Namura Standard Bore Size B Piston & Gasket Kit for Yamaha YZ450F 2018-2019 97mm

Standard Bore Size B Piston & Gasket Kit for Yamaha YZ450F

This piston and gasket kit provides a direct replacement for Yamaha YZ450F models from 2018 to 2019, featuring a 97mm standard bore size B and includes all necessary gaskets for a complete top-end rebuild.

Overview

This piston and gasket kit is designed to restore compression and performance in Yamaha YZ450F engines. It includes a precision-machined piston and a full set of gaskets, making it ideal for routine maintenance or rebuilds. The 97mm standard bore size B ensures a proper fit for 2018-2019 YZ450F models.

Built For Performance

• Precision-machined from high-strength aluminum alloy
• Includes complete gasket set for head and base
• Matches factory weight and profile
• Designed for standard bore size B (97mm)
• Pre-lubricated piston pin included

Fits These Machines

• for Yamaha YZ450F (2018)
• for Yamaha YZ450F (2019)

On-The-Job Use

• Motocross racing
• Enduro and trail riding
• Off-road competition
• Rebuilding worn-out top ends

Specs At A Glance

Good To Know

Q: Is this a direct replacement for my stock piston? A: Yes, this kit uses standard bore size B, matching the OEM specification for 2018-2019 YZ450F.

Q: Do I need to replace the gaskets separately? A: No, the kit includes all necessary gaskets for installation, so you have everything in one package.

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