Heidts Rear Billet Adjustable Coil-Over Shocks

Heidts Rear Billet Adjustable Coil-Over Shocks (4-link) 15 3/8? extended 11 1/2? compressed. Sold in pairs, works with CS-250-10, CS-300-10 AND CS-350-10 spring,

In a vehicle, shock absorbers reduce the effect of traveling over rough ground, leading to improved ride quality and vehicle handling. While shock absorbers serve the purpose of limiting excessive suspension movement, their sole purpose is to damp spring oscillations. Shock absorbers use valving of oil and gasses to absorb excess energy from the springs. Spring rates are based on the weight of the vehicle, loaded. Some people use shocks to modify spring rates but this is not the correct use. Along with hysteresis in the tire itself, they damp the energy stored in the motion of the unsprung weight up and down. Effective wheel bounce damping may require tuning shocks to an optimal resistance.