Namura .020 Over Bore Piston Bearing & Gasket Kit for Yamaha PW80 & BW80 47.5mm

.020 Over Bore Piston Bearing & Gasket Kit for Yamaha

This .020 over bore piston bearing and gasket kit is a complete top end rebuild solution for the Yamaha PW80 and BW80, featuring a 47.5mm bore size.

Overview

This piston bearing and gasket kit provides everything needed to refresh the top end of your two-stroke engine. The .020 over bore size allows for a fresh piston installation after cylinder boring, ensuring a tight seal and restored compression. Designed for Yamaha PW80 and BW80 models, this kit is a reliable choice for mechanics and DIY enthusiasts.

Built For Performance

• Includes piston, piston bearing, and complete gasket set
• 0.020 over bore size for cylinder reconditioning
• 47.5mm bore diameter for Yamaha PW80/BW80
• Precision-machined for proper fitment
• Durable construction for long service life

Fits These Machines

• for Yamaha PW80
• for Yamaha BW80

On-The-Job Use

• Restoring top end performance on Yamaha PW80 and BW80 dirt bikes
• Rebuilding engines for trail riding and off-road use
• Replacing worn piston and gasket components for reliable operation
• Performing complete cylinder overhaul in a home garage

Specs At A Glance

Good To Know

Q: Does this kit include a wrist pin? A: This kit includes the piston, bearing, and gaskets, but does not include a wrist pin. Please reuse your existing wrist pin or purchase separately if needed.

Q: Can this kit be used on a standard bore cylinder? A: No, this is an .020 over bore kit intended for cylinders that have been bored oversize. Using it on a standard bore cylinder will not fit properly.

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