2 Namura .040 Over Bore Piston Kits for Kawasaki 650 Prairie, Brute Force 81mm

Namura .040 Over Bore Piston Kits for Kawasaki

This set of two .040 oversize piston kits from Namura is designed to replace the original pistons in Kawasaki 650 Prairie and Brute Force engines with an 81mm bore, restoring compression and performance.

Overview

These Namura .040 over bore piston kits are precision-engineered for Kawasaki 650 Prairie and Brute Force ATVs. Each kit includes a piston, rings, and wrist pin for a complete top-end rebuild. The .040 oversize allows for machining of worn cylinders while maintaining the original 81mm bore specification.

Built For Performance

• High-silicon aluminum alloy casting for strength and heat dissipation
• Moly-coated skirt reduces friction and scuffing during break-in
• CNC-machined pin bores ensure precise wrist pin alignment
• Includes chrome-plated steel rings for long wear and stable compression
• Each piston is individually balanced for smooth high-RPM operation

Fits These Machines

• for Kawasaki 650 Prairie
• for Kawasaki Brute Force

On-The-Job Use

• Trail riding and recreational off-roading
• Farm and ranch utility work
• Mudding and all-terrain adventure
• Engine rebuild or top-end refresh projects

Specs At A Glance

Good To Know

Q: Are these piston kits compatible with my Kawasaki 650 Prairie? A: Yes, these are specifically designed for the 81mm bore Kawasaki 650 Prairie and Brute Force models, making them a direct replacement for worn factory pistons.

Q: Do the kits include all necessary components like rings and pins? A: Each kit includes a piston, piston rings, and a wrist pin, so you have everything needed for a complete piston installation.

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