CeramicSpeed Bottom Bracket – T47/68 (External)

Performance & Use Case
The CeramicSpeed T47/68 External Bottom Bracket combines the oversized stiffness benefits of PF30 and EVO386 with the secure, creak-free reliability of a threaded interface. Originally developed by custom frame builders, the T47 standard features a 47mm inner diameter and threaded cups for secure installation and long-term performance. The outboard bearing position is ideal for road, gravel and cyclocross bikes built around the T47/68 standard.

Construction & Materials
Each kit includes precision-machined cups with CeramicSpeed bearings pre-installed. Ultra-smooth, perfectly round CeramicSpeed balls run on hardened-steel races for low friction and long-lasting performance. Coated bearing options gain CeramicSpeed’s 3-micron metallic surface treatment – races harder than steel, with reduced drag and extended bearing life over uncoated alternatives.

Compatibility
Fits any frameset with a 68mm T47 outboard threaded shell. Three spindle-compatibility options: Shimano (24mm, coated), SRAM DUB (28.99mm, uncoated) and Campagnolo Ultra-Torque (25mm, coated). Installation requires a BBT-69 tool. Select the variant that matches your crankset.