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Wiseco Pistons Honda Acura RSX-S K20 K24 K20A K20Z 12.5:1 86.5mm K650M865AP

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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 # K650M865AP


Engine: K20A2 K20Z1
Compression Ratio: 12.5:1
Dome CC: 10.5
Pin Size: 22
Compression Height: 30
Rod Length: 5.472
Bore: 86.5
Bore Size: +0.020"
Standard Pin (Included): S550
Pin Locks (Included): W5590
Ring Part#: 8650XX

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