Motocross/Dirt Bike Crankshafts & Components

High jumps, hard impacts, riding in the mud, and sudden and strong acceleration are peculiar to many motocross competitions. However, motocross off-roading is a challenging sport both for the biker and motorcycle, and both are required to be in top shape. The engine is the very core of the two-wheeler. Most motocross and dirt bikes are equipped with two-stroke motors whose simple architecture and outstanding power are perfect to cope with challenging routes successfully. The crankshaft is one of the most crucial components of the engine.

The reciprocating motion of pistons initiated by the combustion process is transferred to the crankshaft via connecting rods and converted into the rotating motion that ultimately pushes the bike forward. The unique shape of the crankshaft is also one of the main reasons for its failure: even a small misalignment can prevent the engine to work properly. Excessive loads, insufficient lubrication, and wear are the main cause of misalignment, while cracks are rare. If you need to replace the crankshaft, we have a large choice of top-notch motocross/dirt bike crankshafts and components including bearings and seals.