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 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