Namura .020 Over Bore Piston Kit for Yamaha Banshee 350 fits 1987-2006 64.5mm

.020 Over Bore Piston Kit for Yamaha Banshee 350

This .020 over bore piston kit is a high-performance replacement designed to restore compression and power for the Yamaha Banshee 350 engine, featuring a 64.5mm bore size and compatible with 1987-2006 models. This over bore piston kit includes rings and wrist pin for a complete top-end rebuild.

Overview

This .020 over bore piston kit is a precision-engineered component for the Yamaha Banshee 350, designed to increase displacement and restore engine compression. It is commonly used in rebuilding the Banshee 350 top end, providing a reliable over bore piston kit that includes all necessary components.

Built For Performance

• .020 oversize increases displacement by approximately 3cc for added torque
• Constructed from high-strength aluminum alloy for durability under high heat and RPM
• Precision-machined ring grooves ensure proper ring seal and oil control
• Includes matching wrist pin and circlips for a complete piston kit
• Designed to match the 64.5mm bore for Yamaha Banshee 350 cylinders

Fits These Machines

• for Yamaha Banshee 350 (1987-2006)

On-The-Job Use

• Used for rebuilding the top end of Yamaha Banshee 350 engines for dune and trail riding
• Commonly used in high-performance ATV applications requiring increased compression
• Suitable for motocross and off-road racing where .020 over bore provides extra power
• Often installed during cylinder refurbishing on 1987-2006 Banshee models

Specs At A Glance

Good To Know

Q: What does .020 over bore mean? A: It means the piston is 0.020 inches larger than standard to compensate for cylinder wear or increase displacement. Confirm your cylinder condition before ordering.

Q: Do I need to re-plate or resleeve the cylinder? A: Not necessarily if the cylinder can be bored to the oversize; always check with a professional machinist before purchasing.

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