Tomei Camshaft - PROCAM - Subaru Impreza Forester EJ255 EJ257, Exhaust, 252 / 10.3mm 51210-S5T-Z00 Skunk2's Alpha Series headers are

Skunk2's Alpha Series headers are designed using mandrel bends which result in maximum air flow and power

is a must-have for sports driving

In addition to side pocket processing with an MC processing machine

the engine shake and unpleasant suspension movement cannot be suppressed

Tomei Camshaft - PROCAM - Subaru Impreza Forester EJ255 EJ257, Exhaust, 252 / 10.3mm 51210-S5T-Z00 Skunk2's Alpha Series headers areWhen opening the intake valve during high acceleration the G from the camshaft requires to send as much mixture to the cylinder, Intake, the shortest time possible. However if the speed is too high it can damaged the Valves, Valve Seats and Valve Springs if the Acceleration G is too high. The Asymmetrical profile design given to the camshafts will allow the Intake and Exhaust Valves to fulfill the target requirement with the wider duration and high