Namura Standard Bore Piston Kit Size A 96.95mm for Yamaha WR450F 2021-2023 97mm

Namura Standard Bore Piston Kit Size A 96.95mm for Yamaha WR450F

This Namura standard bore piston kit with size A 96.95mm is a high-performance replacement piston for Yamaha WR450F models from 2021 to 2023, delivering reliable compression and durability for enduro riding with a final bore of 97mm.

Overview

The Namura standard bore piston kit offers a direct-fit replacement for the Yamaha WR450F, providing reliable compression and durability for aggressive off-road riding. Engineered for 2021-2023 models, this kit includes the piston, rings, wrist pin, and circlips for a complete top-end rebuild. It restores original performance while supporting increased power demands.

Built For Performance

• Machined from high-strength aluminum alloy for reduced weight and improved heat dissipation
• Precision-machined ring grooves ensure proper ring seal and reduced blow-by
• Includes a high-quality wrist pin and circlips for secure installation
• Size A 96.95mm bore matches factory specifications for minimal clearance
• Designed to achieve a final 97mm bore after honing for optimal cylinder fit

Fits These Machines

• for Yamaha WR450F (2021-2023)

On-The-Job Use

• Enduro racing and trail riding demanding low-end torque and reliability
• Cross-country competitions requiring consistent power over long distances
• Engine rebuilds to restore compression and extend engine life

Specs At A Glance

Good To Know

Q: Does this piston kit include rings? A: Yes, the kit comes with piston rings, wrist pin, and circlips for a complete installation.

Q: What is the difference between Size A and other sizes? A: Size A is the standard factory bore size for a new cylinder, while other sizes are for oversize rebores.

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