020 Over Pistons for Yamaha Enticer 340 1978-1988

0.020 Over Pistons for Yamaha Enticer 340

These 0.020 over pistons for Yamaha Enticer 340 snowmobiles restore compression in a rebored engine and are sized to match a 0.020 inch oversize cylinder bore.

Overview

These 0.020 over pistons for Yamaha Enticer 340 models are sized for cylinders bored 0.020 inches over standard, making them the right choice after a rebore. They restore piston-to-wall clearance and compression on a worn top end, giving the engine a fresh, stable running condition for trail use.

Built For Performance

• Produced at 0.020 inch oversize to match a rebored cylinder
• Restores compression lost to a worn or scored piston
• Designed for the Yamaha Enticer 340 two-stroke top end
• Supports proper piston-to-cylinder clearance after machining
• Suited to rebuilds across the 1978 to 1988 model run

Fits These Machines

• for Yamaha Enticer 340 1978
• for Yamaha Enticer 340 1979
• for Yamaha Enticer 340 1980
• for Yamaha Enticer 340 1981
• for Yamaha Enticer 340 1982
• for Yamaha Enticer 340 1983
• for Yamaha Enticer 340 1984
• for Yamaha Enticer 340 1985
• for Yamaha Enticer 340 1986
• for Yamaha Enticer 340 1987
• for Yamaha Enticer 340 1988

On-The-Job Use

• Top-end rebuilds after a cylinder rebore
• Restoring compression on a high-mileage Enticer 340
• Repairing an engine that seized or lost power
• Seasonal refresh ahead of winter trail riding

Specs At A Glance

Good To Know

Q: Does a 0.020 over piston drop into a standard cylinder? A: No, the cylinder must first be bored and honed to match the 0.020 oversize before this piston is installed.

Q: Should I replace both pistons at the same time? A: On a twin-cylinder Enticer 340 it is best practice to replace both so compression and balance stay even across the engine.

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