IRD ScramJet BB T47 Self-Cleaning 24/30mm In/outboard

A supremely adjustable bottom bracket in the T47 threaded standard.
Fits both 24mm and 30mm spindles, 68 -100mm BB shells, and  works as an external bearing, outboard bearing and asymmetric bottom bracket. (Not for SRAM Dub (29mm) or GXP (22/24mm)

– Precision machined and finished aluminum cups, spacers, and washers.
– Telescoping sleeve is aluminum, not plastic
– Hybrid ceramic sealed cartridge bearing: one ceramic ball in a cartridge with stainless steel balls. The harder ceramic grinds down any debris that might enter the bearing. The less brittle steel balls keep things rolling smoothly.
– Bearings sit inside the BB shell when cups are installed.
– Bearings have plastic shields on the outside.
– Includes wave washers and spacers for 24mm and 30mm use
– In anodized black with red sleeve or high-polished silver with black sleeve