Namura .020 Over Bore Top End Rebuild Kit for Yamaha 125 Breeze & Grizzly 49.5mm

Namura .020 Over Bore Top End Rebuild Kit for Yamaha 125 Breeze & Grizzly 49.5mm

This Namura .020 Over Bore Top End Rebuild Kit is a complete top-end assembly for Yamaha 125 Breeze and Grizzly models, featuring an oversize 49.5mm piston for cylinder restoration.

Overview

The Namura .020 Over Bore Top End Rebuild Kit provides everything needed to refresh the top end of your Yamaha 125 Breeze or Grizzly ATV. This 49.5mm oversize kit includes a piston, rings, wrist pin, and gaskets, making it a straightforward solution for restoring compression and power. It is designed for engines that have been bored .020 over standard.

Built For Performance

• Oversize 49.5mm piston for .020 over bore applications
• High-strength aluminum alloy construction for durability
• Includes complete top-end gasket set for a seal
• Precision-ground wrist pin for smooth operation
• Moly-coated piston skirt reduces friction and scuffing
• Ring set with proper end gap for heat expansion

Fits These Machines

• for Yamaha 125 Breeze
• for Yamaha Grizzly 125

On-The-Job Use

• Rebuilding top end after bore repair
• Restoring power in utility ATVs used for farm work
• Recreational trail riding on Yamaha Breeze models
• Performing engine overhaul on high-mileage Grizzly ATVs

Specs At A Glance

Good To Know

Q: Is the cylinder boring required before installing this kit? A: Yes, this is an oversize piston and the cylinder must be bored to 49.5mm to accommodate it.

Q: Does the kit include all necessary gaskets for the top end? A: The kit includes a complete set of top-end gaskets, including head gasket and base gasket.

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