Namura Standard Bore Piston Rings for Yamaha 2003-2009 YZ450F & 2003-2015 WR450F

Namura Standard Bore Piston Rings for Yamaha

These Namura Standard Bore Piston Rings for Yamaha provide reliable compression and oil control for YZ450F and WR450F engines, ensuring proper sealing and reduced blow-by in high-performance dirt bikes.

Overview

The Namura Standard Bore Piston Rings are designed for Yamaha YZ450F and WR450F models from 2003 to 2009 and 2003 to 2015 respectively. They serve as a direct replacement for worn OEM rings, restoring engine performance. These rings are ideal for off-road enthusiasts and racers rebuilding their top end.

Built For Performance

• Standard bore diameter for OEM replacement
• High-quality steel alloy construction
• Designed for improved ring seal and durability
• Includes top and second compression rings plus oil ring
• Compatible with stock pistons and cylinders

Fits These Machines

• for Yamaha YZ450F 2003-2009
• for Yamaha WR450F 2003-2015

On-The-Job Use

• Trail riding and enduro competitions
• Motocross track days
• Engine rebuilds and top-end overhauls
• General off-road riding

Specs At A Glance

Good To Know

Q: Can these rings be used with oversized pistons?A: No, these are standard bore rings designed for a standard bore cylinder and piston.

Q: Do they come with a gap specification?A: Yes, new rings should be installed with the recommended end gap per the Yamaha service manual.

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