Namura Size C Standard Bore 66.37mm Piston Kit for Yamaha YZ250 1999-2024 66.4mm

Size C Standard Bore 66.37mm Piston Kit for Yamaha

This Namura Size C standard bore piston kit is a direct replacement for Yamaha YZ250 models from 1999 to 2024, providing a 66.37mm bore diameter for reliable engine performance.

Overview

This Namura Size C standard bore piston kit is designed for Yamaha YZ250 motorcycles, offering a precise 66.37mm bore diameter and 66.4mm oversize option for engine rebuilds. It includes the piston, rings, wrist pin, and circlips for a complete top-end overhaul, making it an essential component for restoring compression and power in Yamaha YZ250 engines.

Built For Performance

• Precision-machined from high-strength aluminum alloy for durability
• Includes matched piston rings for optimal sealing
• Wrist pin and circlips included for hassle-free installation
• Designed to meet OEM specifications for Yamaha YZ250 engines
• Size C designation ensures correct fit for standard bore cylinders

Fits These Machines

• for Yamaha YZ250 (1999-2024)

On-The-Job Use

• Commonly used in motocross racing and off-road trail riding
• Ideal for engine rebuilds and top-end replacements
• Suitable for both recreational and competitive riding
• Used for maintaining peak engine performance on Yamaha YZ250 bikes

Specs At A Glance

Good To Know

Q: Will this piston kit work with a Yamaha YZ250 from 2005? A: Yes, it fits all Yamaha YZ250 models from 1999 through 2024, including 2005, as long as the cylinder bore is standard size (Size C).

Q: Does the kit include all necessary parts for installation? A: Yes, the kit comes with the piston, rings, wrist pin, and circlips, so you have everything needed for a top-end rebuild.

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