ProX main bearings and Seals

Complete set of the main bearings and seals required for a replacement.
ProX main bearings of absolute top quality!
Made in Japan out of the leading OEM factories for engine parts for many of the major motorcycle manufacturers, you can be sure that they meet the same specifications as your original stock part.
ProX main bearings and seals fit all OEM parts and aftermarket parts.

Main bearings are the bearings that are mounted in the engine block and hold the crankshaft in place. During an engine overhaul, they should always be replaced.