ProX Piston Kit for Yamaha YZ125, 53.94 mm (01.2224.A)

The PROX 01.2224.A Piston Kit is an OEM replacement solution designed for Yamaha YZ125 engines. Manufactured in Japan, this piston kit is built to support reliable engine performance, precise fitment, and dependable service life for motocross and off-road applications. The 53.94 mm piston is engineered as a direct replacement for compatible Yamaha YZ125 applications.
Cast from a high-silicon-content aluminum alloy, the PROX piston meets or exceeds OEM specifications for strength, dimensional stability, and thermal performance. The alloy construction helps the piston maintain consistent operation under demanding engine conditions, while the carefully controlled manufacturing process supports durability and dependable performance.
Each kit is CNC-machined to extremely close tolerances to help provide accurate fitment and smooth engine operation. The complete package includes the piston, ring kit, wrist pin, and circlips, providing the essential components needed for a thorough piston replacement. Verify application and installation requirements before fitting the PROX 01.2224.A kit to your Yamaha YZ125.

Features:

• Brand: PROX

• Part Number: 01.2224.A

• Application: OEM replacement piston kit for compatible Yamaha YZ125 engines

• Manufacturing Origin: Made in Japan

• Material: High-silicon-content aluminum alloy

• Machining: CNC-machined to extremely close tolerances

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

• Piston Size: 53.94 mm

Ships from Parts Unlimited.