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Enter B2B Wolf Tooth

Wolf Tooth Bottom Brackets set the bar for performance, weight, durability, and performance. The new MK0 Bottom Brackets group those best-in-class specs with a ceramic bearing. The sealing is especially important here. Where many ceramic bottom brackets are known for spinning without friction, they are not known for being durable. The MK0 Bottom Bracket eliminates that issue, with best-in-class sealing for never-ending performance. Like other MK0 items, these bottom brackets spent extra time in the CNC lathe to reduce weight with new, consistent aesthetics. Form has met function. This is the outcome.

  • Premium ceramic bearings with low drag seals are built to our exacting specifications
  • Adjustable-width sleeve fits 68mm - 73mm BSA bottom bracket shells
  • Best-in-class weather sealing protects bearings from water, mud, and debris
  • Custom polymer spindle bushings eliminate creaking and the unique MKØ version is modified for even lower seal drag
  • Compatible with 24, 29 DUB, and 30mm spindle cranksets
  • Installation and removal with standard 44-16 (24mm) and 46-12 (29mm DUB, 30mm) spline tools
  • Designed, machined, and assembled at Wolf Tooth in Minnesota, USA

Bottom brackets ship with the following shell and spindle spacers:

  • 2x 2.5mm shell spacers
  • 24mm spindle - 2x 0.5mm, 2x 1mm, 2mm, 3mm, 5mm spindle spacers
  • 29mm spindle - 2x 0.5mm, 2x 1mm, 3mm, 5mm, 7.5mm spindle spacers
  • 30mm spindle - 2x 0.5mm, 2x 1mm, 2mm, 3mm, 5mm spindle spacers

Compatibility

  • 68, 73, 83, and 100mm width BSA bottom bracket shells
  • Included adjustable-width internal sleeve fits 68-73mm width BSA bottom bracket shells
  • 83 and 100mm width internal sleeves are available for purchase as add-ons

Installation

  • Installation and removal with standard  44-16 (24mm) and 46-12 (29mm DUB, 30mm) spline bottom bracket tools

Tech Specs

Weights: 24 mm • 76 g | 29 mm • 82 g | 30 mm • 77 g (includes complete BB assembly without spacers)
Material: Cups: 6061-T6 Aluminum
Shell: POM
Seals: NBR, Urethane
Spindle bushings: POM
Bearing ball: Silicon Nitride
Bearing race: AISI 52100 chrome bearing steel hardened to Rc 60-65 with ACOSUR-ZNA corrosion resistant coating

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 www.P65Warnings.ca.gov.