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Bio-Centric EBB
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BioCentric EBB gives precise chain tensioning and clean singlespeed setup for compatible Niner frames
What Our Gearhead® Experts Are Saying:
“This is the go-to EBB if you’re running a singlespeed Niner. It installs clean, holds tension reliably, and stays quiet once dialed. Just confirm your shell spec—55mm diameter and 68mm width—and you’re good to go. A great spare to have on hand if you swap gearing or travel with your bike.”
The Niner BioCentric EBB keeps our singlespeed dialed by offering consistent, hassle-free chain tensioning that stays quiet and stable on long miles. Built for frames with 55mm x 68mm EBB shells, it’s a simple, precise upgrade or replacement for riders who prefer the clean efficiency of a geared-down setup. Easy adjustments let us fine-tune tension for different conditions or gearing choices, while the secure interface stays put through hard climbs and rocky washboards. Whether we’re refreshing a well-ridden frame or stocking a spare for the tool bin, the BioCentric II keeps the ride smooth and the drivetrain simple.
Details
- Fits frames with 55mm diameter and 68mm width EBB shells
- Provides clean and reliable chain tensioning for singlespeed setups
- Ideal as a replacement part or spare for compatible Niner frames
- Simple installation and adjustment for gearing fine-tuning
- Durable construction ensures long-term stability and quiet performance
- Item #NNR0001
- Material
- aluminum alloy
- Shell Type
- BB
- Shell Width
- 68mm
- Crankset Compatibility
- Niner EBB frames
- Activity
- mountain biking
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For over 20 years, Niner Bikes has been pushing the boundaries and bucking the mainstream. Niner Bikes is 100% committed to impeccable designs & exquisite ride quality.