SHIMANO BB-RS501 Hollowtech II English Bottom Bracket sirrus x R5 is the bike for

R5 is the bike for big days in the high mountains of the Tour de France

Mounts onto bar end of handle bar

Weight is 1

Nickel-plated finish offers hard wearing resistance to corrosion

0 700x29c Max Tire Width 34mm

SHIMANO BB-RS501 Hollowtech II English Bottom Bracket sirrus x R5 is the bike forThe BB RS501 bottom bracket features an enhanced seal construction to provide long lasting performance and service life. For use with English thread bottom bracket frames. Designed for a perfect fit with Hollowtech II 24mm crank spindles . Anodized aluminum cups are high strength and light weight. Item Specifications: Bottom Bracket Shell I. D.: 1. 37, BB Frame Interface: English, BB Shell Width (mm): 68, Weight: 93, Spindle Interface Type: Hollowtech