Powerflex Bushes help other components work at their best, by reducing flex and warping compared to standard rubber bushes. For the Engine Support Bushes, this results in reduced vibration and noise. Reducing the movement of the engine/gearbox helps to improve torque steer (less driveshaft angle change) and will make aftermarket exhausts less prone to failure due to reduced flexing. They are also very easy to fit due to them being an insert.