Dirt Bike Top End Kits

Dirt bike top end kits contain the components needed to rebuild the upper portion of the engine, typically including a piston, rings, wrist pin, circlips, and often a cylinder or cylinder sleeve. These kits are used when the engine has reached the end of its piston service interval or when wear has been identified during inspection.

Kit fitment is specific to the dirt bike make, model, year, and engine displacement. Some kits are sold at standard bore size while others are offered in oversize configurations for use when the cylinder has been bored out during the rebuild.