CAMPAGNOLO EKAR PRO-TECH BB386 86.5x46mm STURMEY ARCHER SHIMANO Equivalent BL-R550 / BL-3500

SHIMANO Equivalent BL-R550 / BL-3500

Laser etched logo with CNC machined silver detail

E-Bike compatible 7/8 speed chain with Diamond Hard Coating which reduces wear and increases surface hardness

Intended for XC

Dual pad adjustment

CAMPAGNOLO EKAR PRO-TECH BB386 86.5x46mm STURMEY ARCHER SHIMANO Equivalent BL-R550 / BL-3500New patented external ring seal paired with an internal sleeve seal protects bearings from water and contaminants Provides extremely efficient and smooth function as well as long lasting reliability Mates with the external stainless steel bearings which are attached to the crank arms as an integral unit rather than the BB cups for greater size and easier maintenance access Available in multiple threaded and pressfit options Bearings sold separately