Varex Technology VAREX mufflers combine both the design technology of the stock muffler and the performance muffler into one single compact unit. A sophisticated butterflyvalve mechanism is implemented to redirect the exhaust gas flow and vary be-tween the two. For higher sound level, the exhaust flows are directed through the opening path and produces maximum power with a robust sound level (or the “sports car note”) and near-zero resistance. Whilst for lower sound level, the exhaust flows are directed through the chambered path (similar design with the stock muffler), and produces minimum sound level that gives you the best in-car comfort. Angle of the valve is also controllable, which can be adjusted to stop at any point between sports mode and silence mode. This gives you further freedom to set the optimal sound level according to your desired preference. Varex Kit Contents Varex harness With Water Resistant Connector & Power Plug Control Module Remote Control Keypad Varex Muffler Of Your Choice Muffler Band Varex Motor VAREX Motor and gear sets are located on the top of the muffler, they work as an integrated unit to drive the butterfly valve open and close. The dimensions of the motor and gear box are typically manufactured to 4.5cm(H) x 10cm(W) x 20cm(L) *Dimensions may vary depending on model Varex Control Kit VK01 Water resistant plug (connected to Varex Motor) Power plug Remote Control Keypad Control module VK02 Dual control kit. It shares the same components as VK01 except having two connecting Plugs for dual VAREX mufflers VK05 Automatic control kit which features an extra function that can adjust the volume automatically according to the pre-set RPM by users. CLICK HERE FOR THE VAREX SPEC CHART THIS ITEM VMK11-350 * Inlet O.D - 3.5" * Inlet Length - 3" * Outlet O.D - 3.5" * Outlet Length - 5.5" * Outlet Style - Single Wall * Body O.D - 6" x 10" * Body Length - 15"