This shaft will replace the stock 2-piece shaft and eliminate the disconnected feeling you get from the stock shaft with its Giubo (rubber drive) and soft hanger bearing rubber. The stock shaft has to have the Giubos twist, then the hanger bearing moves up and only after all this happens the car will start to move. With this new redesigned 4" aluminum driveshaft that uses a Custom CV assembly now on both ends, will make the car feel more connected. The response from the gas pedal will be more responsive and will increase 60ft times at the track. This is balanced like all shafts on our 9500rpm balancer so you know it’s done to the best standards available today.