Freedom Offroad FO G304 FREE 1 4" Lift Extended Nitro Shocks (07 25 1988 1998 C1500 Silverado & Sierra OBS Pickup Lowering Nitro Drop Shocks 73 87 Chevy GMC 1500 Pickup 4WD 6 8" Fr 4.5 8" Rear Lift Skyjacker rear nitro shock absorber N3 Rough Country Lift 6 7,5". Skyjacker Suspensions offers you a high quality shock absorber with true velocity sensitive valving. Shock absorbers, or spring dampers as it is called everywhere else except in the U. S., control the rate at which suspension springs compress and rebound. As the shock is pushed together, this is called bump or compression. As the shock expands, this is called rebound or extension. Absorbing the shock of bumps and suspension loading is actually performed by the springs in the suspension. The shock's real job is controlling the energy stored in the springs. Features: Multi Stage Velocity Sensitive Valving Twin Tube Construction 5 8 in. Diameter Hardened And Double Chrome Rod Red Polyurethane Bushings Includes Red Boot 15 Other Colors Available Limited Lifetime Warranty Position: Rear Series: Nitro 8000 Color: White Boot Color: Red Stroke: 11. 13 Inch Extended Length: 27. 07 Inch Collapsed Length: 15. 94 Inch Sold As: Each