Fits 2004-2012 Subaru Impreza WRX STI, including Limited and Special Edition models equipped with the EJ257 engine.

This high-performance forged piston and ring set from CP is engineered to withstand the increased cylinder pressures and thermal loads associated with high-boost Subaru EJ257 builds. Precision-machined for a +0.25mm oversize bore (99.75mm), these pistons provide a reliable 8.2:1 compression ratio, making them an ideal choice for engine builders seeking durability and consistent performance in aggressive street or track applications.

• Manufacturer Part Number: SC7422-4
• Bore Diameter: 99.75mm (+0.25mm Oversize)
• Compression Ratio: 8.2:1
• Engine Compatibility: Subaru EJ257 2.5L Turbo
• Included: Forged pistons and matching high-strength piston rings

Fits 2004-2012 Subaru Impreza WRX STI models equipped with the EJ257 engine.

This CP Pistons forged piston and ring set is engineered to withstand the extreme cylinder pressures and thermal loads of the turbocharged EJ257. Designed for standard 99.5mm bore blocks, this set maintains an 8.2:1 compression ratio, providing a robust foundation for high-boost applications and performance engine rebuilds. Each piston is precision-machined to ensure tight tolerances and optimal oil control, while the included ring set provides superior sealing and heat dissipation.

• Manufacturer Part Number: SC7420-4
• Bore Size: 99.5mm (Standard)
• Compression Ratio: 8.2:1
• Engine Application: Subaru EJ257 2.5L Turbo
• Included Components: Forged pistons and matching piston ring set

This CP Pistons Piston and Ring Set (SC7408-4) is engineered specifically for the Subaru BRZ (FA20), providing a precision-matched solution for high-performance engine builds. Designed to withstand the increased thermal and mechanical stresses of modified naturally aspirated or forced induction setups, these pistons feature an 86.5mm bore and a 10.5:1 compression ratio.

• Vehicle Fitment: Subaru BRZ (FA20)
• Bore Diameter: 86.5mm
• Compression Ratio: 10.5:1
• Manufacturer Part Number: SC7408-4
• Included Components: Four (4) pistons, high-strength wrist pins, and matching high-performance ring sets

Each piston is CNC-machined from high-strength alloys to exact tolerances, ensuring consistent weights across the set for optimal engine balance and reduced vibration at high RPM. Whether you are performing a thorough rebuild or a performance upgrade, this kit delivers the reliability and combustion chamber sealing required for the FA20 platform.

Designed for the Subaru BRZ FA20 engine, this CP Pistons Piston & Ring Set (SC7405-4) provides the structural integrity required for high-performance builds. This set features a 10.0:1 compression ratio, specifically engineered to offer a more resilient setup compared to factory ratios, making it a preferred choice for forced induction or high-output applications.

• Manufacturer: CP Pistons
• MPN: SC7405-4
• Fitment: Subaru BRZ (FA20 engine)
• Bore Size: 86mm
• Compression Ratio: 10.0:1
• Set Count: Complete set of 4 pistons
• Included Hardware: High-strength wrist pins, locks, and premium piston rings

Each piston is forged for maximum strength-to-weight ratio and machined to tight tolerances to ensure consistent balancing across the rotating assembly. This kit is a direct replacement for stock pistons when using factory-sized 86mm bores.

Fits 2002-2005 Subaru Impreza WRX and 2005 Saab 9-2X Aero (EJ20).

This CP Piston and Ring Set is engineered for high-performance builds using the Subaru EJ20 engine platform. Designed to handle increased cylinder pressures and thermal loads, these pistons are a critical upgrade for enthusiasts seeking to reinforce their rotating assembly. This set features a 92.5mm bore, which is a 0.5mm oversize from the factory specification, providing a fresh cylinder wall surface for optimal ring sealing during rebuilds.

