www.fourstrokeworks.biz

 

Yeah, actually, the FSW header just does touch the oil line on my '07. I posted about that somewhere else on the forum and had intended to call FSW and see what they recommend. I think I'll do that today now that you remind me. Also the header is larger diameter than stock and there's not much room between the exhaust port and the frame, making it a bit touch to torque down the header bolts. I had to use a 1/4 " extension and socket.

 

Please keep us posted. I'd like to install a bigger header.

 

WHY tho

the FMF POWERBOMB is the same price

and its known to fit

http://cgi.ebay.com/ebaymotors/FMF-P...Q5fAccessories

 

Is it also 1.5" diameter?

 

Staintune do a full system but will cost $$$ for you guys in the USA. You get what you pay for though. Developed for Kevin Doyles winning Thumper Nats Team, 40 rwHp KLX250 anyone?

"Kawasaki KLX250 & KLR250 Models
KA MS KLX 25 09 2008 onwards Kawasaki KLX250 "S" Sports race muffler (Does not have removable restrictor) Each Bright Matt $640
KA MS KLX 25 1984 to 2007 Kawasaki KLX250 Sports race muffler Removable Restrictor Each Bright Matt $640
KA HS KLX 25 1984 onwards Kawasaki KLX250 Big bore race header Each Bright Matt $300
KA MS KLR 25 1984 onwards Kawasaki KLR250 Sports race muffler Removable Restrictor Each Bright Matt $640
Kawasaki KLX300
KA MS KLX 30 1996 onwards Kawasaki KLX300 Sports race muffler Removable Restrictor Each Bright Matt $640
KL HS KLX 30 1996 onwards Kawasaki KLX300 Big bore race header Each Bright Matt $300
"

http://www.staintune.com.au/docs/pricelist.pdf

 

No you don't.
There's no magic in the KLX exhaust, I don't care who makes it.
It's $10 worth of tubing, $40 labour, and $400 mark up.

 

What about the countless hours of R & D and prototypes left in the bin. The Staintune isn't just some tubing welded together. A special effort was made to get the best from the KLX 250 with a few 'other mods' The result, nearly 40 rear wheel horsepower, and that was back in 2000.

BTW how is your TIG, MIG welding, or perhaps your skill with stainless steel. Someone has to pay for those skills.

 

>40 rwhp, with a stroker kit. good luck finding that now a days, at least state side. ive seen a write up about that bike some where, it was far from stock.

 

The Kevin Doyle KLX didn't use the stroker kit.
But it did have the kawasaki 300 kit, I think. (same stroke, just bigger bore) and a whole heap of other stuff.
Cams, piston, valves, ignition etc etc etc. I think.
Read about it somewhere.
Oh and it did use a Staintune exhaust.

Staintune make a fine product even though its a bit expensive.
Looks horn.
Stuck out a bit far for my liking and for me that would mean it wouldn't look horn for long.

Anyway, exhausts on there own do very little in the way of extra power.
If you're going to open it up at one end, at least do the other end a jet accordingly. And then any exhaust will do the job.