Fox Float 3 EVOL R front shocks with Kashima Coat offer 2 air chambers- the main to control plushness and the EVOL chamber for bottom out resistance and roll control. They also have complete rebound adjustability with a simple turn of the knob. These shocks also eliminate the coil spring which usually drops about 6 pounds of weight. These are a great upgrade whether you need to upgrade your sport model or want full adjustability compared to even factory "X" model shocks. These fit 2003 to 2015 Ski-doo models with 17.5" center to center and 42" wide front ends. Sold per pair.