Bearing for quad. In this category you will find wheel bearings, crankshaft, fork, gearbox and all other general applications. Each bearing is referenced according to its standard and the dimensions are indicated: internal diameter, external and width as well as the type of bearing. Find in particular SKF bearings, stronger and of better quality. You will find on each product sheet the dimensions of the bearing and the models of scooter or 50cc with gearbox compatible with it. The bearings must be checked regularly and changed if necessary. All the bearings we offer are compatible with many brands.