HMF Performance Series: *Please note if not in stock then a build time of approximately 5 working days and shipping from HMF may apply. Setting the standard for power and value, the HMF Performance Series has been tested for over a decade with endless championships. The specially designed, unrestricted core allows the exhaust to increase power evenly throughout the entire power curve. The Performance Series has the signature HMF sound with industry-leading end cap and color options (see website link below for colour options available for your own ATV) giving you a completely custom look and sound. *Why not order your K&N or Uni Filter along with your Jet kit (or HMF Optimizer, depending on model of ATV) when ordering your exhaust to make more savings on recommended retail prices - another great deal at Sinister ATV/mc Accessories. All HMF exhausts feature: * USFS approved spark arrestor included * 304 stainless steel flanges, headpipes & S-bends * Tough T6061 aluminum (in some cases lightweight Carbon Kevlar) exhaust shells * Volumized, high performance glass wool packing * Significantly lighter when compared to stock systems * Made in the U.S.A.