WHEELS Mfg Eccentric Bottom Bracket
Best reliable solution for quiet single speed conversions on PF30 frames.
This is the smartest way to convert a modern press-fit frame into a single-speed rig without needing a dedicated chassis. By swapping plastic for machined aluminum and serviceable bearings, you gain the precise chain tensioning usually reserved for custom frames, though you do trade a bit of installation simplicity for that mechanical versatility.
$205.00
at
Wheels Manufacturing
Who it's for
- Single-speed cyclists needing precise chain tensioning.
- Riders wanting to use 24/22mm cranks on PF30 frames.
- Cyclists seeking trusted, well-engineered bicycle components.
Who should skip it
- Riders sensitive to drivetrain noise.
- DIY mechanics without specialized tools or experience.
- Weight-conscious performance cyclists.
Performance breakdown
Conversion Versatility
Seamlessly transforms standard press-fit frames into capable single-speed setups.
Build Integrity
Machined aluminum construction offers significant durability over standard plastic alternatives.
Bearing Performance
Enduro angular contact bearings provide exceptionally smooth, reliable rotation.
Maintenance Accessibility
Fully serviceable design allows for straightforward, long-term component upkeep.
Environmental Protection
Double-lip seals effectively shield internal components from grit and moisture.
Adjustment Precision
Offers 12mm of travel for precise, reliable chain tensioning.
Key Specs
Bearings
Enduro Angular Contact
Color
Black
Bottom Bracket/Frame Interface
PF30, Specialized Carbon OSBB
Bottom Bracket Shell Width
68mm - 73mm
Bottom Bracket Shell I.D.
46mm
Chain Adjustment
12mm
Crank Spindle Type
GXP
Crank Spindle Diameter
22/24mm
Weight
153g
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