Carrillo SC71423XA-4 CP Pistons Honda K20A/A2 88mm +2.0mm X-Forged Piston & Ring Kit

The CP-Carrillo SC71423XA-4 is a complete forged piston and ring kit engineered for Honda K20A/A2 K-Series engines. Featuring an 88mm bore (+2.0mm oversize) and a 12.5:1 compression ratio, these X-style forged aluminum pistons are purpose-built for high-performance naturally aspirated and power-adder applications.

The X-style forging provides additional strength, durability, and weight savings over standard forgings, making this kit a popular choice for builders seeking maximum performance from the Honda K-Series platform. Each piston is fully CNC-machined and balanced to +/-1 gram for outstanding rotating assembly consistency.

Key Features:

• Bore: 88mm (+2.0mm oversize)
• Compression Ratio: 12.5:1
• Stroke: 86mm (Stock)
• Rod Length: 139mm
• Compression Height: 1.181 in. (29.997mm)
• Pin Diameter: 22mm
• Piston Style: Dome with four valve reliefs
• Piston Material: High-strength forged aluminum (X-style forging)
• Full radius dome design
• Custom skirt cam and barrel design
• Accumulator grooves for improved ring seal
• High-performance rings included
• Lightweight wrist pins included at no additional cost
• Double pin oilers with force-fed oil ring
• Pick lock grooves for easy lock removal
• Pin fitting included
• Deep valve relief depth accommodates high-lift camshafts
• Made for +1mm valve sizes

CP-Carrillo pistons are engineered using sophisticated computer modeling and produced with proprietary 5-axis CNC machining for optimum design precision. Each kit includes pistons, rings, wrist pins, and pin locks — everything needed for a complete rotating assembly upgrade.