ProX Piston Kit for Yamaha YZ85, 47.45 mm (01.2114.B)

The PROX 01.2114.B Piston Kit is designed as an OEM replacement for Yamaha YZ85 applications. Manufactured in Japan, this piston kit is engineered for dependable fit, consistent performance, and long-term durability in demanding off-road riding conditions. Its 47.45 mm piston size supports accurate application matching without compromising the precision required for proper engine operation.
Cast from a high-silicon-content aluminum alloy, the PROX piston meets or exceeds OEM specifications for strength, thermal stability, and wear resistance. The piston is CNC-machined to extremely close tolerances to help promote proper cylinder fit, smooth movement, and reliable combustion performance. This precision-focused manufacturing process makes the kit a practical choice for engine rebuilding and routine top-end service.
The PROX 01.2114.B kit includes the piston, ring kit, wrist pin, and circlips needed for installation. Each component is selected to work together as a complete replacement solution, helping simplify maintenance and support consistent results. Verify vehicle compatibility and application details before installation to ensure the correct fit for your Yamaha YZ85.

Features:

• Brand: PROX

• Part Number: 01.2114.B

• Application: Yamaha YZ85

• Piston Size: 47.45 mm

• Manufacturing Origin: Made in Japan

• Construction: High-silicon-content aluminum alloy

• Machining: CNC-machined to extremely close tolerances

• OEM Replacement: Designed to meet or exceed OEM specifications

• Kit Contents: Piston, ring kit, wrist pin, and circlips

Ships from Parts Unlimited.