• Manufacturer Part Number: SC7400-4
• Bore Diameter: 92.5mm (+0.5mm oversize)
• Compression Ratio: 8.5:1
• Includes custom-tailored piston rings for precise oil control and compression
• Specifically engineered for the EJ20 engine architecture found in the Subaru WRX and Saab 9-2X Aero

Engineered for high-output Nissan VR38DETT engines, this CP Carrillo Piston and Ring Set provides the structural integrity and precision required for performance R35 GT-R builds. These forged pistons are designed to withstand the extreme cylinder pressures and thermal loads common in high-boost forced induction applications.

This standard bore (95.5mm) set maintains a 9.0:1 compression ratio, providing a robust foundation for tuners looking to balance power delivery and reliability. Each piston is engineered with optimized skirt profiles to reduce friction and noise while maintaining a stable oil film, ensuring longevity under racing conditions.

• Fitment: Nissan VR38DETT (R35 GT-R)
• Manufacturer Part Number: SC7353-6
• Bore Diameter: 95.5mm (Standard Bore)
• Compression Ratio: 9.0:1
• Material: High-strength forged aluminum alloy
• Includes: High-performance piston rings, wrist pins, and wire locks

Fits 1989-1998 Nissan 240SX Base, LE, SE, and XE models equipped with an SR20DE Turbo engine conversion.

Engineered specifically for high-stress forced induction environments, this CP Pistons Piston and Ring Set provides the structural integrity necessary for boosted SR20DE builds. These forged pistons are machined to precise tolerances to handle increased cylinder pressures while maintaining optimal thermal expansion and ring seat sealing. This set is designed for blocks bored to 87mm, providing a 1.0mm oversize and a 8.5:1 compression ratio ideal for turbo applications.

• Manufacturer Part Number: SC7328-4
• Bore Diameter: 87mm (+1.0mm Oversize)
• Compression Ratio: 8.5:1
• Engine Fitment: Nissan SR20DE with Turbocharger
• Kit Contents: Forged pistons, high-performance ring set, wrist pins, and locks

Engineered for high-performance forced induction builds, this CP Pistons Piston & Ring Set is designed specifically for the Nissan SR20DE engine equipped with a turbocharger. These forged pistons provide the critical strength and heat dissipation required to handle increased cylinder pressures while maintaining the precise tolerances necessary for reliable performance.

• Fits Nissan SR20DE (Turbocharged)
• Bore Size: 86.5mm (+0.5mm Oversize)
• Compression Ratio: 8.5:1
• Includes high-performance piston ring set
• Forged construction for superior strength-to-weight ratio
• Manufacturer Part Number: SC7327PVD

Fits Nissan SR20VE and SR20VET engines.

This CP Piston & Ring Set is engineered for high-performance builds requiring increased strength and precise tolerances. Designed specifically for the Nissan SR20VE and SR20VET platforms, these pistons feature an 86.5mm bore (+0.5mm oversize) and a 9.0:1 compression ratio. This configuration is an excellent choice for forced induction applications where reliability and knock resistance are paramount during high-load operation.

• Manufacturer Part Number: SC7325V-4
• Bore Size: 86.5mm (+0.5mm)
• Compression Ratio: 9.0:1
• Engine Fitment: Nissan SR20VE / SR20VET
• Included: High-strength pistons and matching piston ring set

Fits 1989-1998 Nissan 240SX models equipped with SR20DE or SR20DET engine swaps.

This CP Pistons Piston and Ring Set (MPN SC73241-4) is engineered for the high-thermal and mechanical demands of the Nissan SR20 platform. Precision-forged to a standard 86mm bore, these pistons maintain an 8.5:1 compression ratio, making them a preferred choice for turbocharged DET builds or high-performance DE builds requiring a durable rotating assembly capable of handling increased cylinder pressures.

• Bore Diameter: 86.00mm (Standard Size)
• Compression Ratio: 8.5:1
• Engine Compatibility: Nissan SR20DE / SR20DET
• Manufacturer Part Number: SC73241-4
• Construction: High-strength forged aluminum alloy
• Includes: Full set of pistons, high-performance rings, wrist pins, and locks

Fits 1989-1998 Nissan 240SX (SR20DE/DET engines).

