Dodge Ram 2500/3500 Heavy Duty Front Drive Shaft Five grease fittings (at each moving part) Dynamically balanced for vibration-free operation Measures 31 1/16" from flange to flange (collapsed position) and approximately 32 3/4" flange to flange in the running position Uses heavy-duty 1350-style u-joints in the CV joint at the transfer case Uses the serrated, AAM-style flange at the differential