Ceramic BB42 OSBB (BB30 OSBB Shimano) Bottom Bracket Road

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Convert BB30 OSBB frame to accept Shimano 24mm

Features:
- Brand new designed CNC cups with lighter weight and more strength
- ABEC 7 standard alloy steel bearing races
- Grade 3 Si3N4 ceramic balls - highest precision in the market
- Pre-lubricated with HSC Ceramic Grease and sealed.
- Specially designed Nylon bearing retainer for more shock absorbing and less friction
- Light touch rubber seals - super smoothness

Weight:
- 91 g

Frame requirements:
- BB30 OSBB standard frame (bearings directly pressed into the frame) with shell ID 42mm, width 61mm
i.e. Specialized OSBB

Crank compatibility:
- 24mm spindle cranks, e.g. Shimano Dura Ace, Shimano Ultegra, Shimano 105, Shimano Tiagra, FSA etc.

Note: 2 x 3.5 mm spacers is required to build up the OSBB frame to 68mm in order to accept most of cranks. The 3.5mm spacers will come with the bottom bracket.

Learn more about the compatible pressfit installation tool

Learn more about the compatible bottom bracket removal tool