Engineered for the rigorous demands of high-performance SR20 engines, this CP Piston & Ring Set (SC7324-4) provides the precision and durability required for reliable power. These pistons feature an 86mm standard bore and a 9.0:1 compression ratio, making them a preferred choice for forced induction or high-output builds where combustion chamber integrity is critical. Each piston is manufactured to exacting tolerances to ensure optimal thermal expansion control and superior ring sealing.

• Manufacturer Part Number: SC7324-4
• Bore Size: 86mm (STD)
• Compression Ratio: 9.0:1
• Engine Series: Nissan SR20DE / SR20DET
• Set Includes: High-strength pistons, precision-matched ring sets, and wrist pins

Fits Nissan RB26DETT engines.

This CP Pistons and Ring Set is engineered for high-performance engine builds on the Nissan RB26DETT platform. These forged pistons are designed to manage the increased thermal loads and cylinder pressures associated with forced induction. With an 87.0mm bore (+1.0mm oversize) and a 9.0:1 compression ratio, this set provides the strength and precise tolerances required for a reliable bottom-end rebuild.

• Engine Application: Nissan RB26DETT
• Bore Size: 87.0mm (+1.0mm Oversize)
• Compression Ratio: 9.0:1
• Manufacturer Part Number: SC7314-6
• Included: Set of 6 pistons and matching piston rings

Engineered for high-performance builds, the CP Piston & Ring Set for the Nissan RB26DETT provides the structural integrity required for increased boost and power levels. These forged pistons are designed to replace factory components, offering improved thermal management and durability under extreme combustion pressures.

• Bore: 86.5mm (+0.5mm oversize)
• Compression Ratio: 9.0:1
• Engine Compatibility: Nissan RB26DETT
• Quantity: Set of 6
• Manufacturer Part Number: SC7313-6

This complete kit includes six forged pistons, a high-performance piston ring set, heavy-duty wrist pins, and wire locks to ensure a precise and secure fit during your engine assembly.

This CP Pistons forged piston and ring set is engineered for high-performance Nissan RB25DET 6-cylinder engines. Designed to withstand the increased cylinder pressures of turbocharged applications, these pistons provide the strength and thermal stability required for both street and track builds.

• Fits Nissan RB25DET 6-cylinder engines
• Bore Diameter: 86.50mm (+0.5mm oversize)
• Compression Ratio: 9.0:1
• Includes high-quality piston rings
• Manufacturer Part Number: SC7305-6
• Sold as a complete set of 6 pistons

Each piston is precision-machined to ensure tight tolerances and optimal ring seal, helping to maximize power output and engine longevity in your RB25DET build.

Designed for high-performance builds, this CP Pistons and Ring Set (SC7297-6) is engineered specifically for the Nissan RB25DET NEO engine. This set features a +0.5mm oversize bore to restore cylinder geometry or increase displacement while maintaining a 9.0:1 compression ratio ideal for forced induction applications.

• Fits Nissan RB25DET NEO engines
• Bore: 86.5mm (+0.5mm oversize)
• Compression Ratio: 9.0:1
• Includes complete set of rings
• Manufacturer Part Number: SC7297-6
• Quantity: Set of 6 pistons and rings

Each piston is manufactured with precision tolerances to handle increased cylinder pressures, providing the durability required for modified RB-series engines. This kit includes the matching high-performance rings required for a complete bottom-end refresh or build.

Fits 2008-2014 Mitsubishi Lancer Evolution GSR models equipped with the 4B11 engine.

This CP Pistons Piston & Ring Set is engineered for high-performance applications on the Mitsubishi 4B11 platform. Manufactured to precise tolerances from high-strength forged aluminum, these pistons provide the durability required for increased cylinder pressures and elevated power levels. This specific set features an 86.5mm bore, providing a +0.5mm oversize for engine blocks requiring a fresh bore and hone to restore cylinder wall integrity.

