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Wolf Tooth bottom bracket sockets are high-quality CNC machined tools for installation and removal of external cup bottom brackets.

  • Large finger notches so you can start threading the cups by hand

  • 3/8" square socket or 1-inch hex for ratchet/torque wrench

  • Each socket has either a Shimano bearing preload tool or a 16mm hex for use with Race Face Cinch cranksets

  • Steel inserts for magnetic coupling compatibility with the Pack Wrench



  • BBS3916: 16 notch BB socket for 39mm diameter notch pattern, XTR/Dura Ace
  • BBS4116: 16 notch BB socket for 41mm diameter notch pattern, Ultegra BBR60
  • BBS4416: 16 notch BB socket for 44mm diameter notch pattern, Hollowtech II, Campagnolo, Chris King, FSA MegaExo, Hope, SRAM/Truvativ GXP, Race Face X-type, Surly, Wheels, and others
  • BBS4612: 12 notch BB socket for 46mm diameter notch pattern, Race Face 30mm Spindle, TF47, SRAM DUB, RaceFace Cinch, Zipp Vuma, Rotor BSA30, Hawk Racing BB3086
  • BBS4816: 16 notch BB socket for 48mm diameter notch pattern, FSA 386 MegaEvo, Wheels® PF30


    Related Products

    Pack Wrench
    1" hex inserts
    Travel Tool Wrap
    Pack Tool

      Tech Specs

      Weight:  BBS3916 • 69g  |  BBS4116 •  69g  |  BBS4416 •  71g  |  BBS4612 • 78g  BBS4816 • 80g
        Material: 7075-T6 aluminum

          Made in the USA

            WARNING Handling this product will expose you to chemicals, including lead, known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For further information go to​

          Patent and trademark information