Namura Standard Bore Piston Kit Size C for Yamaha YZ250F & WR250F 2005-2013 77mm

Namura Standard Bore Piston Kit Size C (77mm) for Yamaha YZ250F & WR250F 2005-2013

This Namura Standard Bore Piston Kit Size C with a 77mm bore is a direct replacement piston assembly designed to restore compression and performance for Yamaha YZ250F and WR250F models from 2005 to 2013.

Overview

The Namura Standard Bore Piston Kit Size C is engineered for precise fitment in both Yamaha YZ250F motocross and WR250F enduro motorcycles. This piston kit delivers reliable top-end performance and power recovery for a wide range of off-road applications. Regular replacement with this piston kit helps maintain engine health and performance.

Built For Performance

• Precision-machined from high-silicone aluminum alloy for durability
• Moly-coated skirt reduces friction and scuff resistance
• Complete set includes piston, rings, wrist pin, and circlips
• 77mm bore size for standard replacement
• Engineered to OEM tolerances for YZ250F and WR250F engines
• Heat-treated for long service life

Fits These Machines

• for Yamaha YZ250F (2005-2013)
• for Yamaha WR250F (2005-2013)

On-The-Job Use

• Commonly used for top-end rebuilds on YZ250F motocross and WR250F enduro bikes
• Ideal for restoring compression in competition and trail machines
• Suitable for both MX and off-road riding applications
• Used by mechanics for engine overhauls on 2005-2013 Yamaha 250F models

Specs At A Glance

Good To Know

Q: Will this piston kit fit my 2008 YZ250F? A: Yes, this Standard Bore Piston Kit Size C is designed for Yamaha YZ250F and WR250F from 2005-2013; verify your cylinder bore condition before installation.

Q: Does this kit include all necessary parts? A: Yes, the kit includes piston, rings, wrist pin, and circlips for a complete installation; always reuse existing clips and pins if they are in good condition.

Slight variation in finish or dimensions may occur between production runs, and confirm compatibility before ordering.