Ten Factory Chromoly driveshaft 's come fully assembled and are designed to handle/take abuse both on and off-road. Our driveshaft 's feature 4130 Chromoly tubing for strength and durability, with 1310 or 1350 precision u-joints. Electronically balanced to the highest tolerances to provide a vibration free ride. Plus, Ten factory driveshaft 's feature our famous real World 10 year warranty. The best warranty in the business!