Moturo Racing clutch - water-cooled 37cc Pocket Bike ATV Quad Dirt Bike

Moturo racing clutch 75 mm for pocket bikes, ATVs, quads, and dirt bikes

The Moturo racing clutch for 37-49cc pocket bikes, ATVs, quads, and dirt bikes — tuning clutch with two adjustable springs for a custom engagement point. 75 mm outer diameter, ready for installation.

The racing clutch is located between the crankshaft and the drive and transfers the engine torque. Two aluminum shoes engage via centrifugal force; the inner cone measures approx. 11.6 mm.

The tension on both springs is adjustable — allowing you to determine the RPM at which the clutch engages.

Replacement takes about an hour with a hex key set and a socket wrench for the shaft nut.

Racing clutch for pocket bikes, ATVs, quads, and dirt bikes, manufactured by Moturo.

Performance · Material · Specifications

• Two aluminum shoes, spring tension adjustable on both springs
• Outer diameter approx. 75 mm, inner cone approx. 11.6 mm
• Engagement speed individually adjustable via spring preload
• Fits pocket bikes, ATVs, quads, and dirt bikes with 37-49cc displacement

Important notes – please read

Component for racing and off-road use. No ABE/road legal certification. Not for use on public roads. Universal item — check shaft diameter, inner cone (approx. 11.6 mm), and bolt pattern against the original before ordering.

Tools & time required

• Hex key set in common sizes
• Socket wrench for the shaft nut
• Torque wrench
• About one hour for an experienced mechanic

Scope of delivery

1 × Moturo racing clutch with two shoes and adjustable springs. Not included: shaft nut, locking elements, tools.

Frequently asked questions

Does the clutch fit every pocket bike?
No. Check shaft diameter and inner cone (approx. 11.6 mm) against the original before ordering.

Are the springs pre-assembled?
Yes. The tension on both springs can be adjusted subsequently — tighter for a later engagement point, softer for an earlier start.

Do I need a registration?
No. Use is restricted to racing and off-road, not for public road traffic.