Big Gun Exhaust Systems EVO R Slip-On EVO R Series exhaust system has 27 years of Mike Youngs personal racing career built into it Mike has found that having the most horsepower and the lightest exhaust was not always the answer Image is for Reference Only. Slip On Exhaust / Silencer Only Header not included. Race Tools hi-performance silencer pillow packing with a stainless steel wire screen to keep the decibels down and the power up Removable spark arrestor for those that race on USFS lands