Polyurethane has proven itself as the material of choice in high performance suspension components. Urethane, when properly formulated, stands up to the stress of performance street cars, trucks with suspension lifts and muscle cars with big horsepower. Polyurethane is more firm than rubber, and controls suspension components like sway bars and control arms better. Prothane offers top of the line polyurethane suspension components for many vehicles on the road today. Whether you're lifting a 4x4 or dropping a street car, Prothane has individual polyurethane components and complete bushing kits for your vehicle.