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Dec. 16, 2018, 5:58 p.m. -  Andrew Major

GX 11 vs. GX 12 for better or worse I’ve found the difference to be one cog and a longer derailleur cage. No difference in durability. I find compared to Shimano the derailleurs develop slop faster (could be because without Shadow they simply hang out to hit things more) but Eagle vs not-Eagle SRAM is comparable. What are you noticing in terms of degradation? If you haven’t already, I’d install Shimano 4mm housing and I prefer to run a 1.1 stainless cable with some Triflow in the housing. Next thing I’d say - if shifting is still tight - is the XO1 cassette shifts better in addition to weighing less and costing more. I don’t think it’s a stretch to say the biggest performance difference through Eagle is found in the cassettes and chains.  For the record, my drivetrain of choice is an 11-spd SLX or XT derailleur with the clutch detuned close to SRAM clutch tension, an XTR shifter, an E13 cassette (XD freehub) with a good Shimano chain or a Sunrace cassette (Shimano freehub) with a good SRAM chain and a Wolf Tooth stainless ring.

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