so ive got an 06 kawi bayou and since i dont have a car to do anything to i thought i would look into the performance stuff for my quad. well being that its a 250 untility quad there isnt much in the after market world for it, actually i couldnt find anything. so i had the correct material laying around and started thinking, i can make a pipe for it. well i looked at my neibors trx450r for ideas on a pipe. its stepped like 4 times so i figured what the hell why not. so i made a tripple step pipe. it starts at 1 3/8" at the head, then goes to 1 /12" then to 1 5/8" and then to 1 3/4" shortly before going into the muffler. the muffler is a 3" OD with a drilled center tube that i packed with steel wool. it works rather ell. my buddy said it sounds like a 450r with a pipe kit now. while i had the panals and **** off i also threw a nice 3" k&n filter in it. its def faster no thats for sure.

stock.....




mine....

 

Haha nice bro!

 

Looks pretty good!

 

Looks cool, any performance increase?

 

Thanks and yes there was def a gain. I have 2 of these quads (one after the other in terms on vin #'s) and when my bro rides the other one we always will race or what not when we are out riding and he would always pull on me being that I weigh almost 100 lbs more then him. Wel now with the intake and exhaust on mine I pull him like he use to pull me. U can also just feel the difference in general. Its got a lot more get up and go.


Mike

 

Bad ***, What did you use for the head flange, old one?

 

i used the old clamp and wedges but the pipe is all new. for the end that gets pressed up against the head i slipped a 1/2" section of 1 1/2" tube over the primary 1 3/8" tube and welded it on the sealing side. then sanded the weld down flat so it would seal against the gasket.


mike

 

Nice work it looks really good, i'm liking the muffler

 

thank u sir.


mike