Namura .040 Over Bore Top End Repair Kit for Yamaha Kodiak 450 2018-2025 85.5mm

Top End Repair Kit .040 Over Bore 85.5mm for Yamaha Kodiak 450 2018-2025

This top end repair kit delivers all necessary components to restore cylinder sealing and power in Yamaha Kodiak 450 ATVs from 2018 to 2025, featuring a .040 over bore size of 85.5mm.

Overview

The Namura .040 over bore top end repair kit is a complete replacement assembly for the cylinder top end of Yamaha Kodiak 450 models. It provides a new piston, rings, wrist pin, and circlips to rebuild worn or damaged engines. This kit is ideal for off-road enthusiasts needing a reliable top end rebuild with a .040 over bore.

Built For Performance

• Precision-cast piston with a .040 over bore for renewed compression
• High-quality piston rings for optimal seal and oil control
• Heat-treated wrist pin for reduced friction and long life
• Includes all necessary circlips and pin for complete installation
• Engineered to match OEM specifications for reliable fit and function

Fits These Machines

• for Yamaha Kodiak 450 (2018-2025)

On-The-Job Use

• Trail riding and recreational off-roading
• Utility work on farms and ranches
• Hunting and outdoor expeditions
• General ATV maintenance and engine rebuilding

Specs At A Glance

Good To Know

Q: What is the break-in procedure for a new top end kit? A: Follow a gradual break-in with varying RPMs and avoid sustained full-throttle for the first hour to seat the rings properly.

Q: How do I confirm this kit fits my specific ATV? A: Verify your engine's serial number and current bore size; this kit is designed for engines requiring a .040 over bore from the standard 85mm.

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