MK0 BSA Ceramic Bottom Bracket
WBB-BSA-24-MK0-SGR
MarkZero Ceramic Bottom Brackets
MK0 Bottom Brackets take performance to another level with aggressive machining, custom ceramic bearings, and intricately designed race sealing built to our exacting specifications. This design saves you watts while proving durable enough for the most intense off-road racing, inclement conditions, and are fully serviceable.
MK0 components are proudly machined at Wolf Tooth HQ in Minnesota, USA.
No Compromise
Durability and ceramic bearings haven't always gone hand-in-hand. Where many ceramic bottom brackets are known for spinning with low friction, they're not known for making it through even a few months of riding in harsh conditions. Our MK0 ceramic bearings feature custom race sealing for flawless performance against the elements and endless speed.
Built To Endure
Custom bushings separate the bearing inner race and crank spindle to eliminate metal-on-metal contact, the leading cause of bottom bracket creaks. This bushing also helps enhance bearing longevity with an interface to the bearing gutter seal for maximum weatherproofing. No metal-on-metal contact, no creaks.
Two years in the making, MK0 components were designed to balance extreme performance with stunning aesthetics. The collection is available in Shadow Gray to compliment any bike, and features extensive machining and exotic materials for weight reduction and enhanced performance.
Wicked Light
It all adds up. Aggressively machined to be lighter than the competition while offering superior speed and performance in all conditions. Win-win.
Installs With Standard Tools
No proprietary tools required. Wolf Tooth MK0 BSA Bottom Brackets use standard spline tools. Use our precision Bottom Bracket Tools, or your existing 44-16 (24mm) or 46-12 (29mm DUB, 30mm) tools.
Adjustable-Width Shell
Our adjustable-width design allows the same BB shell to be used for 68mm - 73mm width BSA Bottom Brackets. 83mm DH shells and 100mm Fat Bike shells are available as add-ons for our BSA Bottom Brackets.
Designed and Machined In-House
Wolf Tooth MK0 Bottom Brackets are designed and engineered in-house from the ground up to be the best available option for any style of riding and every adventure.
We believe in your right to be able to fix your components. Crashes happen, parts get misplaced, things go bump in the night. Replacement parts are available.
100% USER SERVICEABLE
Replacing your bottom bracket bearings can be done at home with a few tools. We’ll even show you how to do it with video and text service guides.
REPLACEMENT PARTS AVAILABLE
Our bottom brackets are rebuildable. Bearings, bushings, and o-rings are available to service your Wolf Tooth Bottom bracket.
INSTALLATION INSTRUCTIONS
An owner’s manual and visual guide are available so you can install your Wolf Tooth Bottom Bracket and find the correct spacer configuration for your frame.
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.