Front Track Drive Sprocket for Ski-Doo Alpine 640 1969-1982

Front Track Drive Sprocket for Ski-Doo Alpine 640

This front track drive sprocket fits Ski-Doo Alpine 640 snowmobiles from 1969 through 1982, transferring engine power to the track so the machine moves under load.

Overview

This front track drive sprocket is built for the Ski-Doo Alpine 640 and serves as the drive point where the track engages the suspension. It replaces a worn or stripped sprocket so the track grabs cleanly and the sled keeps moving. It suits vintage Alpine owners keeping a 1969-1982 machine running.

Built For Performance

• Direct fit for the Ski-Doo Alpine 640 front track drive position
• Teeth shaped to match the track drive windows for positive engagement
• Durable construction suited to snow and ice running
• Balanced design that reduces vibration through the drive axle
• Designed as a drop-in replacement for the original drive sprocket

Fits These Machines

• for Ski-Doo Alpine 640 (1969-1982)

On-The-Job Use

• Trail riding on vintage Ski-Doo Alpine 640 machines
• Utility work pulling loads in snow
• Restoration and maintenance of older Alpine sleds
• Track drive rebuilds when the original sprocket is stripped

Specs At A Glance

Good To Know

Q: How do I know this sprocket fits my Alpine 640? A: Confirm your machine is a Ski-Doo Alpine 640 within the 1969-1982 range, since fit can vary by model year and serial number.

Q: Why replace the front drive sprocket? A: A stripped or worn sprocket lets the track slip under power, so replacing it restores drive and keeps the sled moving.

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