Sorry if this is a silly question but I need to replace my large chainring, cassette and chain, and figured while I'm at it, I'll also replace the BB. It's a GXP crankset and I'm wondering if I can use a BB30 in place of the GXP. The bike is a 2012 Roubaix Elite Rival Compact. Thanks for your perspectives.

That page says it has a threaded bottom bracket - which is surprising for a carbon frame. But if that's true then no, you can't use a BB30 bottom bracket. Even if you could, you would need an adapter to use a GXP crank in a BB30 BB.

Your link, specs : SRAM S350

BB - COMPATIBILITY: BB30, PF30

can I make lunch for you too?

Is It threaded? IDK not My Bike.

I would not trust a lunch you made today. The pictured bike shows gxp, op said gxp, no bb30 can be entered into. Gxp is 24mm only.

- joel

Not sure where you see that?
The SRAM S350 is available in both 30mm and GXP 24mm. The Specialized page says:
Specialized FACT 8r carbon, FACT IS construction, compact race design w/ Zertz inserts, 1-1/8" to 1-3/8" head tube, internal rear brake cable, threaded BB

Thanks for the responses. Communicated with Specialized Service ‏@theMasterLink today and received information that my bike is a GXP - English threaded. Their Twitter folks were fast - responses in minutes to my queries.