Riders with a BB30 frame who want to run SRAM GXP cranks, or who are sick of a creaking press-fit bottom bracket.
Press-in BB30 bearings are known for creaking. The Wheels Manufacturing BB30 Outboard fixes that by using two machined aluminium cups that thread together inside the shell, clamping the frame and keeping the bearings perfectly aligned.
It is made for 24/22 mm stepped spindle cranks such as SRAM and Truvativ GXP, and fits BB30 frames (42 mm inner diameter) from 68 to 73 mm wide, plus Specialized alloy OSBB frames. No adapters needed.
Inside are Enduro ABEC-3 sealed bearings with silicone dust shields. At 148 g it is light, and because the cups unthread, future bearing swaps are quick and painless.
No adapters
GXP cranks straight into a BB30 frame.
Thread-together
Cups clamp the shell, killing creaks.
Enduro ABEC-3
Quality sealed bearings, easy to replace.
148 g
Machined aluminium, black finish.
Fit
Construction
Tools
Thread-together cups
The two cups screw into each other through the shell, holding the bearings square and tight. That means no creaks and much longer bearing life than pressed-in bearings.
Enduro bearings
Quality ABEC-3 sealed cartridge bearings that are quick to replace when they eventually wear.
Great for
Maybe not for
Your frame must be BB30: a 42 mm unthreaded bore with bearings pressed directly into the frame, 68 to 73 mm wide. PF30 frames have a larger 46 mm bore and need the PF30 version.
Confirm the frame first
BB30 and PF30 look similar. Remove the old bearings and measure the bore: 42 mm is BB30, 46 mm is PF30. Clean the shell well, grease the cup faces, and tighten both cups with 44 mm 16-notch wrenches. We can fit it for you if you do not have the tools.
Bottom bracket specialists.
Wheels Manufacturing is a US company based in Colorado, known for its bottom brackets, adapters and bearing tools for almost every frame and crank standard.
