These fully assembled, heavy-duty CV axle kits are torture-tested to failure and designed to withstand the most rigorous conditions and terrain to ensure maximum durability. Kits include a precision-machined and heat-treated solid chromoly steel center shaft, cages and ball bearings that are up to 35% stronger than OEM, induction heat-treated joints with high-temperature moly grease, precision-rolled splines and threads, high-strength, spring steel retaining clips, TPE dust boots for superior tear and puncture resistance, new dust rings and guards, and secure stainless steel dust boot clamps.