Namura Standard Bore Top End Rebuild Kit Size A for Yamaha YZ85 2019-2025 47.5mm

Standard Bore Top End Rebuild Kit Size A for Yamaha

This Standard Bore Top End Rebuild Kit Size A is a complete piston, ring, pin, clip, and gasket set designed to restore compression and power in your Yamaha YZ85 from 2019-2025 with a 47.5mm bore.

Overview

The Standard Bore Top End Rebuild Kit Size A provides everything needed to refresh the top end of your Yamaha YZ85, delivering reliable performance and consistent compression for off-road riding. This rebuild kit is engineered for the 47.5mm bore size and fits the 2019-2025 model range.

Built For Performance

• Includes forged piston for high-strength and reduced expansion
• Precision-ground rings ensure optimal seal and compression
• Complete gasket set prevents leaks and simplifies installation
• Wrist pin and clips included for a secure connection
• Manufactured to meet OEM specifications for lasting durability

Fits These Machines

• for Yamaha YZ85 2019-2025

On-The-Job Use

• Top end rebuild for motocross and trail riding
• Restores performance after extended use or engine failure
• Ideal for routine maintenance and engine overhauls

Specs At A Glance

Good To Know

Q: Does this kit include the cylinder head gasket? A: Yes, the kit contains all necessary gaskets for a complete top end install, including the base gasket, head gasket, and exhaust gasket.

Q: Can the piston be used with other bore sizes? A: No, this piston is marked Size A and is only suitable for a 47.5mm standard bore; using it outside this specification will cause poor fit and damage.

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