MOOSUN Torque Converter Comet-Style 1" Bore Kit with 10T & 12T Sprockets and Belt — Boosts Low-End Torque

If you need a direct-fit torque converter to upgrade or replace a centrifugal clutch on a small vehicle, this MOOSUN kit reproduces the Comet TAV2-style drive characteristics while adding a full hardware package. It’s engineered to accept standard horizontal-shaft engines and improves low-end torque and high-speed gearing without extensive modification. The kit is supplied with both 10-tooth (for 40/41 chain) and 12-tooth (for 35 chain) sprockets so you can match the chain drive on most karts, lawn and garden equipment, and small utility machines.

How does this torque converter improve acceleration and hill-climbing?

The MOOSUN unit delivers more effective torque multiplication at low RPM and smoother engagement than many centrifugal clutches, so launches feel stronger and climbs are easier. By shifting power into a wider low-end band, it reduces stalling and engine lugging under load.

• Designed for the Comet 30-series performance curve to boost takeoff power
• Smoother acceleration due to progressive pulley engagement
• Reduces heat and wear compared to burned-up centrifugal clutches
• Includes driven pulley and belt for optimized power transfer

Will this fit my engine and how simple is the installation?

This kit bolts to most horizontal-shaft small engines and is a direct replacement for many Comet TAV2 part numbers. It arrives as a comprehensive package so installation typically requires basic tools and following the included instructions.

• Driver clutch bore: 1" (24.5 mm) to suit common shafts
• Driven unit overall diameter: 6" with 5/8" driven pulley
• Includes aluminum engine mount plate, jackshaft with sprocket, belt, and all hardware
• Fits engines from Briggs, Honda, Kohler, Lifan, Tecumseh and similar clones

What components come in the MOOSUN torque converter kit?

The package is complete for a bolt-on conversion: both drive and driven clutches, mounting plate, a built-in jackshaft with sprocket, belt, and the fasteners needed for assembly. Two sprocket sizes are included to match common chain types.

• Drive and driven pulleys sized for Comet 30-series applications
• 10T sprocket for 40/41 chain and 12T sprocket for 35 chain included
• Aluminum engine mount plate and jackshaft assembly with hardware
• Step-by-step instructions to streamline installation

How does compatibility with vehicles and uses look?

MOOSUN’s kit is intended for a range of small vehicles and equipment where a torque converter delivers better drivability than a centrifugal clutch. It’s a common upgrade for hobbyist and utility applications where durability and broader speed range are needed.

• Common uses: go-karts, mini bikes, mini choppers, ATVs, small tractors and riding mowers
• Also suitable for utility applications like waterski winches and garden equipment
• Works with many engines that have a horizontal shaft orientation
• Provides a cost-effective alternative to repeatedly replacing failed centrifugal clutches

Who is this for: The MOOSUN Torque Converter Comet Clutch kit is for do-it-yourself mechanics, kart builders, and small-equipment owners who want stronger low-speed torque, smoother acceleration, and a reliable, direct-replacement pulley/chain drive solution. If your machine currently uses a centrifugal clutch and you want upgraded performance, or you’re restoring or customizing a small vehicle with a 1" shaft, this kit supplies the parts and fitment to get the job done without custom fabrication.