ProX Piston Kit for Yamaha WR250 and YZ250 (01.2314.D)

The PROX 01.2314.D Piston Kit is an OEM-replacement solution designed for Yamaha WR250 and YZ250 applications. Manufactured in Japan, this piston kit is built to provide dependable fitment, consistent performance, and long service life for powersports engine repairs and rebuilds. Its piston diameter is engineered for the specified application without listing direct product dimensions.
The piston is cast from a high-silicon-content aluminum alloy that meets or exceeds OEM specifications. This material helps support strength, durability, and reliable operation under demanding engine conditions. Each piston is CNC-machined to extremely close tolerances, helping promote accurate fitment and smooth interaction with the cylinder, rings, wrist pin, and related engine components.
The PROX 01.2314.D kit includes the piston, ring kit, wrist pin, and circlips needed for installation. By combining these key components in one application-specific package, it offers a practical option for replacing worn piston assemblies during routine maintenance, performance service, or complete engine rebuilding. Verify the motorcycle model and engine specifications before installation to ensure proper application.

Features:

• Manufactured in Japan for consistent production quality

• Designed as an OEM replacement for Yamaha WR250 and YZ250 applications

• Cast from high-silicon-content aluminum alloy that meets or exceeds OEM specifications

• CNC-machined to extremely close tolerances for accurate fitment

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

Ships from Parts Unlimited.