Moturo cylinder base gasket for various 47-49cc pocket bike dirt bikes

Moturo Cylinder Base Gasket for 47-49cc Pocket Bikes and Dirt Bikes

The Moturo cylinder base gasket for 49cc class pocket bikes and dirt bikes — a wear part that should be replaced every time the cylinder is removed on a two-stroke engine. Universal size, fits between the cylinder and crankcase, ready for installation.

The gasket sits between the cylinder base and the crankcase, providing a gas-tight seal against combustion gases and crankcase pressure. Universal size for common 49cc class pocket bike and dirt bike engines (47 to 49cc displacement). Once installed during a cylinder removal, always replace it — old gaskets lose their shape after exposure to heat and pressure and no longer seal reliably.

Can be replaced during a cylinder change in half an hour using a torque wrench and hex key set; tightening values should follow your bike's repair manual.

Cylinder base gasket for your pocket bike, made by Moturo.

Performance · Material · Specs

• Universal size for 49cc class two-stroke engines (47 to 49cc displacement)
• Fits between cylinder base and crankcase
• Wear part — once installed during a cylinder removal, always replace

Important notes – please read

Replacement/wear part not requiring approval; no registration required for replacement. 49cc class pocket bikes and dirt bikes are generally not street-legal.

Tools & Time Required

• Torque wrench
• Hex key set in common sizes
• Approximately half an hour for an experienced mechanic

Scope of Delivery

1 × cylinder base gasket. Not included: cylinder, bolts, tools.

Frequently Asked Questions

Does the gasket fit all 49cc pocket bikes?
Universal size for the 49cc class. Compare the outer dimensions and hole pattern with the photo on the product page before ordering.

Does the component need to be registered?
No. This replacement/wear part does not require registration; what matters are the correct dimensions, design, and proper installation.

Is one gasket enough for multiple cylinder changes?
No. Once removed, always use a new one.