-Air springs can reduce your costs and increase your profits. -Last at least twice, and as much as four times longer than steel springs. -Require little or no maintenance. -Increase life of tires and brake linings. -Substantially reduce breakage and maintenance of other vehicle components, including electrical, air conditioning, cab mounts, exhaust, chassis, seals, wiring and drive train. -Let you haul anything; eliminate expensive deadheading runs. -Reduce driver discomfort and dangerous fatigue; improve driver safety, productivity and loyalty. -Allow perfect load equalization between axles; lets you run at the maximum legal limit. -Provide smoother ride for payload, reducing costly insurance claims and the expense of over packaging. -Pay you back at trade-in time; trucks and trailers with air suspensions are worth more. -100% of all air spring assemblies are pressure tested before they leave factory. -2 year / 250,000 mile warranty. Best in industry. -Trelleborg Vibracoustic rubber compounds have superior 'flex' range through temperatures of -76°F to 135°F.