MOOSUN Go-Kart Torque Converter CVT Clutch Kit — 3/4" Comet TAV2 Replacement, 30-Series with 12T #35 & 10T #40/41/420 Sprockets

MOOSUN GO-KART TORQUE CONVERTER CVT CLUTCH KIT is a drop-in 3/4" replacement for Comet TAV2-style torque converters that adds smoother acceleration and wider speed range to small engines.

This complete 30-series torque converter kit has been engineered for compatibility with Comet TAV2 models (218353A, 219552A, 219456A, 217610A) and many Manco go-karts that use a 3/4" straight crankshaft. It includes two sprockets for #35 and #40/41/420 chains, a drive belt sized for typical go-kart setups, multiple pulley options, and a full mounting hardware package. The assembly is an aftermarket unit by MOOSUN designed to give hobbyists and fabricators a straightforward swap to improve drivability on engines roughly from 2hp to 8hp.

How does this torque converter improve acceleration and top speed?

The CVT-style torque converter transfers engine power more efficiently than a fixed-gear reduction by allowing variable pulley ratios as load and RPM change. That delivers smoother takeoffs and the potential for higher cruising speeds without swapping sprockets constantly. It is not a power amplifier but optimizes the available torque for better real-world performance.

• 30-series asymmetrical design for progressive engagement
• Two pulley sizes included to match different setups
• Variable ratio action reduces engine lugging at low speeds

Will this unit fit my go-kart engine and chain setup?

MOOSUN's kit is made for engines with a 3/4" straight crankshaft and works with Comet TAV2-style mounts. It includes a 12-tooth sprocket for #35 chain and a 10-tooth sprocket for #40/#41/#420 chains so you can match common final-drive configurations. Check your crank diameter and chain specification before ordering.

• Fits 3/4" straight crankshafts only
• Includes 10T for #40/41/420 chains and 12T for #35 chains
• Compatible with many Comet TAV2 part numbers and Manco frames

What comes in the MOOSUN torque converter kit and what belt size is included?

The package is comprehensive for a direct replacement: driver pulleys, cover, mounting plate, drive belt, and both sprockets so you can install and test on most small-engine karts. The belt is sized to common center-to-center ranges used in kart assemblies and has dimensions suited to the 30-series pulleys.

• 1 x 3/4" driver pulley and 1 x 5/8" driver pulley
• Drive belt: 70.5 cm (27.76") length, 3/4" (0.75") width
• Plastic cover, aluminum mounting plate, full mounting hardware

How should I plan installation and maintenance?

Installation requires basic mechanical skills and tools for mounting and chain alignment; the kit includes hardware and a mounting plate to simplify the swap. After install, verify belt tension and chain alignment regularly, and inspect for wear. This product is aftermarket and not manufactured by Comet.

• Verify 3/4" crank and clearances before fitting
• Adjust belt center-to-center between 6-15/16" and 7" for proper tension
• Periodic checks: belt wear, sprocket teeth, and pulley alignment

Who is this for? MOOSUN's torque converter kit is aimed at go-kart owners, small off-road vehicle builders, and DIY mechanics who want a reliable aftermarket replacement for Comet TAV2 torque converters or need flexibility between #35 and #40-series chain drives. It suits hobby racers, restoration projects, and anyone upgrading drivability on small (roughly 2–8 hp) engines. This kit provides the parts required to install a CVT-style torque converter without sourcing multiple component vendors, but it requires mechanical aptitude and verification of fit before purchase.