4882M07700 Wiseco Std Piston Kit for Yamaha WR250F 2005-2013 77.00mm 12.5:1 CR

Wiseco Std Piston Kit for Yamaha WR250F

This Wiseco Std Piston Kit for Yamaha WR250F is a 77.00mm piston assembly with a 12.5:1 compression ratio, built for top-end rebuilds on 2005-2013 models and cross-referenced as 4882M07700.

Overview

This Wiseco Std Piston Kit for Yamaha WR250F delivers a complete standard-bore piston solution for riders and mechanics rebuilding the top end of a 2005-2013 WR250F. The 77.00mm piston with a 12.5:1 compression ratio restores factory-displacement performance and is a dependable choice for trail riders, racers, and shops servicing these machines.

Built For Performance

• 77.00mm standard bore diameter for stock cylinder fitment
• 12.5:1 compression ratio for responsive low-to-mid range power
• Forged piston construction designed for durability under load
• Complete kit with piston, rings, pin, and clips
• Cross-referenced as 4882M07700 for easy verification

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

• Top-end rebuilds on 2005-2013 WR250F models
• Trail and enduro riding where reliable compression matters
• Routine maintenance when the cylinder is within standard spec
• Shop service work on customer WR250F machines

Specs At A Glance

Good To Know

Q: Is this a standard bore piston? A: Yes, this kit uses a 77.00mm standard bore piston intended for use with a stock-spec cylinder. Confirm your cylinder bore measurement before ordering.

Q: Does the kit include rings and pin? A: This piston kit is supplied with the piston along with its matching rings, pin, and clips. Verify contents against your rebuild plan before installation.

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