Inertia sensitive and velocity sensitive damping. Polished and anodized billet aluminum end covers. Easy adjustable spring pre-load, no tools required. Progressive Rate springs, chrome or black powder coat. NEW limited manufacturer`s lifetime warranty on the shock and springs. The 440 Series I.A.S. shock represents a breakthrough in shock technology. It offers inertia sensitive damping, polished and anodized billet aluminum end covers, easy adjustable spring pre-load (no tools required), Progressive Rate springs (chrome or black powder coat finish) and a new limited lifetime warranty on the shock and spring. I.A.S. technology utilizes two separate rebound damping circuits to control chassis and wheel movement independently for the ultimate in stability and comfort. I.A.S was developed for automotive use by Edelbrock using Ricor technology. Now refined by Progressive Suspension for motorcycle use. These 440 shocks are the only shocks to offer this level of performance. Sold in pairs.
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