I just put a Tranz X on my old SIR 9, with the external cable. This is the same as the PNW Pine. So far I like it. It does have a tiny amount of wiggle when you grab the saddle, but you do not feel it while riding. PNW has a few options since you can run the Chisel with internal or external routing for a 27.2 post. Though there is this on Amazon if you want to try it for a minimal cost at first.
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