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Wiseco Pistons Honda Acura RSX-S K20 K24 K20Z 87mm 11.0:1-12.8:1 K634M87

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World renowned for their race winning pistons, Wiseco uses their diverse experience in building high performance engines for Formula 1, Indy Racing League, and NHRA Pro Stock to design and manufacture the highest technology sport compact pistons available. Every set of Wiseco sport compact pistons are made from dedicated in-house forgings to produce a light weight piston with superior strength and optimal design. As a multivalve piston technology leader, Wiseco pistons feature specially designed valve pockets, complex dome and crown shapes, stainless steel gas nitride rings and optimized skirt profiles. All Wiseco sport compact pistons also come standard with their proprietary ArmorGlide skirt coating material for reduced friction, freeing up additional horsepower.

Wiseco pistons are sold as a full set of four (4) pistons and include corresponding rings, pins and clips.

Part #K634M87 

Engine: K20 / K24
Compression Ratio: 11.0 (K20) - 12.8:1 (K24)
Face Type: Dome
Dome CC: 5
Gasket Thickness: 0.025
Head CC: 50.5
Gram Weight: 303
Pin Size: 22
Compression Height: 30
Rod Length: 5.472 / 5.894
Stroke: 3.386 / 3.897
Bore: 87
Bore Size: STD
Standard Pin (Included): S618
Pin Locks (Included): W5590
Ring Part#: 8700XX

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