Vashly 11-Tooth Centrifugal Clutch for Go Karts 5/8" Bore — #35 Chain, Iron, Reversible Mount

Vashly’s 11-tooth centrifugal clutch with a 5/8" bore is a durable, bolt-on drive clutch designed to transfer power from small engines to a #35 chain for single-wheel-drive go karts, minibikes, and utility engines.

This centrifugal clutch is built to mount directly to common small-engine crankshafts (including many Predator-style 2–6.5 HP engines) and engages automatically as RPM rises. Constructed from iron for strength and heat dissipation, the unit is finished as a compact, reversible assembly with hardware included for straightforward installation. It pairs with #35 chain and is optimized for single-wheel-drive setups with tires up to about 15" tall.

How does this clutch engage and protect the engine during operation?

The clutch uses centrifugal force: as engine RPM increases, weighted shoes move outward and press against the drum, transferring torque to the sprocket. This automatic engagement reduces shock loading on the engine and drivetrain during starts, helping smoother launches compared with direct-drive systems.

• 11-tooth sprocket sized for #35 roller chain compatibility.
• 5/8" bore fits many small-engine crankshafts (check shaft diameter).
• Centrifugal action provides progressive engagement for gentler starts.
• Reversible mounting lets you install inboard or outboard depending on your setup.

What engines and vehicles will this Vashly clutch fit?

This clutch is made for a broad range of small gasoline engines from roughly 2 to 6.5 HP, including many 168/188 and Predator-type motors, and also works with smaller 97cc units for light minibikes. It’s intended for minibikes, small go karts, mini choppers, fun karts, generators, and garden tractors when paired with single-wheel drive.

• Compatible with 2–6.5 HP engines such as common 168/188 models and Predator derivatives.
• Works on minibikes, go karts, mini choppers, and single-wheel-drive builds.
• Not intended for heavy-duty or dual-wheel-drive racing setups.
• Verify shaft size and sprocket spacing before purchase for best fitment.

What comes in the box and how easy is installation?

The package includes the 5/8" bore 11T centrifugal clutch plus bolts, washers, and basic wrenches to secure it to the crankshaft. Installation is straightforward for anyone comfortable with small-engine maintenance: mount the clutch onto the crankshaft end, torque the supplied hardware, and align the chain and sprocket before final tightening.

• Included: 1 clutch (5/8" bore, 11T), 2 clutch bolts, 2 washers, and 2 screw wrenches.
• Metric property class 8.8 hardware supplied for secure mounting.
• Bi-directional mounting allows inward or outward orientation on the crank.
• Basic hand tools and shaft verification recommended prior to fitting.

How durable is the construction and what maintenance is recommended?

Vashly’s clutch is made from quality iron to balance durability, weight, and thermal performance. Regular inspection of the shoes, drum, sprocket teeth, and mounting hardware will extend service life; replace worn shoes or damaged sprockets and keep chain tensioned correctly.

• Iron construction offers wear resistance and improved heat dissipation.
• Inspect wear surfaces and replace components if uneven wear appears.
• Keep chain lubricated and tensioned to prevent premature sprocket or drum damage.
• Not supplied with chain—fit to #35 roller chain of correct pitch.

Who is this for: This Vashly 11T centrifugal clutch suits hobbyists and DIY mechanics building or repairing single-wheel-drive go karts, minibikes, mini choppers, or small utility engines who need a compact, reliable clutch that bolts onto common small-engine shafts. If you’re converting a Predator-style 212/168/188 engine or fitting a 97cc mini engine for recreational use and want an automatic-engaging drive component for tires up to approximately 15" tall, this unit is a practical, install-ready choice. Confirm your crankshaft diameter and drivetrain layout before ordering to ensure compatibility.