Shimano Deore SM-BB51 Hollowtech II Bottom Bracket Set includes left and right hand cups, spacers, inner cover, and inner O-rings. Sealed cups keep out dirt and water. Maintenance free. Compatible with 68 mm and 73 mm shell. Durable silver anodised finish. Easy installation. About Shimano Brand. Shimano is the largest manufacturer of cycle components, Shimano is the world’s most well known cycle component brand. Shimano was started back in January 1940. Shimano have been providing attractive products with a focus on cycling and fishing, the most popular outdoor sports. Shimano product sales constitute 50% of the global bicycle component market. Its products include drivetrain, brake, wheel and pedal components for road, mountain, and hybrid bikes. The components include: crankset comprising cranks and chainrings; bottom bracket; chain; rear chain sprockets or cassette; front and rear wheel hubs; gear shift levers; brakes; brake levers; cables; front and rear gear mechanisms or derailleurs. Shimano Total Integration (STI) is Shimano’s integrated shifter and brake lever combination for road bicycles. Shimano produce nearly all the cycle components and accessories you can think of! Shimano
