IRD Tenacity QB-40 JIS Bottom Bracket

C$160.00
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A top-tier cup-and-cone bottom bracket for the bearing connoisseurs of this world

Cup and cone bearings with polished races. Retro yes, but these balls are bigger than those in sealed cartridge bearings, so they will work longer and handle more load.

- JIS square taper interface
- CNC machined steel cups
- SS41 steel lockring
- Polished ball races on cups and axle
- 1/4”x 11 ball retainers
- 1.37 x 24tpi (English threading)
- For 68mm wide shells

Made in Japan

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