HMF Exhaust - Full HMF Utility Series Exhaust systems are the best performing aftermarket ATV exhaust systems for your utility quad. Choose this model if you need to get the most out of your big utility ATV without breaking the bank.Available in both slip-on and full systems.Designed to give you the most power and torque of any aftermarket exhaust available.Included USFS Forestry approved (but removable) spark arrestor.Quest core is available to tone that powerful sound to under 100dB.All pipes are made with Race Tex pillow packing contained in a T-6061 aircraft grade aluminum canister with stainless steel headers.Several colors available for most pipes.Full 2 year manufacturers warranty.