Wiseco Pro-Lite Forged Piston Piston kitRef : WI00243A / 1118907001

WISECO Pro-Lite Forged Piston (manufacturer part number: W804M06640A) — designed for motocross enthusiasts seeking a robust and reliable OEM part. The Pro-Lite piston from Wiseco is built on decades of forging experience to provide a component ready to withstand the demands of a motocross engine, whether as a standard replacement or as part of an engine modification.

• Brand: WISECO
• Designation: WISECO Pro-Lite Forged Piston
• Diameter: Ø 66.350 mm (reference 66.34 mm)
• Oversize Letter: A
• Oversize: STD
• Piston Compression: Standard
• Material: Forged Aluminum
• Category: Motocross

Ideal for 250 cm3 engines, this piston fits several modern motocross models. Common compatibility with:

• YAMAHA YZ 250 (2026)
• FANTIC XX 250 (2026)
• YAMAHA YZ 250 (CG23) (2023)

Advantage of a forged part: better mechanical and structural integrity of the metal under high loads, useful on the track or during intensive riding. For secure installation, adhere to the bore and manufacturer tolerances, replace or check rings and pins, and entrust the installation to a qualified mechanic if necessary.