SRAM
DUB PF121
The SRAM DUB PF121 bottom bracket brings the durability and simplicity of DUB™ technology to fat bikes using a PF121 shell. With a wider, stiffer interface and improved sealing, it delivers smooth performance and long‑lasting protection against dirt, water, and winter conditions.
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PressFit bottom bracket for PF121 fat bike frames
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Designed for all SRAM DUB cranks with a 28.99 mm spindle
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121 mm shell width with 41 mm cup diameter
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Durable steel bearings for consistent performance
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Enhanced sealing to protect against contamination
Shipping information
Ships in 2–3 business days with free delivery across Canada on orders over $99. Same‑day pickup available Tue–Sat (closed Sun–Mon).
Returns & warranty
Enjoy hassle‑free returns within 30 days on unused items in original packaging (excludes bikes and sale items). Free in‑store returns anytime.