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Discussion Starter · #1 ·
I have owned the BiG Red Honda 3 wheeler, 1986 250 Honda 2 wheel Drive, 1993 Honda 300 Fourtrax 4X4, and now own a 2004 Honda Foreman 450ES 4X4 and have generally just rode the crap out of them stock and never used any type of after market performance product. But have noticed a lot of people using K & N Air Filters on their machines. I was just wondering at over $50 bucks, does this product really increase performance?
 

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I have the same question plus...

How much does a clutch kit help?

How much does an HMF exhaust help?

What about OEM 135 jet? Explain more about the size of the jet?

What else can you do to a 450 to increase performance? What's the best bang for your buck?

Thanks in advance....
 

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The K&N doesn't necessarily give you a ton of performance, but you should
never have to buy another air filter again. The allow more air flow than a
stock air filter.
 

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QUOTE ("djh1121":1x28c31w)
I have the same question plus...

How much does a clutch kit help?

How much does an HMF exhaust help?

What about OEM 135 jet? Explain more about the size of the jet?

What else can you do to a 450 to increase performance? What's the best bang for your buck?

Thanks in advance....
Im not convinced yet on the clutch kit, most say its a great mod, I dont like it that much. But you do the jetting, hmf, and a good filter, and you will see a difference, its worth it.
 

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from what i've seen the filter does not do any good without the pipe but combined with the pipe and the jet kit you do get a lot more horse power
 

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I just have a K&N on my Foreman and after I installed it I noticed that the bike wanted to "breathe" easier. Also I noticed that the acceleration was faster.
 

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The clutch kit helps alot when you have bigger tires and like swampy thick mud. Alls it does is delays the clutch from grabbin by 500 or so rpms thus letting the engin get more into the power band thus giving you more power when starting out.
 

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K&N filters are nice but you almost have to get a exhaust and a jet kit to feel the power increase. the clutch kit does help a great deal and i am very pleased with mine. i think HMF pipes are one of the most high quality aftermarket pipes out there, they give you a little more power and also sound great. for the jets, the bigger the number the bigger the hole in the jet, the bigger the hole in the jet them more gas goes through, the more gas that goes through, the more power you will get. when you get a filter and exhaust they will make more or less air flow so you have to change the jet sizes to get the most power out of your 4wheeler. there are some other things that you can do to 4wheeler but these are about the only mods you can do with out getting into the big $$$.
 

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Discussion Starter · #10 ·
k&n plus the jets

I assume by a jet kit you are talking about a carb modification - sounds like a way to burn more gas. My Foreman does not get the best gas mileage in the world now, so I am really sceptical about putting a jet kit on.

If the Jet Kit is not for the carb - excuse the ignorance!

Critter
 

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Very well said MadMudder!
 
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