Tomei Camshaft - PROCAM - Subaru Impreza Forester EJ255 EJ257, Exhaust, 264 / 10.0mm 53521-S5A-003 Black Anodized for Good Looks

Black Anodized for Good Looks and Corrosion Resistance

Each OEM-grade standoff replaces the factory mounting studs and is secured to factory specifications

With Turbosmart’s Dual Stage Manual Boost Controller

Pad dimensions: 38mm pad depth × 16mm thickness

An engine’s camshafts must be set at their proper positions relative to the crankshaft in order to maximize horsepower

Tomei Camshaft - PROCAM - Subaru Impreza Forester EJ255 EJ257, Exhaust, 264 / 10.0mm 53521-S5A-003 Black Anodized for Good LooksWhen 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