Wolf Tooth Components MK0 BSA Ceramic Bottom Bracket

Description

Engineered Beyond Limits

Wolf Tooth Components MK0 BSA Ceramic Bottom Brackets take performance to another level with aggressive machining, custom ceramic bearings, and intricately designed race sealing built to exacting specifications. This design saves you watts while proving durable enough for the most intense off-road racing, inclement conditions, and are fully serviceable.

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.

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.

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.

Features:

• Premium ceramic bearings with low-drag seals built to exacting specifications
• Adjustable-width sleeve fits 68–73 mm BSA bottom bracket shells
• 83 and 100mm width internal sleeves sold separately
• Best-in-class weather sealing protects bearings from water, mud, and debris
• Custom polymer spindle bushings eliminate creaking; MKØ version further reduces seal drag
• Compatible with 24 Shimano and 29 DUB spindle cranksets
• Installs and removes with standard 44-16 (24 mm) and 46-12 (DUB) spline tools
• Designed, machined, and assembled at Wolf Tooth in Minnesota, USA

Specs:

• Weights: 24 mm: 76 g / DUB: 82 g (complete BB assembly without spacers)
• Material – cups: 6061-T6 aluminum
• Material – shell: POM
• Material – seals: NBR, urethane
• Material – spindle bushings: POM
• Bearing balls: silicon nitride
• Bearing races: AISI 52100 chrome bearing steel, hardened to Rc 60–65 with ACOSUR-ZNA corrosion-resistant coating

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.