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NHAero and Mark McM,
I'm pursuing a similar mod of a SRAM S900 GXP crankset and am a 4 bolt newbie. I'm shooting for 2x with 44 (or 42,46) outer x 28 (or 26, 30) inner and am struggling to find an appropriate chainring set while ideally avoiding NHAero's needed mods. Since you've both already done a lot of the legwork am I best going 120/80 (appropriate SRAM spider) or 104/64 (North Shore spider) for the sake of chainring availability?
Are rings labeled "outer" suitable for both inside or outside mounting, or intended only for the bash guard/3x set-up mounting location outside of the crank.
Your assistance is appreciated and thanks for all the excellent detail earlier in this thread that convinced me to give it a go.
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