CeramicSpeed Ceramic Race Coated Bottom Bracket - PF30 to 24mm (Shimano)

The CeramicSpeed Ceramic Race Coated Bottom Bracket PF30 to 24mm (Shimano) bridges a PF30 frame shell to a 24mm spindle crank with bearings that are measurably faster than standard steel. Ceramic Grade 3 Silicon Nitride balls — reported to be 400% smoother, 128% harder, and 58% lighter than conventional steel balls — sit inside aluminum cups machined by Rotor in Spain and assembled at CeramicSpeed in Denmark. That combination of precision manufacturing and ceramic ball quality is what makes this a bearing system the professional peloton actively seeks out.

The PF30 standard uses a 46mm shell diameter, which allows the bearing cups to press directly into the frame without snap rings — a cleaner, more serviceable design than older press-fit standards. The cups here are aluminum, pressed into aluminum sleeves, keeping the assembly light and dimensionally consistent. Available in Black or Red, so it can sit quietly inside the frame or make a statement if your setup calls for it.

CeramicSpeed Ceramic Race Coated Bottom Bracket Specs at a Glance

• Compatibility: PF30 frame shell, 24mm spindle cranks (Shimano)
• Bearing material: Grade 3 Silicon Nitride ceramic balls in hardened steel races
• Cup material: Precision-machined aluminum
• Shell standard: PF30 (46mm diameter, 68mm width)
• Available colours: Black, Red