Sparks Racing X-6 Stainless Steel Exhaust System (Big Core) Yamaha YFZ 450 2004-2013 | PY04450YFZSS-01

The Sparks Racing X6 Stainless Steel Exhaust system is the ideal exhaust system for any application because of the power gains it produces through the entire power curve. Our exhausts are complete systems, not slip-ons, because we've found much more performance with designing a complete system rather than working with the limitations of the stock head pipe. Some aftermarket exhaust systems are able to be used as a slip-on or complete system, but the problem is they're still limited to stock diameters where the head pipe and rear section come together. We have spent countless hours testing on t