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Wolf Tooth bottom bracket sockets are tools for installation and removal of external cup bottom brackets. They are machined here in Minnesota with 7075-T6 aluminum.

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

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

  • Most sockets have 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

Bottom Bracket Socket Tool Features



Bottom Bracket measurement guide

  • BBS3916: 16 notch BB socket for 39mm diameter notch pattern, Shimano 9000 series, DURA-ACE, BB92, XTR BB93
  • BBS4116: 16 notch BB socket for 41mm diameter notch pattern, Shimano 105, Ultegra BBR60 and 6800, XT MT-800
  • BBS4416: 16 notch BB socket for 44mm diameter notch pattern, Shimano BB80, BB5700, BB70, BB51, Enduro T47, Wheels T47, many from Hollowtech II, Campagnolo, Chris King, FSA MegaExo, Hope, SRAM/Truvativ GXP, Race Face X-type, Surly, and more
  • BBS4612: 12 notch BB socket for 46mm diameter notch pattern, BB386, Race Face 30mm Spindle, TF47, SRAM DUB, RaceFace Cinch, Zipp Vuma, Rotor BSA30, Hawk Racing BB3086, Cane Creek Hellbender, and more. 
  • BBS4816: 16 notch BB socket for 48mm diameter notch pattern, FSA 386 MegaEvo, Wheels PF30, BSA30, BB386, and more
  • BBS4912: 12 notch BB socket for Praxis T47IB
  • BBS5212: 12 notch BB socket for Chris King T47
  • BBS5216: 16 notch BB socket for DUB T47 

Wolf Tooth Bottom Bracket Socket Compatibility Chart


    Related Products

    Pack Wrench
    1" hex inserts
    Travel Tool Wrap
    Pack Tool

      Tech Specs

      Weight:  BBS3916 • 73g  |  BBS4116 •  70g  |  BBS4416 •  74g  |  BBS4612 • 78g  BBS4816 • 79g  |  BBS4912 •  66g   |  BBS5212 •  83g   |  BBS5216 •  85g
        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