What does each 4-stroke header do: PowerBomb, Hi-Flo, SX versions?
This year we've added titanium headers to the mix. We have something to suit everyone, from someone looking for a fair priced replacement all the way to that person looking for that factory titanium header. Here are your choices to choose from and why.
Material
We offer our Hi-Flo and Powerbomb headers either in stainless steel or new for 2002, titanium. Our stainless steel headers offer you a lower priced header with increased durability compared to our titanium versions, because of the material and its lower costs and MIG and TIG welding. Don't let the lower price fool you into thinking they won't perform as well as the titanium versions though. These are modeled identical to the titanium headers and use the same CNC benders to insure proper fit every time. Our titanium headers are completely TIG welded and shave off pounds when compared to stock OEM steel headers. Since titanium is a higher grade metal, these headers are priced higher compared to our stainless steel versions. You don't get more exotic then titanium.
Hi-Flo vs. PowerBomb
Our Hi-Flo header is an upgrade to your stock header. We've taken the stocker header an improved it to the point that we're not drastically changing the powerband or losing power over stock.
On some models, like the YZ400 we alter the routing so that it's tucked into the bike better so that it's less vulnerable to damage and so that you can change the oil filter without having to loosen or remove it.
Our Powerbomb header takes it to the next level.
The Powerbomb chamber has two functions. One it acts like a pre-muffler to knock down the sound level a bit and two increases power by increasing the rate in which the header can flow. When the exhaust enters the chamber, it expands and then cools which causes it to contract. This expansion and contraction actually speeds up the exhaust through the header. It also has a scavenging effect on the exhaust port, which will let a fresher air and fuel charge into the cylinder for a more efficient burn. This also creates even more power.
Don't be fooled by larger diameter headers increasing power everywhere. With a loss of backpressure at the exhaust port you will lose low end power in order to gain top end. Both the Hi-Flo and Powerbomb headers increase power throughout the entire power band.
SX Headers
For a few select models we offer a supercross (SX) header version. By using a smaller diameter header we can increase low and mid range power by increasing the amount of backpressure at the exhaust port.
This works great for tight woods riding, supercross type tracks or for someone looking to boost that bottom end.
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