



WISECO Forged Piston — manufacturer reference W641M05400C. Designed for modifications and replacements on Cross derivatives, this Wiseco forged aluminum piston is aimed at pistons that must withstand high RPMs and repeated cycles. A reputable manufacturer for nearly 50 years, Wiseco offers here a replacement part that conforms to factory specifications with an oversize for reboring.
The choice of a forged piston is common in motocross for its mechanical strength against the stresses of high acceleration, RPM changes, and high operating temperatures. This reference is suitable when the cylinder has been bored to +0.02 mm; always check the bore size before installation.
Compatibility (examples): SUZUKI RM 125 (1997, 1998, 1999 - 125 cm³). Installation is recommended by a professional or according to the manufacturer's procedure: checking piston/ring clearance, installing the clip, and proper break-in ensure long-lasting performance.