Wiseco Forged Pistons Honda/Acura K20 K20A3

Wiseco Pistons for the Honda/Acura K20 engine. Wiseco makes several K-Series Pistons and we try to keep several of the most popular part numbers in stock. Just select which part number best fits your application from the list below, and include that part number in the paypal notes section of your payment.

Have a question about bore size or compression ratio?
Want an expected ship date on a specific part number?
Email us now at Sales@RealStreetPerformance.com

Whether you damaged your stock internals, you are building an all out race engine, or you are just looking to upgrade your stock bottom end. Wiseco is one of the most trusted and affordable options on the market period.

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Wiseco Piston Part Numbers

RSX-S 2002-06 K20 (w/ Deeper Larger Valve Pockets)

Part #	Application	Bore Size	Compression Ratio
K568M86	K20	86.00mm (Standard Bore)	9.0:1
K568M865	K20	86.50mm (+.020" Overbore)	9.0:1
K568M87	K20	87.00mm (+.040" Overbore)	9.0:1
K568M875	K20	87.50mm (+.060" Overbore)	9.0:1
K568M88	K20	88.00mm (+.080" Overbore)	9.0:1
K568M885	K20	88.50mm (+.100" Overbore)	9.0:1
K568M89	K20	89.00mm (+.120" Overbore)	9.0:1
K631M86	K20	86.00mm (Standard Bore)	9.8:1
K631M865	K20	86.50mm (+.020" Overbore)	9.8:1
K631M87	K20	87.00mm (+.040" Overbore)	9.8:1
K631M875	K20	87.50mm (+.060" Overbore)	9.8:1
K634M87	K20	87.00mm (+.040" Overbore)	11.0:1
K634M875	K20	87.50mm (+.060" Overbore)	11.0:1
K634M89	K20	89.00mm (+.120" Overbore)	11.0:1
K634M895	K20	89.50mm (+.140" Overbore)	11.0:1
K573M86	K20	86.00mm (Standard Bore)	11.7:1
K573M865	K20	86.50mm (+.020" Overbore)	11.7:1
K573M87	K20	87.00mm (+.040" Overbore)	11.7:1
K573M875	K20	87.50mm (+.060" Overbore)	11.7:1
K573M88	K20	88.00mm (+.080" Overbore)	11.7:1
K573M885	K20	88.50mm (+.100" Overbore)	11.7:1
K573M89	K20	89.00mm (+.120" Overbore)	11.7:1