They should be 17.25 Ctc if they are walker evans. Not sure on the ryde shocks for the RMK, but I think they would be similar.
I know that the 11-12 pro shocks will fit with a 17.5" CTC. I am also pretty sure the 13-14 shocks will fit too with the Zbroz eyelet extension kit (brings them to around 17.15 CTC).
