Saw it while browsing for random KLX parts on ebay. Figured that I may as well tell you guys, since i'm not interested

Two Bros slipon running for 250 USD.

http://cgi.ebay.com/ebaymotors/Kawas...spagenameZWDVW

Hopefully it doesn't end too far from that :P

 

You can get a brand new HMF for less than that.

 

Where,

I didn't see one listed on their site.

 

Every time I see a 2-bros. pipe I wonder what the designers were thinking. I think theylook short, fat, and stubby looking compared to the other available pipes. And the msrp of $362 or whatever, no one in their right mind would pay that much just for a slip-on.

 

I got the 2 bros for $313 shipped a couple months ago. NO regrets. IMO its the best looking pipe out there. May be a little expensive for a slip on, but its exactly what i wanted and wouldn't trade it for anything. Sounds great, and can definatley feel the difference in power. Build quality and fitmentis great too. A hell of a lot lighter than the stock unit too. I'm happy running the stock header cause im going with the theory that the stock header gives you a little more low endtorque than an after market header or full system. All i can say is wheelies come up, and stay up, a lot easiernow that i've got my2 bros.

 

that's just a theory. no one has proven that. I hear this a lot on this forum, but when I had my DRZSM and was frequenting that side of the forum world, anytime anyone mentioned buying just a slip-on for their DRZ, the guys would laugh at them and tell them they were pretty much just wasting their money. Have you seen the size of some of these headers coming on new KX's? If smaller headers are the way to go, you'd think the factories would be putting them on their MX bikes. I just don't get it why people think this tiny header on the KLX is a good thing.I had a full BG on my KLX and it would hit redline instantly while still providing better lowend than stock- by far, it wasn't even close. I've come to the conclusion that one guy typed that theory and a lot believed it and those people just don't know better now that it is inaccurate. Here's an interesting writeup on the KLX, read what this pro has to say about the oem KLX header.

http://www.motorcycle.com/products/s...-mods-3510.htm

 

I'm not gonna argue with you because I know that is all you are looking for.

 

did you even read the article? you gonna argue with a professional? you can't argue against a proven fact.

 

Smaller diameter producing more low end and a larger diameter producing higher end whether it be intake manifold or exhaust manifold is an indisputable fact. It is scientifically valid and has been proven in real life as well. Hot Rodders have known this for years. Any engine builder will tell you that. Ask the guru Kevin Cameron. Ask any engineer that works for Edelbrock, Hooker, Vance & Hines, Kawasaki, Honda, etc etc etc. Or do any google search like "smaller headers and low end torque" or something to that effect and you will get plethora of hits supporting this FACT.

I work for Acura, a division of Honda Motor Corporation. Our engineers painstakingly design variable flow manifolds that work at all RPMs. The runners for low rpms are designed with small diameters and the runners for high rpms are designed with larger diameters. A butterfly valve switches back and forth depending on the rpm.

Now I'm not saying that the skinny stock header on the KLX does indeed provide more low end than a fatter aftermarket like Muzzy & BG. In theory the smaller diameter should. However in reality, I believe the inside of the stock manifold is pretty rough with crappy internal welds and very rough finish, restricting flow while the afermarket is much smoother inside. Does the smoother finish overcome the low end benefit produced by the smaller diameter of the stock manifold? Maybe, maybe not, but my gut tells me yes.

 

the KLX is far from a dragster or high horsepower producing Acura V6. I'm sure length of header, flow from intake, and overall horsepower from the engine has something to do with your theory. The oem header is very restrictive not just in size, but from bends and internal messy welds as you statedthus negating any low-end theory over a nice full system. That article speaks for itself. Each time I find someone defending a slip-on I just have to shake my head and say to myself- WAKE UP AND STOP BEING SO NAIVE!!! Heck, I nearly bought into that theory. But it just isn't logical to think a tiny straw sized header is going to be better for the bike than a nice smooth intricately cut aftermarket larger header. I'm gonna stick Roeseler's theory that the oem pipe is pretty much junk and needs replaced because of it's craftsmanship and size. Every time someone tells me oem headersare so awesome, I ask them why pros like RC and Mc never used the awesome oem header pipes if they flow so awesome? To each his own I guess.