GYMMEDS 30-Series Torque Converter Kit for 3/4in Crank (Predator 212cc) — Dual Pulleys & 10/12T Sprockets

GYMMEDS 30 Series Torque Converter kit is a direct-replacement CVT drive assembly for 3/4" straight-crank engines, delivering smoother acceleration and simplified installation for go-karts, mini bikes and small utility machines.

This complete 30-series torque converter package is built to swap into popular Comet TAV2-style systems and fits most 2–7 HP engines with a 3/4" straight crankshaft, including Predator 212cc. The kit includes two driver sprockets (10T and 12T), two driver pulleys (3/4" and 5/8"), a drive belt, mounting plate, cover and full hardware — plus dual screw sets for both UNF and metric shaft threads. Components are aluminum and iron for a balance of weight savings and durability, and the engagement range can be tuned by changing springs (sold separately) to suit different loads and riding styles.

What engines and vehicles will this torque converter fit?

The GYMMEDS 30 Series is designed for engines with a 3/4" straight crankshaft and a flat key, commonly found on Predator 212cc and similar 6.5 HP engines. It replaces Comet-style TAV2 30-series assemblies and works across a wide set of small machines.

• Recommended for 2–7 HP horizontal shaft engines (3/4" straight crank).
• Direct fit for Predator 212cc 6.5 HP and many clone engines.
• Compatible with go-karts, mini bikes, ATVs, garden tractors, mini choppers, and waterski winches.
• Requires matching chain size: 10T for #40/41/420 chain, 12T for #35 chain (chains not included).

How does installation and compatibility work on my vehicle?

The kit ships with the parts needed to mount directly to the crank and rear sprocket cluster; installation is straightforward for anyone with basic mechanical tools. Two screw kits are included so you can select UNF (American) or metric fasteners depending on your engine's thread standard.

• Includes driver pulleys (3/4" and 5/8"), mounting plate, plastic cover and hardware.
• Two screw kits: one UNF set (for Honda/Predator-style shafts) and one metric set.
• Chain and springs are not included — chain selection and spring swaps let you tune final gearing and engagement rpm.
• Standard tools and a service manual or torque specs for your engine recommended for safe fitment.

What performance changes and adjustments can I expect?

The torque converter smooths initial acceleration, reduces lugging under load, and allows the engine to operate closer to its optimal RPM range. Engagement is set near 2350 RPM out of the box but can be adjusted by changing springs and minor set-up changes to suit heavier loads or quicker takeoff.

• Factory engagement ~2350 RPM; adjustable roughly 1200–3100 RPM with spring changes.
• Aluminum and iron construction reduces rotating mass while maintaining strength.
• Swap sprockets to alter final drive ratio for speed or torque emphasis.
• Improves drivability on inclines and when carrying heavier loads compared with direct-drive setups.

Which parts are included and what will I still need?

The kit is comprehensive for converting or replacing a 30-series torque converter but expects a few vehicle-specific items to be sourced separately. Chains and spring sets for engagement tuning are common additions you may already have or can buy as required.

• Included: 3/4" driver pulley, 5/8" driver pulley, drive belt, 10T and 12T sprockets, aluminum mounting plate, plastic cover and full mounting hardware.
• Included: two screw kits (UNF and metric) to fit various crankshaft thread standards.
• Not included: drive chain, tor-con springs for different engagement curves, engine-specific gaskets or specialty tools.
• Recommended: basic shop tools, threadlocker for mounting bolts, and torque wrench for safe installation.

Who this is for: This GYMMEDS torque converter kit is aimed at hobbyists and small-vehicle owners who want a durable, drop-in replacement for Comet-style 30-series CVT drives. It's ideal if you run a Predator 212cc or similar horizontal-shaft engine and need a ready-made kit with both sprocket options and hardware to simplify installation and tuning for go-karts, mini bikes, ATVs, or utility machines.