Suspension Technologies USA is a mission-driven motorcycle component engineering company specializing in creating high-performance shocks and front fork cartridges for Harley-Davidson motorcycles. Their products feature a true monotube shock design with custom valving for optimal performance, inspired by NASCAR, NHRA, and Road Racing standards. The company's signature Black Hills series Harley shocks utilize a low-pressure nitrogen gas design for a smoother ride. In addition to shocks, they manufacture front fork suspension systems with progressive wound springs and cartridge fork designs for superior oil management. All products are Dyno-Tested and balanced for predictability, showcasing a commitment to innovation and quality in the American motorcycle industry.