Grambo

I will be running a GXP crankset in a Specialized OSBB and had a couple of quick questions. It seems I have two options that will allow me to run GXP. First is the Wheels Manufacturer delrin adaptor cups which I believe press into the OSBB cartridge bearings to reduce the internal diameters to match the GXP crank. Second option is to just use a Praxis BB specifically designed for this adaptation. Have heard good things about the Praxis BB and was leaning in that direction but was just curious if anyone has experience with both and what they would recommend. I'm a little worried about the press in Wheel Manufacturer's adaptors given it seems like a recipe for creaking. BTW the GXP is a Quarq power meter so I have a fair amount of money tied up in it and replacing it with a 30mm spindle power meter is not an option at this time.

topflightpro

I used WM adapters in my Cannondale with a GXP crank. It worked fine. There is nothing in that set up that will creak. Any creaking would come from the bearings in the frame.

If you already have bearings in your Specialized frame, you might as well go with the WM adapters. They are cheap and easy to do yourself.

brian416

I have the wheels manufacturing adapters on my bike with a GXP Quarq. Several thousand miles and no creaking.

bj.bonnette

I have the same setup. 6k+ miles with no issues.

Dunbar

And I went through two sets of WM adapters in 5k miles due to creaking. Eventually I switched to the Praxis adapter and the bike has been silent since.