Namura .040 Over Bore Piston Kit & Top Bearing for Yamaha Blaster 200 67mm

Namura .040 Over Bore Piston Kit & Top Bearing for Yamaha Blaster 200

This is a Namura .040 over bore piston kit including a top bearing for Yamaha Blaster 200, designed to restore engine compression and performance after a cylinder overbore to 67mm.

Overview

The Namura .040 over bore piston kit and top bearing is a replacement for Yamaha Blaster 200 engines requiring a 67mm piston. This kit includes a forged piston, rings, wrist pin, and top bearing, enabling a fresh top end rebuild. Perfect for restoring power on tired Blaster 200 ATVs.

Built For Performance

• Forged aluminum piston for strength and heat dissipation
• .040-inch oversize (67mm) to match bored cylinder
• Includes top bearing for connecting rod
• High-quality rings for optimal sealing
• Precision-machined to OEM specs

Fits These Machines

• for Yamaha Blaster 200 (all years)

On-The-Job Use

• Trail riding and recreational ATV use
• Racing and performance upgrades
• Engine rebuilds and restoration projects

Specs At A Glance

Good To Know

Q: Does this kit include the piston rings? A: Yes, the kit comes with piston rings, wrist pin, circlips, and the top bearing for a complete top end rebuild.

Q: What clearance is needed for this piston? A: Follow the manufacturer's recommended piston-to-wall clearance, typically 0.003-0.005 inches, and have the cylinder professionally bored to match.

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