision Fit: Engineered specifically for SR-series cylinder heads to take the guesswork out of valvetrain setup.
• Manufacturer Part Number: 26165

Note: This kit includes 16 valve springs and 16 titanium retainers. Valve locks are not included.

Fits 1988-1995 Toyota Celica All Trac and MR2 Turbo models equipped with the 3SGTE engine.

The GSC Power-Division valve spring and titanium retainer kit (MPN: 5745) is engineered for high-performance builds requiring superior valvetrain stability at high RPMs. This kit is specifically designed for compatibility with shimless and shim-over-bucket configurations. By utilizing lightweight titanium retainers, this set reduces reciprocating mass, helping to prevent valve float and ensuring consistent performance under high boost pressures.

• Precision-wound valve springs for optimized seat pressure and engine reliability
• Lightweight titanium retainers to reduce valvetrain inertia and improve response
• Specifically compatible with shimless and shim-over-bucket setups
• Direct fit for the Toyota 3SGTE cylinder head
• Manufacturer Part Number: 5745

This Supertech Single Valve Spring Kit is engineered specifically for the Toyota 2UZ-FE 4.7L V8 32-valve engine. Designed to provide consistent seat pressure and tension, this kit is an essential upgrade for maintaining valvetrain stability and preventing valve float during high-RPM operation or when installing more aggressive camshaft profiles.

• Fits Toyota 2UZ-FE V8 32V engines
• Single spring configuration optimized for reliable performance
• Provides necessary tension to ensure proper valve seating and timing
• Complete kit for a full engine refresh or valvetrain upgrade
• Manufacturer Part Number: SPRK-TU24

Fits Honda F20 and K20A2 engines.

The Supertech SPRK-H1021D Dual Valve Spring Kit is a critical upgrade for high-performance valvetrains, providing the seat pressure and spring rate necessary to maintain control at high RPM. Designed specifically for Honda F20 and K20A2 cylinder heads, this dual-spring configuration helps dampen harmonics and prevents valve float during aggressive camshaft lift or high-boost applications.

Engineered to withstand the rigors of track use and high-revving street builds, these springs replace factory components to ensure reliable engine operation and valvetrain stability. This kit is essential for anyone installing aftermarket cams or extending the factory redline.

• Specifically engineered for Honda F20 and K20A2 engine platforms
• Dual-spring design reduces harmonics and adds a layer of mechanical safety
• Provides increased seat pressure to prevent valve float at high RPM
• Precision manufactured for consistent rates and long-term durability
• Manufacturer Part Number: SPRK-H1021D

Ensure valvetrain stability and reliability in high-performance applications with the Supertech Dual Valve Spring Kit (SPRK-H100DR-BM-ST). This kit is engineered specifically for BMW M50, S50, M52, S52, and M54 inline-six engines to prevent valve float and bounce, which are common failure points when increasing RPM limits or installing aggressive aftermarket camshafts.

• Fits BMW M50, S50 (US), M52, S52 (US), and M54 series engines.
• Dual-spring configuration provides increased seat pressure and higher lift capacity over factory single springs.
• Manufactured from high-tensile chrome silicon steel for maximum fatigue resistance.
• Designed to maintain consistent pressure under extreme thermal loads and high-stress racing conditions.
• Essential upgrade for forced induction or high-RPM naturally aspirated builds.
• Manufacturer Part Number: SPRK-H100DR-BM-ST

Maintain precise valvetrain control at high RPM with this Supertech Dual Valve Spring Set. These springs are engineered to handle the increased lift and aggressive ramps of performance camshafts, providing the necessary tension to prevent valve float and harmonic resonance. By utilizing a dual-coil design, these springs effectively dampen vibrations that can lead to valvetrain failure in high-performance environments.

Each spring in this 16-piece set is manufactured to tight tolerances to ensure consistent seat pressure and spring rates across all cylinders. With a 13.2 lbs/mm rate and a 22mm coil bind height, these springs offer a robust solution for engine builders looking to optimize valvetrain stability and durability.

• Manufacturer Part Number: SPR-H1021D-16
• Quantity: Set of 16
• Outer Spring Diameter (OD/ID): 30.00mm / 21.80mm
• Inner Spring Diameter (OD/ID): 21.80mm / 16.20mm
• Spring Rate: 13.2 lbs/mm
• Coil Bind: 22.00mm

Fits 1998-2018 Dodge Ram 2500 and 3500 equipped with the 24V Cummins diesel engine.

Secure your valvetrain with the Fleece Performance valve spring and retainer kit. Engineered for heavy-duty use, these springs are manufactured from "super clean" high-tensile Chrome Silicon steel. Each spring undergoes a proprietary multi-step heat treating process specifically designed to minimize load loss and ensure consistent performance throughout the life of the engine. With a seat pressure of 105 lbs, these springs provide the necessary tension to prevent valve float in high-performance applications.

Complementing the high-tensile springs are retainers crafted from thru-hardened 4140 chrome moly steel. Finished with a black oxide coating for corrosion resistance, these retainers offer the structural integrity required to handle 195 lbs of open pressure at maximum lift. This kit (FPE-34797) is an essential upgrade for any Cummins owner looking to improve engine reliability and valvetrain stability.

• Manufacturer Part Number: FPE-34797
• Seat Pressure: 105 lbs
• Open Pressure: 195 lbs at maximum lift
• Spring Material: High-Tensile Chrome Silicon Steel
• Retainer Material: Thru-hardened 4140 Chrome Moly Steel
• Retainer Finish: Black Oxide

Fits select 1988-2001 Honda Civic, CRX, CR-V, del Sol, and Acura Integra models equipped with B18A, B18B, or B20B engines.

Brian Crower BC1020 dual valve springs are engineered to provide the increased seat pressure and spring rate required for high-performance builds. In modified B-series engines, factory springs can struggle with increased lift and higher RPM ranges, leading to valve float. These dual springs provide the necessary tension to ensure the valves close quickly and accurately, protecting your valvetrain while allowing for more aggressive camshaft profiles and higher redlines.

Manufactured from premium grade chrome silicon steel wire, these springs are designed for consistency and durability under extreme thermal and mechanical stress. This set is a critical upgrade for any B-series non-VTEC engine being pushed beyond its factory limits.

• Manufacturer Part Number: BC1020
• Spring Type: Dual Valve Springs
• Material: High-quality chrome silicon steel
• Designed for B18A, B18B, and B20B engine platforms
• Reduces valve float at high RPM