Cast in aluminium and specifically designed for the ST150, this performance manifold delivers more power, torque and gives a distinctive new induction noise to the engine. Tests have shown over 15bhp increase on a supercharged engine. Best results will be seen on modified engines with at least a re-map, cams and exhaust. Fits with the standard throttle body or an uprated 60mm version. Directly replaces the original manifold. The power steering reservoir needs to be repositioned when fitting this manifold. A separate relocation kit (FD501) is available for ease of fitment and contains a new modified power steering reservoir, stainless union, stainless fixings and black flouro lined silicone hose.