Front Track Drive Sprocket for Ski-Doo Olympique 340 370 399 401 1969-1978

Front Track Drive Sprocket for Ski-Doo Olympique 340/370/399/401

This front track drive sprocket fits Ski-Doo Olympique 340, 370, 399, and 401 models from 1969 through 1978 and drives the track at the front axle to keep your snowmobile moving.

Overview

This front track drive sprocket is built for Ski-Doo Olympique 340, 370, 399, and 401 snowmobiles produced between 1969 and 1978. The sprocket engages the internal track lugs at the front drive axle, transferring engine power into forward motion. It is a direct-fit replacement for riders restoring or maintaining these classic Olympique machines.

Built For Performance

• Designed to match the front drive axle configuration of 1969-1978 Ski-Doo Olympique 340/370/399/401 models
• Teeth shaped to engage internal track lugs for consistent power transfer
• Durable construction suited to the loads of vintage snowmobile drivetrains
• Direct replacement for a worn or stripped original sprocket
• Restores positive track engagement and reduces drivetrain slip

Fits These Machines

• for Ski-Doo Olympique 340, 1969-1978
• for Ski-Doo Olympique 370, 1969-1978
• for Ski-Doo Olympique 399, 1969-1978
• for Ski-Doo Olympique 401, 1969-1978

On-The-Job Use

• Rebuilding the front drive axle on a vintage Olympique
• Replacing a cracked or worn sprocket before trail season
• Restoring a classic Ski-Doo for show or recreational riding
• Servicing the track drive system during routine maintenance

Specs At A Glance

Good To Know

Q: How do I know if my front track drive sprocket needs replacing? A: Common signs include missing or rounded teeth, cracking around the hub, and the track slipping or ratcheting under acceleration. Inspect the sprocket whenever the track or drive axle is serviced.

Q: Does this sprocket fit all four Olympique engine sizes listed? A: It is listed for Ski-Doo Olympique 340, 370, 399, and 401 models from 1969 to 1978. Confirm your model year and serial number before ordering, since fit can vary within a production run.

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