Skyjacker(R) 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.. Skyjacker 2007-2007 Chevrolet Silverado 1500 Classic 4 Wheel Drive Hydro Shock Absorber. 5/8 in. Diameter Hardened And Double Chrome Rod. Includes Red Boot 15 Other Colors Available. Multi-Stage Velocity Sensitive Valving. Red Polyurethane Bushings. Limited Lifetime Warranty. HYDRO SHOCK W/RED BOOT. Twin Tube Construction. Shock Absorber

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