2 SPI .020 Over Bore Piston Kits for Ski-Doo 550F Sleds 550 Fan Cooled 76.5mm

SPI .020 Over Bore Piston Kit (Set of 2) for Ski-Doo

This set of two SPI piston kits is designed for Ski-Doo 550F fan cooled snowmobile engines, with a bore size of 76.5mm (0.020 over stock).

Overview

The SPI .020 over bore piston kit set provides reliable replacement pistons for Ski-Doo 550F engines. Each kit includes a piston, rings, and pin for a complete top-end rebuild. These piston kits are intended for use when boring the cylinder 0.020 inches oversize to restore compression and power.

Built For Performance

• Manufactured from high-strength aluminum alloy for durability
• Precision-machined to .020 oversize specification (76.5mm bore)
• Includes rings and wrist pin for a complete kit
• Designed for 550F fan cooled Ski-Doo engines
• Stringent quality control for consistent weight and dimensions

Fits These Machines

• for Ski-Doo 550F fan cooled snowmobiles

On-The-Job Use

• Rebuilding Ski-Doo 550F snowmobile engines
• Replacing worn pistons to restore engine performance
• Trail riding and recreational snowmobiling

Specs At A Glance

Good To Know

Q: Do these piston kits include circlips? A: The kits include the piston, rings, and wrist pin; circlips are typically included but please verify with the listing details.

Q: Are these pistons compatible with a stock bore cylinder? A: No, these are .020 oversize pistons requiring the cylinder to be bored to 76.5mm.

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