Founded from August Bilstein’s 1873 beginnings in Westphalia, BILSTEIN manufactures shock absorbers and suspension systems for road vehicles, off-road use and motorsport. Headquartered in Ennepetal, the company has more than 4,000 employees across six countries and produces around 13 million shock absorbers each year. Its long-running motorsport presence—including victories in Formula 1, the World Rally Championship and major endurance races—continues to inform its aftermarket and original-equipment work.
BILSTEINBILSTEIN makes automotive suspension systems and shock absorbers, drawing on more than 70 years of damping-technology expertise. The traditional family business began in 1873 making window fittings before moving into automotive parts and developing into a global manufacturer with more than 4,000 employees across ten locations in six countries. Its annual output is around 13 million shock absorbers, with technologies developed for automakers and tested in international motorsport.HAMILTON, OH
Penske Racing ShocksFormed in 1988 from the Penske Racing Indy Car team’s search for a higher-performing damper, Penske Racing Shocks manufactures custom racing shocks for automotive, motorcycle and off-road vehicles. Each shock is billet-machined and hand-built in America rather than mass-produced or outsourced, with every unit dyno-tested before shipping. From its Reading headquarters, a team of more than 40 supports racers worldwide while also developing specialized damping and precision CNC-manufacturing solutions for military and other demanding applications.READING, PA
SUSPA GmbHFounded in 1951, SUSPA GmbH has grown from its Altdorf headquarters into a global manufacturer with more than 2,000 employees and eight production sites across five countries. The company is known for developing application-specific motion and safety solutions for customers in fields such as automotive and furniture, supporting projects from initial concept through series production.WESTERVILLE, OH
Santhuff's Suspension SpecialtiesFrom its Sinton, Texas shop, Santhuff’s Suspension Specialties builds drag-racing shocks and struts designed specifically for the demands of the strip. Its patented port-only valving is speed-sensitive rather than based on conventional spring stacks, and the company supports racers with adjustment guidance, custom configurations, and service work. Santhuff-equipped cars have appeared in major drag-racing wins and records, including NHRA, ADRL, and Australian Top Doorslammer competition.FOSTORIA, OH