These were built for me through a shock repair place in town last fall and have no complaints about them, I just found a good deal on some Fox floats and decided to try those. They have one season on them and are in perfect shape. They have stiffer springs and are fully rebuildable. Stock REV shocks are 17 in. center to center. I had these built 17.5 center to center because I like the extra ski pressure. They were $600 brand new. Email or PM me with any questions or give me a call. (907) 382-9089 akmclean@hotmail.com