
PROX Cast Piston - Manufacturer Ref: 01.2018.A
A robust and precise replacement for Cross displacements, this PROX cast piston is made of aluminium with a domed head to suit the specific cylinder head settings of 65 cm³ engines. Part of the PROX range, it adheres to the standard compression configuration and is available in oversize "A", diameter Ø 43.45 mm, suitable for machined bores accordingly.
Designed for replacement fitting on compatible engines, it is particularly suitable for YAMAHA YZ 65 models (2024, 2025, 2026). Before fitting, check the cylinder bore and the condition of the rings, pin and clips: changing the rings and properly lubricating the skirt facilitates the running-in process and longevity. Choosing an oversize A piston requires appropriate machining adjustments if necessary.