This bottom bracket fits any Rotor/Shimano 24mm, or GXP (with included reducer) crank on a PF30 frame Extremely reliable and efficient bottom brackets with coated ceramic bearings, tight variances and industry-leading durability Reduced friction and better protection from nature`s elements Long lasting durability and extreme performance 68/73mm PF30 Shi 24mm or Sram GXP 24/22mm Alloy BlackUPC/EAN/GTIN: 735201953311