Set of 2 6003-2RS sealed bearings for scooters and ATVs These bearings are commonly used in many different applications including wheels, transmissions, gearboxes and various other GY6/QMB139 engine components 30 Day Warranty Description Set of 2 6003-2RS sealed bearings for scooters and ATVs. These bearings are commonly used in many different applications including wheels, transmissions, gearboxes and various other GY6/QMB139 engine components. 6003-2RS bearings are sometimes referred to as 6003RS bearings. They are double sealed, single-row, deep groove ball bearings. Extra light in weight, they feature a 17 mm bore size. Check your existing bearings for series numbers. They are usually etched directly onto the bearings. Specifications Diameter (Outer): 35 mm Diameter (Inner): 17 mm Width: 10 mm