Standard 172.5 Sram S975 Quarq with 53/39 sram tt rings. Straight trade for a compact of similar quality. Or make an offer.
I have a 50/34 s975 that I would trade for standard. Is that GXP? That’s what mine is.
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Well it was ment to be I guess. Because mine is also a GXP pm me lets get it done. Cheers.
Crank arm length?
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Crank arm is 172.5
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You could each just unbolt the Quarq spider from the arms and just swap Quarqs…that way you could keep the old arms. (if the lengths are wrong)