Shimano Ultegra SM-BBR60 English Bottom Bracket Colour:Black And the whole thing is

And the whole thing is stored under your saddle and out of your way when you don't need it

About Shimano Acera CS-HG41 11-32 8 Speed CassetteShimano's CS-HG41 8 speed cassette offers a quality build and reliable shifting at an affordable price point

SRAM developed a narrower chain

Polycarbonate Micro Shell

Shimano Ultegra SM-BBR60 English Bottom Bracket Colour:Black And the whole thing isAbout Shimano Ultegra SM BBR60 English Bottom BracketWith reliable SHIMANO bearings and seals, the SHIMANO ULTEGRA bottom bracket has a long service life. FeaturesHollowtech II technology SpecificationsModel No: SM BBR60 Series: SHIMANO 105 R7000 Series Average weight: 77g HOLLOWTECH II Threaded bottom bracket type: Yes Threaded bottom bracket shell width 68mm: Yes Threaded bottom bracket shell width 70mm: Yes About ShimanoShimano is a Japanese