• Manufacturer Part Number: SC7221-4
• Bore Diameter: 86.5mm (+0.5mm oversize)
• Engine: Mitsubishi 4B11 (Evolution X)
• Includes: High-performance piston rings, wrist pins, and locks
• Material: Forged aluminum alloy

Fits 2008-2014 Mitsubishi Lancer Evolution GSR (4B11).

This CP Pistons Piston & Ring set is engineered to handle the high cylinder pressures and thermal loads of the turbocharged 4B11 engine. These pistons are manufactured with precision tolerances to ensure optimal ring seal and durability for both high-performance street and track applications. This kit provides a drop-in solution for standard bore blocks requiring the strength of forged internals.

• Bore Size: 86mm
• Size: Standard
• Engine Compatibility: Mitsubishi 2.0L 4B11
• Manufacturer Part Number: SC7220-4

Fitment:

Fits all 2000-2009 Honda S2000 Base and CR models equipped with F20C or F22C engines.

This CP Pistons Piston & Ring Set is engineered for the high-performance demands of the Honda S2000's naturally aspirated powerplants. Designed to meet or exceed the rigorous tolerances required for high-RPM operation, these pistons are a direct replacement for standard size (STD) factory units. Each set includes precision-matched rings to ensure optimal cylinder sealing and oil control in both street and track environments.

• Bore Diameter: 87mm
• Size: Standard (STD)
• Compression Ratio: 11.0:1 (F20C application)
• Includes high-performance piston ring set
• Manufacturer Part Number: SC7160-4

Fits Honda and Acura K24 engines utilizing K20A or K20A2 cylinder heads.

This CP Pistons Forged Piston and Ring Set is engineered for high-performance K-Series "Frankenstein" engine builds. Designed specifically for the K24 block paired with a K20A/A2 head, these pistons provide the necessary valve relief and dome profile to achieve a 12.0:1 compression ratio. Manufactured from high-strength forged aluminum, these pistons are built to withstand the increased cylinder pressures and thermal loads of high-RPM naturally aspirated or forced induction applications.

Each piston is precision CNC-machined to ensure tight tolerances and optimal ring groove geometry, promoting superior oil control and cylinder sealing. The 87.50mm bore size (+0.50mm overbore) requires professional cylinder boring and honing to ensure proper piston-to-wall clearance.

• Manufacturer Part Number: SC71471XA-4
• Bore Size: 87.50mm (+.50mm Overbore)
• Compression Ratio: 12.0:1
• Engine Compatibility: K24 Block with K20A/K20A2 Head
• Material: Forged Aluminum
• Includes: High-performance piston rings, wrist pins, and locks

Fits 2000-2003 Honda S2000 Base (F20C).

This CP Pistons and ring set is designed to meet the rigorous demands of the high-revving Honda F20C engine. Engineered for precision and durability, this set maintains a 10.0:1 compression ratio and is sized for standard 87mm bores. It provides the thermal stability and strength necessary for high-performance applications, whether you are refreshing a high-mileage engine or building for forced induction or competitive naturally aspirated use.

• Engine Fitment: Honda F20C
• Bore Diameter: 87mm
• Piston Size: STD (Standard)
• Compression Ratio: 10.0:1
• Manufacturer Part Number: SC7065-4
• Includes: Full set of pistons and high-performance piston rings

This CP Pistons forged piston and ring set is engineered for Acura and Honda K24 engines utilizing K20A, K20A2, or K20A3 cylinder heads. Designed for high-performance builds, these pistons feature an 87.5mm bore size (+0.5mm overbore) and a 10.0:1 compression ratio, providing a reliable foundation for performance-oriented K-Series applications.

