Does anyone know which exhaust is better the Hetrick Racing or the Maximum RPM.

http://www.hetrickracing.com/miniexhaust.htm

http://maximumrpm.com/dinli/parts/zoom/KOSOEX90.html

 

I ain't touching this one. But I use one like Hetricks and have been very pleased. Either company will treat you well.

Also with WRH's, your battery may still fit under the seat.

 

If that was the choice, then the Hetrick pipe would win. I may be the only person who has tried all 3. I have a slightly used KOSO but it is not installed on anything currently.
Maximum RPM touts huge RPM numbers when you free rev it. But... you have to get there first. I feel the Hetrick exhaust offers more tunability when upgrades are added later. The WRH pipe was built for the Polaris and often copied by others.

 

The Maximum pipe isn't the easiest pipe to tune your engine to like Billy said but... we are getting more RPM's out of it than most of the others. Which pipe to go with? Depends on just what it is you are looking to do and how your rider manages the throttle. If you are looking to TT or if your rider will hold the throttle rather than being in and out of it for MX, the Maximum is a good choice. However if your rider isn't keeping the engine in the pipe, maybe the Hetrick or WRH pipe is the right one. Like Mark said earlier, all 3 are good quality and all 3 vendors will do you right.

 

We run both pipes we run MaxRPM on the Hetrick. We use the MaxRPM on highrev locations and Hetrick on lowrev. Both work great

 

We run the Hetrick pipe on our XC quad. Seems to work great all the way thru for him. It was a huge difference when you add all the mods to complete the set up.

 

The Koso/Maximum RPM exhaust may be the only one available at this point so that should help you narrow it down.

 

samson
are you pretending to me me again !!!!

Mark

 

Regardless of which pipe you get, please remember that it isn't a bolt on and go option. You'll need some extent of clutch mods and most definitely re-jeting will be needed.

 

Beats the alternative! [img]i/expressions/face-icon-small-blush.gif[/img] [img]i/expressions/face-icon-small-wink.gif[/img]