The 2.0 Performance Series IFP smooth body shock from Fox Shocks contains the latest in shock technology to transform the performance of your Truck or SUV. Fox Shocks use race-proven damping control to provide a comfortable on-road ride and predictable off-road handling in even the toughest conditions. Featuring a precision metal impact aluminum body, Fox Shocks have increased cooling capacity and will never rust. Race-proven performance valving technology and an Internal Floating Piston (IFP) mono-tube design separate the shock oil from the high-pressure, nitrogen-charged gas chamber. The IFP eliminates oil aeration allowing maximum performance from the factory-tuned precision valving. The race developed high flow damping piston matched with application specific valving provides the 2.0 Performance Series IFP shock a predicable ride quality capable of handling the roughest road conditions.