Prothane 04 Subaru WRX/STI Rear Sway Bar Bushings - 19mm - Red (PRO16-1103)

Prothane is a U.S.-based manufacturer specializing in high-performance polyurethane suspension components, including bushings, mounts, and chassis parts. Founded in 1991 by two brothers who were professional car racers, the company was established to offer professional-grade urethane products to car enthusiasts worldwide . Prothane's products are engineered to enhance vehicle stability, handling, and longevity, serving as durable upgrades over traditional rubber components. With a catalog of over 10,000 parts, all made in the USA, Prothane caters to a wide range of vehicles, from classic muscle cars to modern imports.​