Made as a solid steel CVDâ„¢ Shaft, the MIP X-Dutyâ„¢ Center Shaft is designed and built to handle any and all driving conditions. The MIP X-Dutyâ„¢ Center Shaft requires no modifications, simply install it in your UDR and GO! Its that EASY! This new center drive shaft also utilizes X-Dutyâ„¢ couplings and hardware for easy rebuilding.