Cometic: gaskets and sealing for your motorcycle

Cometic develops gaskets and sealing solutions for motorcycle and ATV engines. Its Powersports range covers road and off-road applications. Each part number corresponds to a specific joint and configuration: the gasket shape, internal passages and material must suit the component you are repairing.

A brand born in the powersports world

Cometic started in 1989 with four partners, including Bob Gorman, and an initial focus on the powersports sector. From those beginnings, it developed its specialism in gaskets and engine sealing. The brand's history helps explain the breadth of its range: alongside rebuild sets, there are gaskets for specific joints and areas of the engine.

This specialism does not remove the differences between part numbers. A base gasket, intake gasket, oil seal and multilayer head gasket face different operating conditions. The applicable material, thickness and contents are always those documented for the selected part.

At Motarea, you can access the brand’s main gasket and oil seal families directly. Start by identifying the area you will dismantle, then check fitment and the contents of your chosen part number. A similar photograph does not guarantee that two parts are interchangeable.

Complete kits, top end and cylinder head

Complete engine gasket kits bring together components for extensive work. Top end gasket kits focus on that area of the engine. Check the detailed contents of each kit before ordering: the family name alone does not confirm that it includes every oil seal, O-ring or item needed for your repair.

For head gaskets, pay particular attention to diameter, thickness and alignment with passages and fasteners. Cometic offers multi-layer steel MLS head gaskets. This construction should not be attributed to the entire range; the applicable material and specifications are those of the individual part number.

Covers, clutch and primary drive

Valve cover gaskets, clutch gaskets and primary drive gaskets seal different joints. Identify the exact cover and housing before choosing. Compare the outline, bolt pattern and required passages, as well as the installation instructions and included components.

Gaskets are also available for other engine areas. Browse the Cometic gaskets category to find options for the cylinder base, bottom end, intake, cooling or ignition. Avoid replacing a gasket with one of a similar shape unless its application has been confirmed.

Oil seals, exhaust and installation preparation

Oil seals require you to check the shaft, housing, dimensions and installation position. Exhaust gaskets correspond to their specific joints; check the geometry and fastening system. Always confirm the complete application as well as the part’s dimensions.

Before installation, inspect the mating surfaces and follow the cleaning, tightening and sealant instructions specified for the gasket and vehicle. Check which items need to be renewed alongside it and keep the application’s technical procedure available as a reference throughout the repair.