PK1401 Wiseco Std Piston Gasket Set for Yamaha WR250F 2005-2013 12.5:1

Wiseco Std Piston and Gasket Set for Yamaha WR250F

This Wiseco Std Piston and Gasket Set is a complete top-end rebuild kit for the Yamaha WR250F, offering a 12.5:1 compression piston with cross-reference PK1401 plus all the gaskets needed to seal the job.

Overview

This Wiseco Std Piston and Gasket Set gives Yamaha WR250F owners a matched top-end solution that pairs a forged 12.5:1 compression piston with the gaskets required for a clean rebuild. The kit carries part number PK1401, making cross-referencing straightforward before ordering. It is aimed at riders and mechanics doing routine piston replacement or a full refresh on the 2005 to 2013 WR250F.

Built For Performance

• Standard bore forged piston for the Yamaha WR250F top end
• 12.5:1 compression ratio for responsive engine response
• Includes a gasket set to seal the top-end during reassembly
• Cross-reference part number PK1401 for easy verification
• Forged construction suited to the demands of off-road riding
• Kit format that keeps piston and gaskets matched to one another

Fits These Machines

• for Yamaha WR250F 2005
• for Yamaha WR250F 2006
• for Yamaha WR250F 2007
• for Yamaha WR250F 2008
• for Yamaha WR250F 2009
• for Yamaha WR250F 2010
• for Yamaha WR250F 2011
• for Yamaha WR250F 2012
• for Yamaha WR250F 2013

On-The-Job Use

• Routine top-end rebuilds on the Yamaha WR250F
• Restoring compression on a worn or tired engine
• Trail and enduro riding where consistent power delivery matters
• Off-season maintenance and preventive refresh work
• Shop and garage rebuilds where matched components save time

Specs At A Glance

Good To Know

Q: Is this an original Yamaha piston? A: No, this is a Wiseco piston and gasket set made for the Yamaha WR250F, sold as an aftermarket replacement. It is not an original equipment brand part.

Q: Will the gasket set cover a full top-end rebuild? A: The kit pairs the piston with a gasket set intended for top-end reassembly on the WR250F. Confirm the exact components listed for your model year before ordering.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.