New performance exhaust system. Increase your power and torque with a simple bolt on system. Dyno tested for ultimate air flow and performance. Dyno results show power numbers on a stock warrior, a warrior with the exhaust on but not tuned and then the exhaust on with proper jetting and tuning done by a professional power sports shop TUNING IS HIGHLY RECOMMENDED FOR THIS KIT! Kit includes: 1x aluminum muffler with USFS approved spark arrester and biggest insert installed 1x header pipe and gasket 2x different diameter inserts (the smaller the insert the quieter it will be) 1x Allan key set 1x flag 1x key chain 1x sticker ADULT SIGNATURE REQUIRED FOR DELIVERY New performance exhaust system VERSION 2.0. Increase your power and torque with a simple bolt on system. Dyno tested for ultimate air flow and performance. Dyno results show power numbers on a stock warrior, a warrior with the exhaust on but not tuned and then the exhaust on with proper jetting and tuning done by a professional power sports shop. TUNING IS HIGHLY RECOMMENDED FOR THIS KIT! Kit includes: 1x aluminum muffler with USFS approved spark arrester and biggest insert installed 1x header pipe and gasket 2x different diameter inserts (the smaller the insert the quieter it will be) 1x allan key set 1x flag 1x key chain 1x sticker. SIGNATURE REQUIRED FOR DELIVERY.