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The CP Pistons kit for 2001–2005 Yamaha R6 is a set of four pistons specified at 13.75:1 compression with a 67.00mm bore and 44.50mm stroke, matching a 627cc configuration. Supplied as a complete four‑cylinder piston set, it restores correct displacement and compression characteristics for the R6 engine and supports a direct rebuild when combined with appropriate rings and hardware.
CP Pistons 01-05 Yamaha R6 13.75:1 67mm Bore x 44.5mm Stroke (627cc) Piston Kit - Set of 4
