TEN Factory: Precision Forged for Quality, Strength and Performance - All TEN Factory axles feature a 10-year replacement warranty! Front axles and two axle rear kits are black oxide coated. TEN Factory is the brand you can trust for the highest-quality engineered axle shafts and replacement kits. Built with the toughest materials, the wear-resistance of forged steel is heat-treated to produce durable axle shafts for your Jeep, car or truck. Buy with confidence knowing that the latest technologies in metallurgy, heat treating and CNC machining have produced an axle you can count on in the most difficult conditions.