Rear Driver or Passenger Side Nitro Shock Absorber for Stock Height Vehicles by Zone Offroad. Quantity: 1 per Pack. The Zone Nitro Series shocks absorber offers the ultimate in control and performance. The full displaced valving offers a better valving range on both the compression and extension travel. This vehicle specific valving is pressurized with a low pressure nitrogen gas. This gas charge ensures split second response and reduced aeration. Combine these features with the special Fluon banded piston and this shock is built to perform. Designed utilizing the latest technology, this product features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed stringent industry standards.