hadlan10 wrote:Hi
I have a fzr600 3HE bike which requires a road exhaust, On Ebay there are quite a few YZF 600 R6 exhausts at good prices, will these fit the FZR
Regards Keith
Don't buy the YZF600 header if you plan on doing the mod mentioned in the link above. YZF600 and the YZFR6 are different bikes, the link that FasterThanUr posted talked about the R6 header. It has to be stretched a few inches as the link says
The YZF600 header doesn't need to be stretched between the exhaust runners 2 and 3, it slips into the head easily since the bikes both have the same engines, it also has the same runner diameter as the R6 header, but it isn't stainless steel like the R6 header is.
With the YZF600 header you will have to bend the muffler end of the header to where it's closer to the ground, otherwise it can be forced-fit, BUT the tip of the header touches the rider foot peg. If you bend it down (nearly impossible while on the bike) it clears fine.
R6 header also gives you more ground clearance than the YZF600 header. R6 header is probably easier to bend and you have more ground clearance, and it is stainless steel so it won't rust, but you would have to weld in order for it to be stretched, unless you want exhaust leaks on runners 2 and 3.
YZF600 header doesn't involve welding, it's coated black from the factory to prevent rust, but doesn't prevent rust as well as the stainless header. If you have a buddy at an exhaust shop, they might be able to heat up the header a bit to bend the tip down an inch so it doesn't touch your foot peg.
I acually have two YZF600 headers, I'm going to try to turn the other one over and stand on the bottom side to see if my weight is enough to bend it as far as it needs to be. I also have the R6 header if you would be interested in that, I'm on the fence about putting it on my bike, let me know if you still need one, I'll sell either one.
So to sum everything up.
Both are the same diameter, and are a hair larger than the stock FZR header, and both also have the more efficient 4-2-1 design( FZR is 4-1)
Both need bending, YZF600 just doesn't need to be stretched from left to right, only bent down
R6 header needs welding, YZF600 header does not need welding, only bending
R6 header is stainless and won't rust, YZF600 header is coated black and will rust if the coating comes off
R6 header has more ground clearance than the YZF600 header, YZF600 clearance is ok
Hope this helps