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VERTEX Forged Piston Kit Oversize Cylinder – Manufacturer Ref. 24405B
Designed for enduro and motocross, this VERTEX forged piston kit is intended for setups equipped with an oversize cylinder. Machined from high-quality forged aluminum, it provides the mechanical strength essential for off-road demands while maintaining the specified bore dimensions.
Easy to install on compatible cylinder kits, this piston is aimed at mechanics looking for a reliable assembly part to rebuild a 250 cm3 engine with an 80 mm bore. It is particularly recommended for the listed motocross machines: YAMAHA YZ 250 F (2026), FANTIC XXF 250 (2026), and YAMAHA WR 250 F (2026).
Always check the condition of the cylinder, rings, and mounting surfaces before installation. Keeping the dimension and oversize letter (B) will ensure precise installation for optimal performance on the track or trail.
