Std Bore Pistons for Yamaha Phazer 485 500 cc 1984-2001

Std Bore Pistons for Yamaha Phazer 485/500 cc

These standard bore pistons are replacement engine components for Yamaha Phazer 485 cc and 500 cc snowmobiles, restoring proper compression and piston-to-cylinder fit in the top end.

Overview

These standard bore pistons for Yamaha Phazer 485/500 cc snowmobiles are top-end replacement parts built to restore compression and reliable running in your engine. Each piston is sized to factory standard bore dimensions so it fits the original cylinder without machining. A smart choice for rebuilders keeping a classic Phazer on the snow.

Built For Performance

• Standard bore sizing matches original cylinder dimensions for a direct replacement fit
• Piston body designed for the Yamaha Phazer 485 cc and 500 cc engine platforms
• Sold as pistons for top-end rebuilds covering both sizes used across these model years
• Suited to cast iron or plated cylinder bores as originally equipped
• Compatible with standard ring sets and wrist pins for straightforward assembly

Fits These Machines

• for Yamaha Phazer 485 cc models, 1984 through 2001
• for Yamaha Phazer 500 cc models, 1984 through 2001

On-The-Job Use

• Top-end rebuilds on older Phazer snowmobiles
• Restoring lost compression in a worn engine
• Seasonal maintenance on vintage trail sleds
• Replacement during piston scoring or seizure repair

Specs At A Glance

Good To Know

Q: Are these original Yamaha pistons? A: No, these are aftermarket pistons for Yamaha Phazer engines, not original brand parts. They are sized to standard bore to match factory dimensions.

Q: Do I need to measure my cylinder before ordering? A: Yes, always confirm your bore size and cylinder condition first. Worn or out-of-round cylinders may need machining, which could require an oversize piston instead.

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