GYMMEDS Centrifugal Clutch 3/4" Bore 12-Tooth for #35 Chain — Steel, Bolt & Washer Kit

GYMMEDS 12-tooth centrifugal clutch (3/4" bore) is a bolt-on performance replacement designed to engage #35 chain drivetrains on 3/4" crankshafts like Predator 212cc and many Honda GC/GX small engines.

This compact clutch converts engine RPM into smooth, automatic engagement for minibikes, go-karts, mini choppers and a wide range of garden and workshop equipment. Machined from impact- and wear-resistant steel and supplied with a bolt, washer kit and mounting screws, it’s intended as a direct-fit, durable alternative for engines with a 3/4" crankshaft and 3/16" keyway.

How does this clutch fit my engine and drivetrain?

The GYMMEDS clutch is built for engines that use a 3/4" crankshaft and a 3/16" keyway. It is compatible with Predator 212cc engines and many Honda models such as the GC160, GX160, GX200 and similar small engines, plus common 5.5–6.5HP clone motors.

• 3/4" bore with 3/16" keyway — standard for many small engines
• 12 teeth sized for #35 roller chain drive systems
• Intended for use on minibikes, go-karts, mini choppers and small machinery
• Check crankshaft diameter and key slot before ordering

What performance and durability features does it offer?

Manufactured from high-grade, impact- and wear-resistant steel, this centrifugal clutch is optimized for heat dissipation and torque transfer. The design emphasizes long service life under repeated engagement cycles, while remaining lightweight for sport applications.

• High-impact steel construction for improved wear resistance
• Fast heat dissipation to reduce overheating under load
• Balanced for reliable engagement and reduced vibration
• 12-tooth profile matched to #35 chain for secure power transfer

Is installation difficult and what hardware is included?

Installation is straightforward with the included hardware and basic hand tools. The clutch mounts on the crankshaft using the supplied bolt and washer; two set screws provide secondary retention for a secure fit.

• Package includes clutch, bolt, washer kit, wrench and two screws
• Mounts on crankshaft end using provided bolt and washer
• Set screws add extra security against axial movement
• Typical install requires basic socket or wrench and torque per engine spec

Will this clutch work for racing or heavy-duty use?

While designed for robust hobby and light commercial use, suitability for racing or heavy continuous loads depends on your setup and tuning. The clutch offers strong torque capacity for small-engine applications, but extreme or racing conditions may call for specialty clutches or staged modifications.

• Great for recreational go-karts and minibikes under normal loads
• Consider performance tuning or higher-rated clutches for sustained racing
• Inspect engagement behavior and temperature after initial runs
• Compatible with many 4–7 HP engines commonly used in DIY builds

Who is this for: This GYMMEDS centrifugal clutch is aimed at DIY builders, garage mechanics and hobbyists upgrading or repairing minibikes, go-karts, small garden machinery and light equipment that use #35 chain and have a 3/4" crankshaft with a 3/16" keyway. It’s a practical replacement part for owners of Predator 212cc, Honda GC/GX series and compatible clone engines who need a durable, easy-to-install clutch with included mounting hardware.