Namura .040 Over Bore Hi Compression Piston Kit for Yamaha Blaster 200 67mm

Namura .040 Over Bore Hi Compression Piston Kit for Yamaha Blaster 200

This aftermarket .040 over bore hi compression piston kit from Namura is designed for the Yamaha Blaster 200 ATV, increasing displacement to 67mm for added power. It serves as a direct replacement for the stock piston and is ideal for rebuilds or performance upgrades.

Overview

The Namura .040 over bore hi compression piston kit for Yamaha Blaster 200 delivers a 67mm bore size that raises compression and boosts horsepower. This piston kit is intended for owners looking to rebuild or enhance their Blaster 200 engine. With a .040 overbore (1mm oversize), it offers a cost-effective way to refresh your top end while gaining extra low-end torque and throttle response.

Built For Performance

• Cast aluminum alloy construction for strength and heat dissipation
• High-compression dome design increases cylinder pressure
• Precision-machined to .040 inch over stock bore (67mm)
• Includes piston, rings, wrist pin, and circlips for a complete kit
• Compatible with standard Yamaha Blaster 200 connecting rod and cylinder

Fits These Machines

• for Yamaha Blaster 200 (YFS200)

On-The-Job Use

• Performance trail riding and desert riding
• Dune riding and recreational ATV racing
• Engine rebuilds and top-end overhauls
• Improving low-end power for climbing or heavy loads

Specs At A Glance

Good To Know

Q: Will this piston kit require cylinder boring? A: Yes, because it is a .040 over-sized piston, your cylinder must be bored and honed to match the 67mm diameter by a qualified machine shop.

Q: Do I need to rejet my carburetor after installing a hi-compression piston? A: Typically yes, the increased compression changes the fuel-air mixture demand; rejetting is recommended to prevent lean conditions and maximize performance gains.

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