Is this foreman pipe worth the $

[Firemonkey]

I was looking to amping up my foreman es 450's performance.  Is this what I need 

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=110217430361&ih=001&category=43978

? 

If not what's the best pipe, jet combination.... what performance enhancement can I expect.  I'm strictly a mudder and I currently am turning 27" Vampires.  Wouldn't mind more torque.  Thanks for the help

[Mars]

I've never had an HMF on a Honda but they have done well on Suzukis. They tend to be a bit loud. Torque is mostly you will get with a slip on. You will have to loose the air box lid to get the most out of the pipe which may be a problem for mudding. The Foreman is not tuned for revs it has always been a great work horse.