I was wondering what kind of exhaust would be better for a 300EX that gives noticeable changes throughout every range.
Here are my choices:
- White Brothers R4 complete system
- White Brothers IDSX Supertrapp system
- Pro-Circuit T4 system
- Curtis Sparks X4 system w/ spark arrestor
Which one would you think would be the best. I will be trailriding too
I was thinking one of the White Brothers or the Curtis Sparks systems, what do you think though?


By the way have any of you ever heard of a Hotbox for a 300EX, I talked to a guy that has one and he said with a muffler, header, airfilter, and rejetting the carb it would make it have the same speed, acceleration, torque, and power of a 400EX, if it doesnt make it better than a 400EX, is this true?
Thanks

 

I would get a White bros. pipe. If your "hot box" cost about $2500 I would beieve you could hang with a 400, if not I'd say "NO".

 

Ok, anyways though, what kind of White Brothers pipe would be better for trail riding, hillclimbs, also I have no idea about the hotbox the guy has. I think im going to buy his quad though, he must have an expensive one, he said it could be like a 400EX with a new exhaust system, air filter, and rejetting the carb.
What does everybody else think about the hotbox/exhaust system?
Oh and by the way in the exhaust Im looking for noticeable imporvement in all ranges. The cost doesnt really matter, considering they are all basically the same price.
Thanks

 

Have you ever seen the exhaust shootouts for the 300ex. Almost all aftermarket pipes will increase performance about 1/2 to 1 1/2 horse. (unless its a cobra then minus 5 horse) They do however improve the torque range and make for a stronger more ridable powerband. If some one told you that by piping and jetting a 300ex will give you 400ex power then you should never talk to them again and dont even think about buying anything from them . A 300ex has 17 horse and a 400ex has 27 horse.

 

No, they said they have a hotbox on it, and said with the hotbox if you put a header, muffler, airfilter, and rejet it would be like a 400EX. I never heard of hotboxes so thats why I was wondering about it. So can a 300EX with a hotbox, header, muffler, filter, and rejetting hang with a 400EX is my main question. Thats what the guy told me atleast, I just want to see if it is true.

 

Also what would be a better exhaust system, Curtis Sparks X4, or one of the White Brothers I listeda bove, and if it is a White Brothers tell me whick one would be better for noticeable power throughtout all ranges.