PROX 77mm FORGED PISTON KIT A, YAMAHA YZ250F 19-25, FX 20-25, WR250F 20-25

PROX PISTON KIT

Fantic
XEF 250 2021-2023
XXF 250 2022-2023

Yamaha
WR 250F 2020-2025
YZ 250F 2019-2025
YZ 250FX 2020-2025

Bore: 77.00 (A.76.95mm)

Compression Ratio - 13.8:1

PROX 01.2439.A

Majority of our listings are for a direct replacement for your original part.

Our parts are made of quality and are designed to meet or exceed the original OEM Standards.

Our products are often a cost effective alternative to genuine OEM Parts.

Please note: the models of bike we state in our listings are for general guidance only. Please make sure this item will fit your bike before purchasing. Also, we cannot guarantee fitment to any non-UK models.