Wiseco 4-Stroke Forged Series - ø77.00mm Piston kitRef : WI00160A / 1122572003

WISECO 4T Forged Series Piston Kit - ø77.00mm (Manufacturer part number: W40151M07700C)

Designed for modifications and replacements on motocross machines, this WISECO 4T Forged Series piston kit is aimed at demanding riders seeking durability and precision assembly. The forged aluminum piston, oversize "C" (nominal diameter 77.00 mm — measured diameter 76.97 mm), is intended for high compression engines. Delivered as a kit to facilitate restoration during an engine overhaul.

• Usage: Motocross / competition
• Diameter: Ø 77.00 mm (C)
• Compression: High compression
• Material: Forged aluminum
• Delivery: Piston kit (rings provided as per reference)
• Manufacturer part number: W40151M07700C

Experienced riders will appreciate the finish and machining consistency that facilitate fitting to the bore. Ideal for those preparing an engine to regain performance out of corners or to handle high RPMs without surprises. Please check compatibility with your model before installation: this piston is notably suitable for several versions of YAMAHA YZ 250 F (CG34/CG39, 2016‑2018).