ProX Piston Kit for Yamaha YZ125 and YZ125X, 53.95 mm (01.2232.A)

The PROX 01.2232.A Piston Kit is designed as an OEM replacement for select Yamaha YZ125 and YZ125X motorcycles. Manufactured in Japan, this replacement piston kit is built to support dependable engine performance and precise fitment during top-end service or engine rebuild applications. Verify model year and engine specifications before installation to ensure compatibility.
The piston is cast from a high-silicon-content aluminum alloy that meets or exceeds OEM specifications. This material helps provide the strength and durability required for demanding two-stroke engine operation while supporting consistent performance under varying temperatures and loads. The piston is CNC-machined to extremely close tolerances for accurate fitment and reliable operation when installed with the appropriate cylinder and components.
The PROX piston kit includes the piston, ring kit, wrist pin, and circlips needed for a complete piston replacement. Supplying these key components together helps simplify installation and ensures that the primary top-end parts are matched for the application. Follow the motorcycle manufacturer’s service procedures and PROX installation recommendations during assembly, including all required inspection, clearance, lubrication, and break-in steps.
Feature: Manufactured in Japan for consistent quality and reliable replacement performance.
Feature: OEM replacement design for select Yamaha YZ125 and YZ125X applications.
Feature: Cast from high-silicon-content aluminum alloy meeting or exceeding OEM specifications.
Feature: CNC-machined to extremely close tolerances for precise fitment.
Feature: Kit includes piston, ring kit, wrist pin, and circlips.

Features:

• Manufactured in Japan for consistent quality and reliable replacement performance.

• OEM replacement design for select Yamaha YZ125 and YZ125X applications.

• Cast from high-silicon-content aluminum alloy meeting or exceeding OEM specifications.

• CNC-machined to extremely close tolerances for precise fitment.

• Kit includes piston, ring kit, wrist pin, and circlips.

Ships from Parts Unlimited.