Fox 2.0 Performance Series Front Driver or Passenger Side Monotube Shock Absorber for 4.0"-6.0" Lifted Vehicles (210-90206) by Cognito Motorsports®. The 2.0 Performance Series Shocks delivers race-dominating performance in a hassle free bolt-on package. Their heat-reducing design includes a metal-impacted aluminum shock body that dissipates heat faster than conventional steel. Inside the Internal Floating Piston (IFP) separates shock oil from a high-pressure nitrogen gas chamber that provides a predicable ride quality capable of handling the roughest road conditions. Combine these new technologies with a competitive price for a winning combination.