New standards meet old standards.

Your bottom bracket is toast and you're wasting way too much energy pushing past that telltale grind. This time around, go all-in on durability and friction-free functionality with a Rotor Press Fit 4624 Ceramic Bottom Bracket. Pairing precisely machined cups and silky smooth ceramic bearings, this bottom bracket is up to your high-watt challenge to keep the pedals turning efficiently for many miles to come.

• A bottom bracket for 46mm diameter PressFit shells and 24mm axles
• Silky smooth ceramic bearings for efficient pedal turns
• Silicone selas protect bearings from dirt and debris