Replacement for BB-ES25, now 25g lighter
Tubular 22mm spindle for Octalink V2 crank arms
More rigid assembly than square taper
Sealed cartridge bearings
Mounting bolts not included
The RC1 offers advanced technologies at an affordable price. Its precise, foot-hugging fit and stiff sole make pedaling more efficient, while it's wrap-around upper provide superior comfort.
Compatible with EW-SD50 Di2 Wire
Capacity: 500 mAH (± 2000km)
Use with EW-WU101 or SC-MT800 interfaces/junction to gain BlueTooth Smart wireless connectivity for on-the-fly adjustments with smartphones and tablets
Lining material: Resin (5th generation)
Less noise and better modulation
New resin friction material
50% better wear resistance than B03S
110% better wear resistance than B01S
