SilverbackHD's complete line of GeoMetric Series manual and automatic slack adjusters are consistent with the corporate Intentional Engineering® standard.

Each slack adjuster is engineered to exacting standards to insure ongoing braking efficiency, longer life, and seal integrity under the harshest conditions.

The efficiency of a slack adjuster will depend on the quality of its components. SilverbackHD uses only tool-grade steel, and quality forgings to insure that every style of slack adjuster will have dependable performance throughout its life. Case hardened and heat treated componentry that meets SilverbackHD Intentional Engineering standards, is built to harmonize with SilverbackHD GeoMetric Series S-Cams and other wheel end components.

Because the SilverbackHD automatic slack adjuster is exposed to the worst road corrosives in the industry, we use a series of rust and corrosion inhibitors to insure longer life.

All exposed moving parts a zinc-dichromate plated for optimum corrosion resistance, while the housing is coated with a ferritic nitrocarburizing process. To complete the sealing process, SilverbackHD uses high quality gasketing and thermoplastic resin (TPR) o-rings designed to withstand severe temperature fluctuations and the environment. 

So, if you want an automatic or manual slack adjuster built to meet the most rigorous road conditions, choose SilverbackHD. Because at SilverbackHD Products, HD means “Heavier Duty.”