Namura .040 Over Bore Piston Kit for Polaris 1990-1993 350 2-Stroke ATV's 81mm

Namura .040 Over Bore Piston Kit for Polaris

This Namura .040 Over Bore Piston Kit is engineered for Polaris 350 2-stroke ATVs from 1990 to 1993, featuring an 81mm bore diameter for engine overhauls.

Overview

The .040 Over Bore Piston Kit for Polaris is designed to restore power in 350cc 2-stroke ATV engines. This 81mm overbore piston kit allows for a cylinder rebore, providing a fresh surface and renewed compression. It is a direct replacement for worn pistons in Polaris 350 models from 1990-1993.

Built For Performance

• .040 oversize piston for cylinder rebore
• Includes piston, rings, wrist pin, and circlips
• High-strength aluminum alloy for 2-stroke applications
• Precision-machined for accurate fit
• Designed to restore compression and performance

Fits These Machines

• for Polaris 350 2-Stroke ATV (1990-1993)

On-The-Job Use

• Rebuilding top end of Polaris 350 2-stroke engines
• Restoring lost compression and power
• Replacing worn pistons during engine overhaul
• Common repair for Polaris ATVs with high hours

Specs At A Glance

Good To Know

Q: Will this overbore piston kit fit my 1992 Polaris 350? A: Yes, this kit is designed for Polaris 350 2-stroke ATVs from 1990 to 1993 with an 81mm overbore.

Q: What is included in this kit? A: The kit includes a piston, rings, wrist pin, and circlips, necessary for a complete top-end rebuild.

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