Not FZ6 specific, but more sport bike in general;
When looking at full systems be sure you know what your getting into, do some research. Most stock systems are made of titanium, only the more expensive aftermarket ones are. If you replace a ti system with one made of steel you'll gain weight.
Bruce
Stainless Steel, not Ti is the most common material for exhausts.
All of the exhausts I've replace over the years have been better, if not much better than the stock system. All of them that I've bought have been much, much lighter, made more power and most have been only slightly louder.
Yes many cheap exhausts are waaaaay too loud, expensive ones for that matter. It is really up the buyer to figure out what is important to them.
For example, the Akrapovic I had on my FZ made, at peak 2.5 more hp, but the mid-range was improved. With db killers it was as quiet as stock, and with db killers out was not stupid loud. It weighted 6 lbs less than stock and looked much better, IMO. So for me, it was a very good value and worth the cost. The stock exhaust looks like a toaster oven and sounds like a sewing machine.
The thing is, if the MFGs made better looking exhausts few would be removed; ie: FZ6 and the new FZ1. Exhausts have sex appeal for riders, and most stock ones are more like rag wool socks than silk stockings.
Okay and this is all from the owner of one of the worlds fugliest motorcycle mufflers.
