For Dodge Ram Standard Cab 2WD / 4WD (V8 Only) 2009-2018. for RAM 1500 Classic Standard Cab 2WD / 4WD (V8 Only) 2019-2022. Product type: coil spring lowering kit. Spring length: rear 420mm/16.53". Spring rate: rear 1.4kg/mm-3.6kg/mm=78.39lbs/in-201.59lbs/in.