Vashly Go Kart Clutch 3/4in Bore 10-Tooth for #40/#41/420 Chain — Fits Predator 212, 2–6.5 HP

This clutch assembly pairs a robust iron housing with centrifugal shoes sized for 10 teeth and a 3/4" bore, supplied with bolts, washers and simple tools to mount on the end of a crankshaft. It suits small recreational vehicles such as go karts, minibikes, fun karts and mini choppers where the driven tire is 15" or smaller. The unit is designed for reliable engagement at rated RPM, abrasion resistance under regular loads, and straightforward installation for hobbyists and mechanics.

How does this clutch fit my engine and drive setup?

The VASHLY clutch fits engines with a 3/4" crank bore and is compatible with 2–6.5 HP engines running around 2300 RPM, including common Predator 212-style motors. It accepts #40, #41 and 420-sized chain on a 10-tooth sprocket and is intended for single-wheel drive configurations.

• 3/4" bore mounting for standard small engine cranks
• 10-tooth sprocket to match #40/#41/420 chain
• Works with 2–6.5 HP, ~2300 RPM gasoline engines
• Designed for single-wheel drive and tires up to 15" tall

What materials and performance can I expect from this clutch?

Constructed mainly from quality iron, the clutch housing balances strength and heat dissipation while keeping weight moderate. Centrifugal shoes engage progressively as engine speed rises, delivering usable torque for acceleration and hill climbs within its rated capacity without exotic materials or overbuilt mass.

• Iron housing for wear resistance and thermal conduction
• Centrifugal engagement for smooth power transfer at target RPM
• Durable finish to resist corrosion and abrasion in normal use
• Lightweight enough for hobby vehicle weight constraints

Is it easy to install and what hardware comes with the clutch?

Yes — the clutch ships with the metric bolt and washer kit plus two small wrenches to simplify installation on the crankshaft end. The unit can be mounted either inward or outward on the crankshaft and uses the included bolts to secure the hub; basic hand tools and a torque wrench are all you need for a reliable fit.

• Package includes clutch, 2 bolts, 2 washers, and 2 screw wrenches
• Bi-directional mount allows inward or outward mounting on crank
• Simple bolt-on installation to crankshaft end with provided hardware
• Check shaft fitment before purchase to ensure compatibility

How should I match this clutch to my kart’s drive components?

Match the clutch to a sprocket and chain rated for #40/#41/420 sizes and confirm final drive ratio so the engine stays near its working RPM range. Use tires 15" or smaller to avoid excessive load, and ensure chassis alignment to prevent premature wear.

• Use #40/#41/420 chain and a compatible 10T sprocket
• Keep tire diameter at or below 15" for correct engagement
• Verify engine RPM and load to avoid overstressing the clutch
• Maintain chain tension and alignment for longevity

Who is this for? This VASHLY 10-tooth centrifugal clutch is geared to DIY builders, kart hobbyists and small-vehicle mechanics who need a dependable, economical replacement or upgrade for single-wheel drive karts, minibikes, fun karts and mini choppers using small gas engines. It’s especially suitable when you require a 3/4" bore fitment, a 10T sprocket for #40/#41/420 chain, and a straightforward bolt-on installation with hardware included.