Wiseco Pro-Lite Forged Piston kitRef : WI00083A / 1118907002

WISECO Pro-Lite Forged Piston (manufacturer part number: W804M06640B) designed for motocross engines where lightness and robustness are sought. This forged aluminum piston benefits from WISECO's expertise, recognized for nearly 50 years for its parts intended for the high demands of off-road motorcycles. Ideal for an original replacement or engine preparation, it offers a design suited to the regimes and thermomechanical shocks of the terrain.

• Type: Pro-Lite Forged Piston
• Material: Aluminum
• Diameter: Ø 66.35 mm (reference 66.360 mm)
• Oversize: +0.01 (letter B)
• Compression: Standard

The Pro-Lite design prioritizes a reduced piston mass to limit moving masses and promote a more responsive engine without compromising durability. Forged for a denser grain structure than a cast piston, it is suitable for the repeated stresses encountered in motocross (jumps, strong accelerations, high revs).

Main compatibilities: YAMAHA YZ 250 (2026), FANTIC XX 250 (2026), YAMAHA YZ 250 (CG23, 2023). During installation, respect the piston-ring clearance and the manufacturer's recommendations for break-in and balancing to ensure longevity and reliability.