SHIMANO - Bottom Bracket - Threaded - HOLLOWTECH II - 68/70 mm shell width
With reliable SHIMANO bearings and seals, the SHIMANO ULTEGRA bottom bracket has a long service life.
MODEL NO -SM-BBR60
Average weight - 77 g
Threaded BB shell width_70mm ✔
HOLLOWTECH II BB_Threaded BB type ✔
Small ball bearing ✔
Threaded BB shell width_68mm ✔