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About ADD USA Inc.

ADD is one of the largest manufacturers of Shocks, Struts and Complete Strut Assemblies in the world, nearly 30 years of expertise in Ride Control and Suspension products manufacturing, doing businesses in more than 135 countries worldwide, with a strong presence in OE / OES developments and a leading participation in the Global Aftermarket Business. Our brand PRT is synonym of Quality, Complete Coverage, Advanced Features and built-in Profit Potential for its Customers. PRT Heavy Duty program offers a leading coverage of 100% Gas-Charged Shocks for HD applications, such as Trucks, Trailers, Buses, Commercial Vehicles, Cement Mixers, Motor Homes, etc. PRT Air Shocks are an excellent OEM quality replacement for air suspension systems providing the luxury and comfort of a smooth ride at an affordable price. PRT products are produced and tested under the strictest OE quality processes required by main automakers. We have OEM Quality and Complete coverage, RIDE TECHNOLOGY IS IN OUR NAME!!!


  • PRT
  • PRT Air Shocks
  • PRT Heavy Duty

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