KRGUOD Centrifugal Clutch 3/4in Bore 10T Sprocket with #40/41/420 Chain — 96-Link Kit, Fits 2–6.5HP Engines

KRGUOD centrifugal clutch with a 3/4" bore and 10-tooth sprocket delivers reliable automatic engagement for small engines used in go karts, minibikes, and lawn equipment.

This clutch assembly is built to fit engines with a 3/4" crankshaft and 3/16" keyway, making it compatible with many Honda-clone, Briggs & Stratton, Tecumseh, and Predator-style engines in the 2–6.5 HP range. It ships complete with a 10-tooth sprocket sized for #40/41/420 chain, a full-length chain (96 links) that can be shortened with the included connecting link, and the necessary mounting hardware and wrench so you can install it quickly.

Will this clutch fit my engine and crankshaft?

Check your engine specifications for a 3/4" (0.750") crankshaft diameter and a 3/16" keyway. This KRGUOD clutch is commonly used on small horizontal shaft engines including Predator 212-style clones and many Honda GC/GX series clones listed in the product details.

• Fits 3/4" crankshafts with 3/16" keyway
• Compatible with 2–6.5 HP engines running near 2300 RPM
• Works with Honda GC/GX clones, Briggs & Stratton equivalents, Tecumseh, and Predator 212-style engines

How does the clutch engage and what load can it handle?

This is a centrifugal clutch: it engages automatically as engine RPM rises, transferring power to the sprocket and chain without a manual lever. It’s designed for light recreational and utility applications up to about 6.6 HP under normal operating conditions.

• Automatic engagement based on engine RPM
• Designed for small engines commonly used on go karts and minibikes
• 10-tooth sprocket matched to #40/41/420 chain for efficient power transfer

What comes in the package and what tools are included?

The kit arrives as a ready-to-install assembly with the key parts and basic tools to simplify setup. Verify your crankshaft size before ordering to ensure fitment.

• 1 x 3/4" bore, 10-tooth centrifugal clutch
• 1 x #40/41/420 chain (96 links, adjustable length)
• 1 x clutch bolt, 1 x washer kit, 1 x installation wrench
• Basic mounting hardware included for immediate installation

How do I use the included chain and adjust its length?

The #420-series chain has 96 links and can be shortened using the connecting link supplied. Measure chain wrap and required tension, then remove excess links and secure the connecting link for a safe fit.

• 96 total links; shorten by removing links
• Use the connecting link to rejoin chain ends securely
• Avoid over-tightening; allow slight slack for suspension movement

Who is this for: This KRGUOD centrifugal clutch kit is aimed at hobbyists, DIY mechanics, and small-vehicle builders restoring or upgrading go karts, minibikes (MB165/MB200 style), Baja clones, small garden machines, or any project that uses a 3/4" crankshaft engine in the 2–6.5 HP range. It suits users who want a straightforward, bolt-on clutch and chain kit with basic installation tools included. If you need exact fitment, measure your crankshaft diameter and keyway before purchase; contact seller support for further compatibility questions.