I’ve jumped in and purchased the new Speed Concept (with Sram Red groupo) and i’m now thinking of further going into debt and buying a SRM 
Looking at the SRM website, it seems that the only SRM compatable with the BB90 bottom bracket in the FSA K-Force light.
Does anyone know if this is correct, or can I buy other SRM/crank options and fit them onto a BB90 bottom bracket
thanks for your help
Dura-Ace SRM wireless should work since shimano press-fit bearings work w/ bb90. Waiting for my SC, too – 45 days out. Quarq w/ fsa or sram cranks should also work w/ bb90. I heard rotor cranks may also work with shimano press-fit bearings in bb90 – though not confirmed.
anybody know if the an older DA wired SRM is compatible with the Speed Concept? I know the BB should be fine - I just know there has been talk of clearance issues.
if you were to go with the quarq and sram crank which BB should you order the BB30 or the GPX I dont know the difference
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Yeah and that’s the leading option if/should/etc get a speed concept.
The query about the SRM is due to me having a Wired SRM pro (Octalink) already, and I want to have a plan B should I not be able to swing another $2k - since Wired DA SRMs are going for a much more reasonable amount.
I think that only the DA SRMs from right before the wireless ones came out would work. They changed the white cover on them so that Levi and others could use them on their Treks. I believe that the white cover tapers to a thinner width by the chainrings to allow it not to rub the frame. Buying a used one, you should be able to tell by looking at the pictures of the cover.
You wouldn’t order either of those BBs. You would need a press fit bottom bracket for BB90. If you bought a speed concept with Sram it would come with it.
Agreed - my assumption is that SRM in Colo Springs would be able to put a new lid on it.
Oh well - first I need to figure out how to get my hands on a speed concept!
surely all da srms will work as the SC comes with shimano ultegra/da anyway and its a standard fit…?