This bypass for the 1330cc triple cylinder ACE engine. Not all bypasses are created equal. With this new bypass, it ensures a problem-free product for life. This is a true free flow system from the engine to your original or "aftermarket" exhaust. Gives a nice low rumble and increases low to mid range torque which you can instantly feel. Allows better air circulation, less heat, considerable weight savings and improved fuel economy. Made of T304 stainless steel and factory OEM matching for all resort hinged and clip briefs just as stock.