Megaflint Centrifugal Go-Kart Clutch Sprocket 10T — 3/4" Bore, 3/16" Keyway for #40/#41/420 Chain, Fits 2–6.5HP Engines

This clutch sprocket is built for DIY go-kart and small-engine projects that need a reliable centrifugal drive component. Machined for durability, the unit fits engines with a 3/4" bar shaft and 3/16" keyway and pairs with common 2–6.5 HP small engines — including a wide range of Predator and Honda models. It works with single-wheel belt direct-drive karts and belt-drive centrifugal clutch systems commonly used on 196–212cc and under engines.

What engines and power ratings will this clutch work with?

The Megaflint 10T clutch is intended for small gasoline engines in the 2–6.5 HP range and is commonly used on 196–212cc Predator-style motors and many Honda GX/GC series engines. It’s sized to match a 3/4" bore and 3/16" keyway, ensuring a secure fit on standard bar shafts.

• Compatible with 2–6.5 HP engines including Honda GC160, GC190, GX120, GX140, GX160, GX200.
• Works on Predator 196–212cc 2–7 HP belt-drive applications.
• Fits motors with 3/4" shafts and 3/16" keyways for proper torque transfer.

How does the 10-tooth sprocket affect drive ratio and performance?

A 10-tooth sprocket provides a balanced combination of acceleration and top speed for small karts and utility machines. It reduces initial wheel torque slightly compared with larger sprockets, which can help prevent wheel hop and make acceleration more controllable on compact frames.

• 10T delivers moderate final drive ratio suitable for lightweight go-karts.
• Pairs well with #40, #41, or 420 chain sizes for common aftermarket setups.
• Helps smooth engagement in centrifugal clutch systems for predictable starts.

Will this fit my centrifugal clutch and chain type?

This Megaflint clutch sprocket is made to work with #40, #41, and 420 roller chains used on many small vehicles and builders’ projects. It is compatible with heavy-duty centrifugal clutches designed for Predator-style belt drives and similar clutch housings.

• Designed specifically for #40/#41/420 chain widths and tooth profiles.
• Matches centrifugal clutch assemblies for 6.5 HP and smaller motors.
• Use with single-wheel belt direct-drive karts with tires up to 15" tall for appropriate gearing.

How do I install and maintain the Megaflint 3/4" bore clutch?

Installation requires aligning the 3/4" bore over the engine’s bar shaft and securing it with the 3/16" key for torque transfer; check for correct key seating and tighten any retaining hardware per engine specs. Routine inspection of chain tension, sprocket wear, and clutch engagement will extend service life and maintain safe performance.

• Slide onto a 3/4" shaft, align the 3/16" keyway, and torque retaining nut to manufacturer spec.
• Maintain correct chain tension and inspect sprocket teeth for wear regularly.
• Keep the clutch and mounting hardware clean and periodically check for play or loosening.

Who is this for: Builders, hobbyists, and light-duty vehicle owners who need a durable, drop-in centrifugal clutch sprocket for small engines. Ideal for home-built go-karts, mini-bikes, lawn-equipment conversions, and replacement parts for 2–6.5 HP engines where a 3/4" bore 10-tooth sprocket for #40/41/420 chain is required. Avoid use on oversized tires or high-horsepower applications beyond the listed engine compatibility.