Front Track Drive Sprocket for Ski-Doo Nordic 371 399 640 1969-1971

Front Track Drive Sprocket for Ski-Doo Nordic

This front track drive sprocket is a direct replacement component for vintage Ski-Doo Nordic snowmobiles, driving the track by engaging the internal drive lugs as the axle turns.

Overview

This front track drive sprocket is made to replace worn or broken drive sprockets on 1969-1971 Ski-Doo Nordic 371, 399, and 640 models. As the axle rotates, this front track drive sprocket pulls the track around the suspension, transferring engine power into forward motion. It is intended for riders and restorers keeping classic Ski-Doo Nordic machines running on the snow.

Built For Performance

• Direct replacement fit for the original front track drive sprocket on listed Nordic models
• Constructed to withstand the load of track engagement during acceleration and braking
• Designed to mesh cleanly with internal track drive lugs
• Suited to the 371, 399, and 640 engine configurations of the 1969-1971 Nordic line
• Built for consistent drive transfer on vintage snowmobile suspensions

Fits These Machines

• for Ski-Doo Nordic 371, 1969-1971
• for Ski-Doo Nordic 399, 1969-1971
• for Ski-Doo Nordic 640, 1969-1971

On-The-Job Use

• Restoring a vintage Ski-Doo Nordic for trail riding
• Replacing a cracked or stripped sprocket during track service
• Keeping a classic sled running for collector or club events
• Refreshing drive components during a full track rebuild

Specs At A Glance

Good To Know

Q: How do I know this sprocket fits my Nordic? A: Confirm your machine is a 1969-1971 Nordic 371, 399, or 640 and check your existing sprocket against the listing before ordering.

Q: Should sprockets be replaced in pairs? A: Inspecting both drive sprockets at the same time is recommended, since wear often affects the pair together.

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