Shimano’s sleek redesign for the Ultegra SM-BBR60 Bottom Bracket is lighter and faster than before, making it the ideal choice for either your English- or Italian-threaded frame. The new SM-BBR60 is close to 15 grams lighter than its predecessor, and the new design has reduced rotational friction by roughly 50%. This new silky-smooth ride is courtesy of steel bearings and Shimano’s advanced sealing technologies.
Material: [cups] aluminum, [bearings] steel;
Shell Type: external;
Shell Width: 68 mm, 70 mm;
Threading: English, Italian;
Claimed Weight: 2.7oz (76g);
Manufacturer Warranty: 2 Years;
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