23hp Briggs SMALL BLOCK VOODOO EXHAUST fits the small block Briggs and Stratton engine. Comes with mounting bracket, bracket bolts, and clamp. Constructed from 100% 304 stainless steel for the superb heat and vibration properties. All the way down to the hardware to handle whatever conditions and abuse your pursuit throws at it. Finally the 23 fans have an option for a true performance exhaust system that makes real power.