CP Pistons 87mm K-Series Pistons

Fits:

• 8th Gen Honda Civic Si
• 9th Gen Honda Civic Si
• Acura RSX
• 1st Gen Acura TSX
• 2nd Gen Acura TSX

CP pistons are compatible with oversized valves and high-lift camshafts. Part numbers ending in a "X" are on a X-style forging for additional strength, durability and weight reduction. The X-style has a full radius dome design, high-performance rings, and lightweight wrist pins.

CP Pistons represent the highest quality and is engineered for maximum power. Pistons can be ordered with gas ports, skirt coating, ceramic top coating, and stronger wrist pins if desired. Cometic head gaskets also available.

Features: 

• Deep valve reliefs
• Accommodate high-lift camshafts
• Larger valve reliefs for +1mm valve sizes
• Custom skirt cam-and-barrel design
• Accumulator grooves
• High-strength aluminum forgings
• High performance rings
• Fully CNC machined and balanced to +/- 1 gram
• Wrist pins included at no additional cost
• Double pin oilers force-fed from oil ring groove
• Pick lock grooves for easy lock removal
• Pin fitting included

Product Details: 

• Bore: 87mm
• Compression Ratio: 11.5:1
• Compression Ratio: 12.5:1
• Compression Ratio: 9.0:1
• Compression Ratio: 9.6:1
• Compression Ratio: 10.9:1