FOX FLOAT 3 EVOL R air shocks are high- performance shock absorbers that use air as springs, instead of heavy steel coil springs or expensive titanium coil springs[4]. Underneath that air, the sleeve is a high- performance, velocity-sensitive, shimmed damping system[4]. FLOAT 3 EVOL R air shock dampers contain high-pressure nitrogen gas and FOX high viscosity index shock oil separated by an Internal Floating Piston system[4]. This helps to ensure consistent, fade-free damping in most riding conditions. There are two chambers in the shocks. One of the chambers is MAIN AIR CHAMBER and other is EVOL CHAMBER. The air pressure in EVOL air chamber is adjusted to control the vehicle corner roll and bottom-out characteristics. The air pressure in the MAIN air chamber is adjusted to change the ride height and suspension stiffness[4].