2 Namura .040 Over Bore Piston Kits for Yamaha Banshee 350 fits 1987-2006 65mm

2 Namura .040 Over Bore Piston Kits for Yamaha Banshee 350

This set of two .040 over bore piston kits is designed for the Yamaha Banshee 350, offering a 65mm bore size to restore or enhance engine performance in models from 1987 to 2006.

Overview

These aftermarket piston kits are built to replace worn or damaged pistons in Yamaha Banshee 350 ATVs, providing a precise .040 overbore to increase displacement and restore compression. Designed for the Yamaha Banshee 350, each kit includes the piston, rings, and wrist pin for a complete top-end rebuild. The 65mm bore size ensures a proper fit for the 1987-2006 models.

Built For Performance

• Precision-machined from high-silicon aluminum alloy for durability and heat dissipation
• .040 overbore increases cylinder displacement for added power
• Includes piston rings and wrist pin for a complete installation
• Designed to match OEM specifications for reliable fit and function
• Each kit is weight-matched to ensure balanced engine operation

Fits These Machines

• for Yamaha Banshee 350 (1987-2006)

On-The-Job Use

• Used in recreational trail riding and off-road racing
• Ideal for top-end engine rebuilds and performance upgrades
• Commonly installed in dune riding and motocross applications
• Provides reliable operation in high-RPM sport ATV use

Specs At A Glance

Good To Know

Q: Are these piston kits suitable for a stock cylinder? A: Yes, these .040 over bore pistons are designed for a cylinder that has been bored to the corresponding size, typically requiring a professional machine shop to bore the cylinder.

Q: Does the kit include all necessary rings and pins? A: Yes, each kit comes with piston rings and a wrist pin, but you may need to reuse or replace circlips separately depending on your existing components.

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