Forged from high-strength aluminum alloy, these pistons are built to withstand the increased thermal and mechanical loads of high-RPM operation. Each set includes precision-engineered rings to ensure optimal oil control and compression sealing within the cylinder walls.

• Engine Fitment: Honda/Acura K24 with K20A/A2/A3 Cylinder Head
• Bore Diameter: 87.5mm (+0.5mm Overbore)
• Compression Ratio: 10.0:1
• Material: Forged Aluminum Alloy
• Quantity: Complete Set of 4
• Includes: Pistons, piston rings, wrist pins, and locks
• Manufacturer Part Number: SC7047-4

This CP Pistons and Ring Set is engineered specifically for Honda and Acura K24 engines utilizing K20A, K20A2, or K20A3 cylinder heads—the foundation for the high-output "Frankenstein" K-series build. These forged pistons are designed to handle the increased mechanical stresses of high-RPM operation while providing the thermal stability needed for performance street and track use.

Each piston is precision-machined to an 87.0mm standard bore, maintaining a 10.0:1 compression ratio that balances performance gains with daily drivability. This set replaces worn factory internals with a high-strength forged alternative, providing a reliable bottom-end for naturally aspirated or mild forced-induction setups. The kit includes all necessary rings and wrist pins for a complete installation.

• Manufacturer Part Number: SC7046-4
• Bore Diameter: 87.0mm (Standard Size)
• Compression Ratio: 10.0:1
• Engine Configuration: K24 Block with K20A/A2/A3 Head
• Material: High-strength forged aluminum
• Includes: 4 Pistons, matching ring sets, and wrist pins

Fits 2002-2006 Acura RSX Base and 2002-2004 Acura RSX Type-S models equipped with K20A, K20A2, or K20A3 engines.

This CP Pistons Piston & Ring Set is engineered for high-performance Honda K-series engine builds. Designed to withstand the increased thermal and mechanical stresses of high-RPM and forced induction applications, these forged pistons provide superior strength compared to factory cast components. The 87.5mm bore size represents a +1.5mm oversize, requiring block boring and honing for installation.

Each set includes precision-engineered pistons and a matching high-performance ring set to ensure a consistent seal and optimal oil control. Whether you are refreshing a worn K20 block or building a high-horsepower street or track engine, these pistons provide the reliability and tight tolerances necessary for professional engine assembly.

• Manufacturer Part Number: SC70458-4
• Engine Compatibility: Acura/Honda K20A, K20A2, K20A3
• Bore Diameter: 87.5mm
• Oversize: +1.5mm
• Included: Pistons and high-performance ring set

Maintain peak combustion seal and oil control with this genuine CP-Carrillo replacement piston ring. Specifically engineered for use with CP SC7338 and SC7381 forged pistons, this ring (RS165A-3780-0) is designed to meet the rigorous demands of high-performance and high-output engine builds.

Manufactured to exacting tolerances, these rings ensure a precise fit within the cylinder bore, helping to prevent blow-by and maintain consistent compression in high-heat environments. Whether performing a routine engine refresh or a complete build, using the correct ring specified for your piston part number is critical for drivetrain longevity and power efficiency.

• Direct replacement ring for CP-Carrillo SC7338 and SC7381 pistons
• Designed for high-performance and custom-built engines
• Ensures optimal ring-to-wall contact and heat dissipation
• Manufactured by CP-Carrillo to strict quality standards
• Manufacturer Part Number: RS165A-3780-0

Maintain peak engine performance and combustion seal with this CP-Carrillo replacement piston ring set. Specifically engineered for use with CP SC7421 forged pistons, these rings are manufactured to the strict tolerances required for high-output and custom engine builds where cylinder pressure and heat management are critical.

• Designed exclusively for compatibility with CP-Carrillo SC7421 piston profiles.
• Engineered to provide superior oil control and compression sealing in high-performance applications.
• Precision-machined from high-strength materials for durability under extreme engine loads.
• Ideal for engine refreshes or rebuilds using existing SC7421 forged pistons.
• Manufacturer Part Number: RS1658-3937-0

Maintain optimal cylinder sealing and compression with this CP-Carrillo replacement piston ring set. Specifically engineered for high-performance forged CP pistons, these rings are designed to withstand the increased thermal and mechanical loads of high-output and custom-built engines.

