CP-Carrillo SC71422XA-4 Honda K20 X-Forged Piston and Ring Kit 87mm 12.5:1

The CP-Carrillo SC71422XA-4 is a complete forged piston and ring kit designed for Honda/Acura K20A and K20A2 engines. Featuring CP's proprietary X-style forging, these pistons deliver superior strength, reduced reciprocating weight, and outstanding durability for high-performance street and race applications.

Built to a 87.0mm (3.425 in.) bore with a 12.5:1 compression ratio, these domed pistons are engineered for naturally aspirated and nitrous applications that demand maximum power output. The dome features four valve reliefs for proper clearance with aggressive camshaft profiles and high-lift valvetrain components.

Key Specifications:

• Bore: 87.0mm (3.425 in.)
• Stroke: 86.0mm (Stock)
• Rod Length: 139.0mm
• Compression Height: 1.181 in.
• Dome Volume: 11.6cc
• Piston Style: Dome with four valve reliefs
• Compression Ratio: 12.5:1
• Advertised Weight: 300g
• Piston Material: High-strength forged aluminum (X-style forging)
• Piston Rings: Included
• Wrist Pins: Included at no additional cost

Key Features:

• X-style forging for additional strength, durability, and weight reduction
• Full radius dome design
• Deep valve relief depth accommodates high-lift camshafts
• Made for +1mm valve sizes
• Custom skirt cam and barrel design for optimized oil control
• Accumulator grooves for improved ring seal
• High-performance rings included
• Fully CNC-machined and balanced to ±1 gram
• Double pin oilers with force-fed oil ring
• Pick lock grooves for easy lock removal
• Pin fitting included
• Engineered using sophisticated computer modeling and 5-axis machining

CP-Carrillo pistons are manufactured using proprietary tooling, dedicated cutters, and state-of-the-art equipment. Each piston passes through a climate-controlled inspection department equipped with computerized electronic gauging to ensure precise fitment and consistent quality across every set.