ROTOR T4730 External Bottom Bracket - Black MTB We know that comfort and

We know that comfort and efficiency translate to better rides so every feature of this helmet was considered including: eyewear grippers

Compared to the AS2 Pro

XL:175mm Bottom Bracket Shimano

Bottom Bracket Width: 121 mm

The ultimate competition design for cross-country riders - when speed counts

ROTOR T4730 External Bottom Bracket - Black MTB We know that comfort andThe Rotor T47 bottom bracket is made of CNC machined aluminum 7075 and features steel bearings as well as silicone seals. The T4730 model fits Rotor cranksets with 30 mm axle. In the External version, the bottom bracket is compatible with 68 mm road and 73 mm MTB frames.