QYMOTO 16mm Bore 10-Tooth Centrifugal Clutch for Coleman CT200U / Axis 200 — Fits 16mm Keyed Shaft, 40/41/420 Chain, 2–6.5 HP

QYMOTO 16mm bore 10-tooth centrifugal clutch designed to replace worn clutches on Coleman CT200U, CT200U-EX and Axis 200 mini bikes — not compatible with 3/4" or 5/8" shaft bore models.

This replacement centrifugal clutch fits engines and drivetrains that use a 16mm straight keyed shaft with a built-in 3/16" keyway and a 40/41/420 chain clutch system. It delivers a direct, bolt-on replacement for 2–6.5 HP engines on popular small off-road platforms such as Coleman CT200U, CT200U-EX, Axis 200 and KT196 go-karts. Before ordering, confirm your crankshaft diameter and keyway configuration; this unit will not fit models with 3/4" or 5/8" bores.

How do I confirm this clutch fits my mini bike or go-kart?

Measure the diameter of your engine output shaft and check for a 3/16" keyway slot. This clutch requires a 16mm straight keyed shaft; it is not compatible with 3/4" or 5/8" bores. If your measurements match, the clutch will align with standard 40/41/420 chain setups.

• Required shaft: 16mm straight keyed with 3/16" keyway
• Chain systems supported: 40, 41, 420
• Not compatible with: 3/4" or 5/8" bore CT200U models
• Compatible engines: 2–6.5 HP range

What should I do before installing the QYMOTO clutch?

Prepare the clutch by adding oil to the internal mechanism as the manufacturer advises; this ensures proper lubrication on first use. Also clean the crankshaft and keyway, verify alignment with the sprocket, and tighten mounting hardware to the engine's torque specs to avoid slippage or premature wear.

• Pre-fill clutch with oil before first operation
• Clean shaft and keyway of debris and corrosion
• Align sprocket and chain tension correctly
• Torque mounting fasteners according to engine manual

What performance can I expect from a 10-tooth centrifugal clutch?

A 10-tooth centrifugal design engages smoothly as engine RPM increases, transmitting power from 2–6.5 HP engines to the drive chain. It is built for common mini bike and small go-kart use, offering reliable engagement and simple maintenance when matched to the correct shaft size and chain type.

• Smoother engagement at idle-to-throttle transitions
• Designed for 40/41/420 chain drive configurations
• Durable tooth profile for routine recreational use
• Simple replacement process for like-for-like clutches

How long will this clutch last and what maintenance does it need?

Longevity depends on riding conditions, maintenance, and correct installation. Regularly check oil level (if applicable), sprocket alignment, chain tension, and remove debris; replace if tooth wear or excessive wobble develops. Properly installed and maintained, it will provide consistent performance for typical recreational use.

• Inspect chain and sprocket every few rides
• Top up or change oil per initial lubrication guidance
• Replace if teeth are visibly worn or clutch shows vibration
• Keep mounting hardware tight and keyed shaft clean

Who is this for: This QYMOTO 10-tooth centrifugal clutch is intended for owners, mechanics, and DIY enthusiasts who maintain Coleman CT200U, CT200U-EX, Axis 200, KT196 go-karts and similar small-engine platforms that use a 16mm straight keyed shaft. It suits riders seeking a straightforward replacement clutch compatible with 40/41/420 chain systems — provided your engine output shaft is the specified 16mm with a 3/16" keyway. If your model has a 3/4" or 5/8" bore, choose a different clutch size to ensure safe, reliable operation.

• Package includes: 1 x 10-tooth centrifugal clutch
• Important note: Verify shaft size before ordering