This shaft replaces the two-piece steel shaft that cannot handle the torque and 150+ mph speeds, and eliminates the center driveshaft support bearing. This shaft is made of exclusive gold finish 7075 aluminum material, which is both stronger and lighter than steel, making it able to perform under the stresses where the two-piece steel shafts fail. The MW patented boding process is used to join the end fittings, proving much stronger than the standard welding method. These shafts include precision Spicer 1350 universal joints and are Hi-Speed balanced to G30 specifications with controlled shaft runout. Torsion tested to assure quality. Due to the custom nature of this part, please call 1-866-508-6394 or contact us to order.