a short cage 10 speed SRAM mtb mech such as X9 will work
Official SRAM policy is to use the mid-cage for 2×10 with a big sprocket of 28-32, and long cage for 2×10 with a 36T sprocket.
Ah, gotcha. Would be helpful if they listed (or I could find) the chain capacity specs for 'em.
(those guidelines also might be referring to bikes that have squish)
@Howard started
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Official SRAM policy is to use the mid-cage for 2×10 with a big sprocket of 28-32, and long cage for 2×10 with a 36T sprocket.