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Discussion Starter · #1 ·
Hi all,

I’m putting together a spare bike and am doing a mix-n-match drivetrain mainly because I have most of the parts as spares. I’m using a sram XO 9 speed shifter, shimano SLX 11 speed derallieur, narrow-wide chainring and am getting a sunrace 11-40 9 speed cassette.

The question I have is which chain? I’m assuming a 9s to match the cassette, but will that fit through the cage of the 11s derallieur because it is a bit wider? I’ve heard of this being done as the pull ratio of the shifter and derallieur match, but haven’t heard which chain was used.

Thanks in advance,

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