High Performance: let the exhaust flow more smoothly to increase more power horse. Easy to install the exhaust pipe. The heat shield spacer can withstands 1800°F direct/2500°F intermittent heat prevent burns from the hot exhaust pipe during riding. Safe to ride your minibike. Smooth cut : nice looking Thickened flange: we update the flange thickness, making it more durable, not easy to snap for long time use. Electroplating process: have the strong features of corrosion and wear resistance than others It's fast and loud in the country, crazy fun! If you are in a neighborhood or in town, it may be too loud, Not threaded to install a muffler.