ROTOR T4730 External Bottom Bracket - Black MTB Compared to the AS2 Pro

Compared to the AS2 Pro

Bottom Bracket Width: 121 mm

Paired with a robust padlock

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

The Muc-Off Tubeless Rim Tape is made from our own proprietary performance material with a pressure-sensitive adhesive to provide just the right amount of stretch whilst maintaining the durability and strength needed to create a lasting airtight seal

ROTOR T4730 External Bottom Bracket - Black MTB Compared to the AS2 ProThe 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.