Synergy Manufacturing is an industry innovator and manufacturer of high-end automotive performance components.
. These bushings are only replacements for Synergy products that came with Dual Durometer Bushings (DDB);California Residents: WARNING Synergy Manufacturing Lower Control Arm Dual Durometer Bushing - 4320-01 In addition to suspension systems, Synergy also manufactures a complete line of heavy duty steering components, axle upgrades, skid plates, and other related products that dramatically improve vehicle on and off road capability, performance, and appearance.