Namura .020 Over Bore Piston Kit for Ski-Doo 600 ACE 4-Strokes 2011-2024 74.5mm

.020 Over Bore Piston Kit for Ski-Doo

A .020 oversize piston kit for Ski-Doo 600 ACE 4-stroke engines, featuring a 74.5mm diameter piston and all necessary components for an engine rebuild after boring.

Overview

This .020 over bore piston kit for Ski-Doo is designed to restore power and compression in 600 ACE 4-stroke snowmobile engines from 2011 to 2024. The kit includes a 74.5mm oversize piston, rings, wrist pin, and circlips, making it a complete solution for rebuilding after cylinder wear or scoring.

Built For Performance

• Forged aluminum piston construction for strength and heat dissipation
• Precision-machined ring lands and skirt profile for reduced friction
• Includes a matched set of piston rings with proper end gaps
• Hardened steel wrist pin with smooth surface finish
• Heat-treated circlips for secure retention
• Designed for use with .020 over bore cylinders

Fits These Machines

• for Ski-Doo 600 ACE 4-Stroke (2011-2024)

On-The-Job Use

• Engine rebuild when cylinder requires oversize boring due to wear or scoring
• Restoring compression and power in high-mileage Ski-Doo 600 ACE engines
• Performance restoration after piston seizure or ring failure
• Rebuild projects requiring an exact .020 oversize replacement

Specs At A Glance

Good To Know

Q: Do I need to bore my cylinder to use this kit? A: Yes; this .020 over bore piston requires the cylinder to be machined to the corresponding oversize for a proper fit.

Q: Can I reuse the original wrist pin bearing? A: It is recommended to replace the wrist pin bearing and circlips each time the piston is replaced to ensure reliable operation.

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