Namura Size B Forged Piston Kit for Yamaha 2014-2019 YZ450F Standard Bore 97mm

Namura Size B Forged Piston Kit for Yamaha

The Namura Size B Forged Piston Kit for Yamaha YZ450F is a high-performance replacement piston designed for standard bore 97mm engines, offering improved durability and power for your dirt bike.

Overview

This Namura forged piston kit is engineered for the Yamaha YZ450F from 2014 to 2019, providing a direct replacement that restores compression and enhances engine response. The kit includes the piston, rings, and wrist pin for a complete top-end rebuild.

Built For Performance

• Forged from high-strength 4032 aluminum alloy for superior heat resistance
• Precision-machined to exacting tolerances for optimal ring seal
• Lightweight design reduces reciprocating mass for quicker revs
• Reinforced pin boss area to handle high horsepower loads
• Includes premium chrome-plated steel rings for reduced friction

Fits These Machines

• for Yamaha YZ450F (2014-2019)

On-The-Job Use

• Motocross racing
• Off-road trail riding
• Enduro competitions
• Engine rebuilds and performance upgrades

Specs At A Glance

Good To Know

Q: Do I need to replace the cylinder with this piston? A: No, this piston is designed for a standard bore cylinder; simply ensure the cylinder is within service limits and deglazed before installation.

Q: What clearance should I use for this forged piston? A: Forged pistons require a slightly larger piston-to-wall clearance than cast pistons; follow the manufacturer's specifications included in the kit.

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