Surly OD Enduro Bottom Bracket 73mm Regular English Black New Engineered for rugged riding, the Surly OD Enduro Bottom Bracket is the trusted choice for riders who demand consistent rotation and long-term reliability in English-threaded frames. Designed to fit a 73 mm BB shell with a 1.37 in inner diameter, this bottom bracket accommodates Surly OD cranksets with a precise, snag-free interface that stays true under tough trail conditions. Key compatibility and performance details BB/Frame Interface: English Shell Width: 73 mm Shell ID: 1.37 in Spindle Interface Type: Surly OD Type: Regular Color: Black Why choose the OD Enduro in real-world riding scenarios: on singletrack or bikepacking trips, the sealed bearings resist grit, and the standard 73 mm shell keeps installation straightforward across multiple frames. The black finish blends with most setups while resisting scuffs from rocks and trail debris. This bottom bracket is ideal for riders upgrading a worn unit or building a bike around a Surly OD crankset, delivering crisp engagement and dependable service on every ride. Regular-width, easy maintenance, and a robust build make it a practical upgrade for daily riders and weekend adventurers alike. Bottom Bracket Shell I.D. 1.37 BB/Frame Interface English BB Shell Width (mm) 73 Spindle Interface Type Surly OD Defined Color Black Type Regular Size 73Mm
