This is a Shimano SM-BBR60 Bottom Bracket Unit. ...
Weighing in at 77g, the SM-BBR60 Ultegra Bottom Bracket is 14 grams lighter than the 6700 bottom bracket offering professional level technology for the everyday cyclist.
cranks spinning buttery smooth with their 4, high-quality sealed cartridge bearings. Also includes anodized spacers, internal bearing spacer (approximately 49mm), and threaded cups. Uses a 36mm wrench for installation.
The Answer European Square Tapered Titanium Bottom Bracket ...
features a lightweight hollow titanium spindle enclosed by a carbon BB body and smooth rolling sealed bearings. This incredibly light JIS bottom bracket is available in multiple spindle length options but does ...