Namura .060 Over Bore Piston Bearing Gasket Kit for Yamaha 1993-2001 YZ80 48.5mm

Namura .060 Over Bore Piston Bearing Gasket Kit for Yamaha

This Namura .060 over bore piston bearing and gasket kit replaces the original piston assembly for Yamaha YZ80 models from 1993 to 2001, providing a 48.5mm bore size for a refreshed top end rebuild. The kit includes a precision-machined piston, rings, wrist pin, bearings, and all necessary gaskets to restore compression and performance.

Overview

This Namura .060 over bore piston bearing and gasket kit is a complete top-end rebuild solution for Yamaha YZ80 motorcycles, designed to bring worn cylinders back to like-new condition. It includes every component needed for a direct swap, saving you time sourcing individual parts, and is built to match original specifications for reliable power delivery.

Built For Performance

• Precision-machined 48.5mm piston from high-silicone aluminum alloy for durability and heat resistance
• Includes premium chrome-plated piston rings for consistent compression and low friction
• Needle bearing wrist pin and cage assembly reduces friction and extends top-end life
• Complete gasket set contains all base, head, and exhaust gaskets for a leak-free seal

Fits These Machines

• for Yamaha YZ80 (1993-2001)

On-The-Job Use

• Ideal for motocross and off-road racing where top-end reliability is critical
• Commonly used during full engine rebuilds or when restoring a used YZ80 cylinder
• Suited for riders who need a direct replacement after a bore or cylinder refinish

Specs At A Glance

Good To Know

Q: Does this kit come with the wrist pin circlips? A: Yes, the kit includes the wrist pin, circlips, and needle bearing – everything you need for the piston installation.

Q: Will this .060 over piston work if my cylinder has already been bored? A: This piston is sized for a cylinder that has been bored to 48.50mm, so you must confirm your cylinder bore matches before ordering. If your cylinder is at standard bore or a different oversize, this kit will not fit.

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