Arctic Cat 400/500 (i) (04) HMF Exhaust

2004 Arctic Cat 400/500(i) Only

The 2004 Arctic Cat 400/500(i) instantly gained horse power once the HMF Slip On Exhaust systems were installed. With our recommended jetting specifications , we were able to see a 9% horse power increase over stock. And with all that extra power at your fingertips, it's like unwrapping a new quad right out of the box.

HMF Performance Series: The HMF Performance Series is specifically designed for utility machines and delivers the most horsepower & torque per dollar of any series. It was specifically designed to deliver maximum power gains throughout the RPM range. If you need to run quiet from time to time, the Performance Series accepts the optional HMF Quiet Core.

Penland Pro Series: The HMF Penland Pro Series was designed specifically for utility machines and GNCC Pro Level Competition. It features the TRM core that allows you to tune your bike for overall power or extra low end torque. The HMF Quiet Core is available if you need to run quiet .

Swamp Series: The HMF Swamp Series was designed specifically for quads that need pure, all out horsepower. Through the deep, muddy waters to the starting line of the GNCC, the Swamp Series blisters power that gives you absolute control. It features a 5" stainless steel exhaust and produces very little sound dB over stock. And with the optional HMF Quiet Core, most machines can see a dB decrease over stock!

Swamp XL Series: The cousin of the Swamp Series, the Swamp XL Series delivers the same insane power as the Swamp Series but with an unrestricted sound level. If you want to be heard tearing up the track or busting through the woods, the XL is the pipe your looking for. Also in a 5" stainless steel can, this beast will give you all the power and noise you can handle.

All HMF exhausts feature:

* USFS approved spark arrestor included
* 304 stainless steel flanges, headpipes & S-bends
* Tough T6061 aluminum or lightweight Carbon Kevlar exhaust shells
* Volumized, high performance glass wool packing
* Significantly lighter when compared to stock systems
* Made in the U.S.A.