Gratz Pilates, founded in New York in 1929, handcrafts classical Pilates apparatus in Philadelphia to Joseph Pilates’s original specifications. Its connection to the method dates to the late 1960s, when Donald Gratz worked with Joseph Pilates protégé Romana Kryzanowska to build equipment faithful to the original designs. Today, Gratz remains known for precision-built apparatus made by skilled artisans and used by classical Pilates studios worldwide.
King Strength MFGKnown for equipment that has served prominent facilities around the world, King Strength MFG is an Allentown, Pennsylvania manufacturer whose founders bring decades of experience in professional strength-equipment design and engineering. The company builds American-made equipment for high-use training environments, serving elite clubs, athletic programs, and rehabilitation facilities with specialized pieces such as its John Boos M.A.S.S. line.ALLENTOWN, PA
PRIME Fitness USARooted in the USA and hand-crafted in northwestern Pennsylvania, PRIME Fitness makes strength-training equipment engineered around its SmartStrength® approach. The brand is owned and manufactured by Specialty Fitness Systems, which has been the sole manufacturer of Strive Strength equipment since 2009 and acquired Strive outright in 2013. PRIME’s equipment is made to order, including selectorized and plate-loaded machines, racks, and gym accessories.339920FRANKLIN, PA
Keiser CorporationFounded by brothers Dennis and Randy Keiser in 1977, Keiser Corporation manufactures fitness equipment in Fresno, California, using its pioneering pneumatic resistance technology to train strength and speed without the inertia of traditional weights. The company’s American-made machines serve athletes, tactical teams, rehabilitation specialists and older adults, while its M Series indoor bikes connect to digital tools that capture workout data. Keiser also supports its equipment with trainer education, performance testing and U.S.-based parts and service.CINCINNATI, OH