ProX Piston Kit for Yamaha YZ125 and YZ125X, 53.96 mm (01.2225.B)

The PROX Piston Kit 01.2225.B is designed as an OEM replacement for select Yamaha YZ125 and YZ125X applications. Manufactured in Japan, this piston kit is built for dependable fitment and consistent performance in demanding two-stroke engines. The 53.96 mm piston is engineered to meet or exceed OEM specifications, making it a practical choice for engine rebuilding, maintenance, or replacement.
Cast from a high-silicon-content aluminum alloy, the PROX piston offers strength, durability, and reliable resistance to the heat and operating stresses generated by high-performance motorcycle engines. Each piston is CNC-machined to extremely close tolerances to support accurate installation, proper cylinder fit, and consistent engine operation. The precision-focused manufacturing process helps provide the quality expected from a trusted replacement component.
This complete PROX kit includes the piston, piston ring kit, wrist pin, and circlips, providing the essential components needed for installation. Verify the motorcycle model, year, cylinder specifications, and required piston clearance before ordering to ensure proper compatibility. With its OEM-focused design and complete component package, the PROX 01.2225.B piston kit is a reliable solution for Yamaha YZ125 and YZ125X engine service.

Features:

• Brand: PROX

• Part Number: 01.2225.B

• Application: OEM replacement for select Yamaha YZ125 and YZ125X models

• Manufacturing: Made in Japan

• Material: High-silicon-content aluminum alloy

• Machining: CNC-machined to extremely close tolerances

• Specification: Meets or exceeds OEM specifications

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

Ships from Parts Unlimited.