Dyno developed and tested, Pro-Tec's 2 into 1 into 2 balanced flow design will provide a 23% gain in horsepower and a significant increase in low RPM torque. Rubber mounted for reliability and ceramic thermal coated for durability the Pro-Tec Mach-1 exhaust system includes U.S. Forestry approved spark arrestors and an adjustable sound suppression system that allows you to adjust the sound output of the exhaust system. The Pro-Tec adjustable sound suppression system is exclusive to the Pro-Tec Mach-1 exhaust system and will not be found on any other aftermarket exhaust systems. When used in conjunction with an aftermarket CDI you will see a speed increase of up to 31% on a Rhino with a stock engine. An even quieter sound suppression insert is available separately to reduce the sound output.