4-Inch Lift Kit with Pro-Ride Coil Springs and Radius Arms

The BDS Suspension 4-inch lift kit is engineered to enhance the stance, performance, and capability of your 2013-2018 Ram 3500 gas-powered truck, specifically models equipped with factory rear air ride and 4WD. This comprehensive kit provides the necessary components to accommodate up to 35-inch tires. Up front, the kit features gas-specific, progressive rate Pro-Ride coil springs for a smooth and predictable ride. Heavy-duty tubular radius arms replace the factory stamped steel components, offering improved strength, caster control, and an OE-style rubber bushing for quiet operation. Steering geometry is optimized with a forged drop pitman arm to minimize steering angle and a heavy-duty track bar drop bracket to keep the axle centered through suspension travel. In the rear, the kit includes a high-strength fabricated lift block, a heavy-duty air bag spacer to integrate with the factory rear air suspension, and longer u-bolts. Both front and rear are fitted with BDS NX2 Nitro Series or optional FOX 2.0 Performance Series nitrogen-charged shocks to enhance ride quality and off-road performance. Recommended tire and wheel configurations include 35x12.5 tires with 20x9 wheels and 4.5 inches of backspace, or 37x12.5 tires with 20x9 wheels and 5.625 inches of backspace. Note that tire trimming may be required depending on the chosen setup.