CeramicSpeed PF4130 Road and MTB Bottom Bracket Standard Bearing Run Accessories_Headphones Optimal airfoil shape reduces drag

Optimal airfoil shape reduces drag caused by stem and headset spacers with no increase in frontal area

providing superior durability

It’s great in extreme situations

1 in (105 mm)

climb the Dolomites in ROUVY or simply need a sweat session

CeramicSpeed PF4130 Road and MTB Bottom Bracket Standard Bearing Run Accessories_Headphones Optimal airfoil shape reduces dragThe PF4130 bottom bracket is Press Fit into 41mm diameter shells that are 86. 5mm wide and mate most cranks with a 30mm spindle to that standard. If you have a BB86 frame and want to install a 386EVO crank or Rotor 30mm crank, this is the kit you need. CeramicSpeed bearings are installed in cups. The Standard Bearing has ceramic CS balls and hardened steel races. The Coated Bearing has the same balls running on hardened steel races with a 3 micron