WISECO Piston Kit with Gaskets - 68.00 mm - Yamaha WR/YZ 250 PK1563

A worn or damaged top-end forces catastrophic engine failure and sidelined race time. The WISECO Piston Kit delivers OEM-quality reliability with precision-engineered components matched specifically to your Yamaha WR/YZ 250, ensuring consistent compression, ring seal integrity, and peak performance lap after lap. This complete kit eliminates the guesswork of sourcing individual components—everything you need for a fresh, high-revving top-end arrives ready to install.

What's Included:

• Pistons (matched set)
• Piston rings
• Wrist pins
• Circlips
• Top-end gasket kit
• Complete one engine

Technical Specifications:

• Bore diameter: 68.00 mm
• Manufacturer: WISECO
• Part number: PK1563
• Application: Yamaha WR250, YZ250
• Ring type: Non-interchangeable (CD/LC)
• Installation: Bolt-on gaskets
• Cylinder sleeve: Sold separately
• Fitment: Vehicle-specific

Important Note: WISECO pistons must be paired only with WISECO rings—ring types are not interchangeable. Verify your cylinder sleeve condition before installation; sleeves are sold separately if honing or replacement is required.