Namura .020 Over Bore Piston Kit Size B (47.45mm) for Yamaha 1993-01 YZ80 47.5mm

.020 Over Bore Piston Kit Size B (47.45mm) for Yamaha

This piston kit is an .020 over bore size B at 47.45mm for 1993-2001 Yamaha YZ80 models, designed to restore engine performance after cylinder reconditioning.

Overview

This .020 over bore piston kit is intended for 1993-2001 Yamaha YZ80 two-stroke engines, featuring size B with a 47.45mm diameter. It provides a precise replacement for worn cylinders that have been bored oversize, ensuring proper clearance and compression.

Built For Performance

• Manufactured from high-strength aluminum alloy for longevity
• Oversized design accommodates reconditioned cylinders
• Includes high-quality piston rings for effective sealing
• Wrist pin and circlips supplied for complete assembly
• Rigorous inspection ensures dimensional accuracy

Fits These Machines

• for Yamaha YZ80 (1993-2001)

On-The-Job Use

• Motocross and supercross racing
• Trail and off-road riding
• Engine rebuilds after cylinder boring
• Performance restorations
• Competitive racing applications

Specs At A Glance

Good To Know

Q: Will this piston kit work with a standard bore cylinder? A: This is an .020 over bore piston, so it requires the cylinder to be bored to the corresponding oversize. It will not fit a standard bore cylinder.

Q: How do I confirm the correct size for my YZ80? A: Measure your cylinder bore after reconditioning or consult your service manual. The kit is designed for 1993-2001 Yamaha YZ80 models with a 47.45mm bore size.

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