CeramicSpeed PF30 Bottom Bracket for Shimano Road Black Standard Bearing Shimano Ultegra The Shimano SH51 SPD Cleats

The Shimano SH51 SPD Cleats offer four degrees of float

– Minimum Seat Tube Length: 4

Reduces drag by 50%

it offers state-of-the-art technology for full power transfer

rider-tuned gearing with wide gear choices

CeramicSpeed PF30 Bottom Bracket for Shimano Road Black Standard Bearing Shimano Ultegra The Shimano SH51 SPD CleatsThe PF30 standard is widely used. To make it compatible with Shimano and other 24mm diameter thru axle cranks, as well as improve the system, select this bottom bracket. The package comes with two cups and CeramicSpeed Bearings installed. There are two options. Both Standard and Coated Bearings feature super smooth CeramicSpeed Balls and hardened steel races. The CeramicSpeed Coated Bearings have an additional feature: a 3 micron thick metallic layer