Gruppe M Ram Air Intake System BMW E81 E82 E87 135i 08+ The creation of the RAM AIR SYSTEM was to improve efficiency by reducing the restrictions of a stock intake. To achieve the efficiency,...
Riss Racing Stage 1 Short Ram Intake BMW 135i 08+ Riss Racing's Stage 1 Ram Air Intake Comes equipped with a huge plenum to distribute air evenly to both turbos. Through the 3.5" intake piping,...