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Bottom Bracket Shells

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Our selection of bottom bracket shells includes threaded, non-threaded, BB30, PF30, and 41 mm Press Fit in a variety of sizes and materials. They are machined in one operation. The threads, bores, and faces are as perfectly concentric, square, and parallel as can be manufactured on modern CNC equipment. There is no need for any pre-machining on the framebuilders' part before fabrication.

Important Information

  1. Our threaded bottom bracket shells are 1.37" x 24 threads per inch (also known as British Standard, ISO/English or BSA) or M47 x 1 mm (also know as T47). They are right and left threaded and are compatible with all modern bottom bracket spindles.
  2. Our PF30 bottom bracket shells are compatible with PF30 eccentric bottom bracket shells.
  3. Resources: Bottom Bracket OverviewBottom Bracket StandardsBottom Brackets 101T47 Tap, Guidelines for UseHow to Tap a T47 Bottom Bracket Shell

15 Item(s)

15 Item(s)