Custom bearings and high performance seals in all e*thirteen bottom brackets deliver supreme durability and smooth spinning.
Available for cranks with either 30mm spindle (Race and Plus cranks) or 24mm spindle (Base cranks). Available for frames with 68mm, 73mm, 83mm and 100mm threaded BB shells. Gravel BB fits 68mm BSA shells with no spacers for road fit.
All Bottom Brackets include our 1 year, no questions asked guarantee.