Improved bottom end and mid range power! You can expect to see better throttle response with this slip-on exhaust. Our slip-on exhaust system is 8-9 lbs. lighter than stock! This slip-on features a built-in spark arrestor and uses stock mounting locations and hardware. You will see a 4-5 HP Gain! ORDER NOW! Fits: 2008-2014 1000cc Thundercat, Thundercat 1000 MudPro & Thundercat 1000 TRV