This ring set ensures precise fitment and superior ring land seating, making it a critical component for engine builders requiring reliable oil control and combustion sealing in performance applications.

• Manufacturer Part Number: RS1658-3927-0
• Fits CP Piston Part Numbers: SC7416, SC7422, SC7426, SC7434, SC7438, and SC7442
• High-grade materials for durability in high-horsepower builds
• Precision-engineered for maximum combustion pressure retention

Maintain peak engine compression and superior oil control with this CP-Carrillo replacement piston ring set, engineered specifically for use with SC7420 forged pistons. Designed for high-output and custom engine builds, these rings are manufactured to the exacting tolerances required for high-RPM and high-pressure environments.

Using the correct ring set is critical for ensuring a proper cylinder seal and preventing blow-by during engine operation. These rings are constructed from high-grade materials to provide the thermal stability and wear resistance necessary for racing and performance street applications. This set is intended for maintenance, refreshes, or new builds where SC7420 pistons are utilized.

• Manufacturer Part Number: RS1658-3917-0
• Compatibility: Specifically for CP-Carrillo SC7420 pistons
• Application: High-performance engine rebuilds and maintenance
• Precision-engineered ring tension for optimal sealing and reduced friction

Maintain peak engine performance and compression with this genuine CP-Carrillo replacement piston ring. Specifically engineered for a precise fit on select CP performance pistons, this ring (MPN RS1610-3406-0) is essential for ensuring a proper cylinder seal and efficient oil control in high-stress racing or street applications.

Constructed to the exact tolerances required for high-performance rotating assemblies, this replacement ring provides the reliable thermal transfer and blow-by resistance needed for engine longevity. It is intended as a direct replacement part for specific CP-Carrillo piston sets when rings require service or replacement during an engine refresh.

• Manufacturer Part Number: RS1610-3406-0
• Engineered for high-performance cylinder sealing and oil control
• Direct replacement for CP Piston Part Numbers: SC7310, SC7327, SC7325, SC7320, SC7460, SC7450, SC7452
• Manufactured to strict tolerances for consistent tension and fit

This CP Pistons Turbo Ring Set is engineered specifically for use with SC7700 series piston kits, featuring a 3.307-inch bore configuration. Designed to withstand the intense thermal and mechanical stresses of high-boost applications, this set provides the precise sealing and oil control required for high-performance engine builds.

The set utilizes a PVD (Physical Vapor Deposition) coating on the top ring to significantly reduce friction and enhance wear resistance under extreme combustion pressures. Each ring is precision-machined to strict tolerances to ensure consistent tension and a reliable seal throughout the service life of the engine.

• Manufacturer Part Number: CPT-3307PVD
• Compatible Pistons: CP Carrillo SC7700 series
• Bore Size: 3.307 in
• Top Ring: 1.2mm thickness
• Second Ring: 1.2mm thickness
• Oil Ring: 2.0mm thickness
• Finish: PVD Coated for reduced friction and high durability

Fits BMW and Toyota vehicles equipped with B48 and B58 engines. These CP Turbo Rings are engineered to handle the increased cylinder pressures and thermal loads found in high-performance turbocharged applications. Specifically designed for a 3.2283in bore and optimized for an 11.0:1 compression ratio, these rings ensure a superior seal for consistent power delivery and oil control.

• Engineered for BMW and Toyota B48 and B58 engine platforms
• Designed specifically for turbo/forced induction engine builds
• Precision-engineered for 3.2283in (82mm) bore diameter
• Optimized for 11.0:1 static compression ratio
• Durable construction to withstand high boost and extreme temperatures
• Manufacturer Part Number: CPT-3228PVD