Namura Standard Bore Size B Piston & Gasket Kit for Yamaha YFZ450 95mm

Standard Bore Size B Piston & Gasket Kit for Yamaha YFZ450

This is a Namura replacement piston and gasket kit with a standard bore size B (95mm) designed for Yamaha YFZ450 ATVs, providing reliable compression and performance for engine rebuilding.

Overview

This Namura standard bore size B piston and gasket kit is built for Yamaha YFZ450 engines requiring a 95mm bore. The kit includes a high-quality piston, rings, wrist pin, and all necessary gaskets for a complete top-end rebuild. It delivers the compression and durability needed to restore power and reliability to your YFZ450.

Built For Performance

• Precision-machined 95mm bore piston from high-silicon aluminum alloy
• Matched ring set with low-tension oil ring for reduced friction
• Includes cylinder head gasket, base gasket, and all sealing components
• Standard bore size B ensures proper clearance for stock cylinder bores
• Wrist pin and circlips included for complete installation

Fits These Machines

• for Yamaha YFZ450 (2004–2009 models with 95mm bore)

Specs At A Glance

Good To Know

Q: Does this kit include the gasket set for the entire top end? A: Yes, it includes the head gasket, base gasket, and other sealing components needed for a full piston replacement.

Q: Can I use this piston in a YFZ450 that has been bored oversize? A: No, this is a standard bore size B piston for stock 95mm cylinders; oversize cylinders require corresponding oversize pistons.

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