I want to buy myself a nice MTB quarq. I have a standard BSA frame so I'd buy the GXP version with external cups.

Thing is, if I ever change my bike, I'll be stucked with choosing among the BSA frames option. I know I could put a sleeve to adapt a BB30 frame into a BSA frame but it adds quite a bit of weight. Any way I could do the opposite? i-e adapte a BSA frame to PF30 or BB30?

thanks for any suggestions

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The SRAM BB30 crankset works in a BSA frame with a conversion bottom bracket such as that offered by Rotor.

Alternatively just buy the GXP crankset and if you get a BB30 frame you just buy BB30 crankarms and swap the Quarq spider onto them.

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Grover's Grumblings
Grover's Garage

o_O

Reading on the rotor bsa30 BB, they say its only compatible with sram 900 and 975 cranks, the MTB quarq is a sram s2275 crank... Would it fit?

I like the crank arm idea, quite dumb not to have thought about it myself.... facepalm

thanks!

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I use bb30 X.0 crankarms with a rotor bottom bracket in a BSA shell. These crankarms are the same as those you get with a Quarq mtb crankset...just different graphics. 900 and 975 are the road crankset model numbers. They just don't list which MTB models it's compatible with.

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Grover's Grumblings
Grover's Garage

All right thanks a lot!

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My steel XPREZO 29er race bike
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Quarq are also super cheery and helpful in person... I'm sure you could give them a call for answers too.

yup

they said the GXP and bb30 version were fully cross compatible.

quarq ordered

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My steel XPREZO 29er race bike
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@grover - Does your bike have a 68mm or 73mm shell?