I waited and waited but a performance step header for our motorcycle never evolved. So... I made a custom step exhaust for my GSX-S1000.
The exhaust tubing is 18 gauge 304 stainless. I also have Akrapovic muffler, springs, and exhaust flanges.
The size of the tubing starting at the head and ending at the titanium/carbon fiber Akrapovic muffler is in this order: 1.5" to 1.63" to 1.75" to 2.38.
Each Primary tube slip fits into a collector and is held by two retaining springs.
I ordered some pre-bent and straight tubing. I did make a custom band saw and tubing holder to make all my cuts as precise as possible.
All of my Tig welds were completed with back-purged Argon gas.
As for the Akrapovic titanium/carbon fiber muffler, it fits a 2007 GSX-R1000. I cut 6" off the factory length to shorten it, and then I installed new pop rivets to complete its modification.
The total weight of my exhaust with the Akropovic muffler is 10.8 pounds. The complete stock exhaust weighed just over 22 pounds.
For a muffler installed exhaust, the sound is very deep and intimidating.
For an open header exhaust, the sound is very deep, very intimidating, and intoxicating. Goosebumbs and an "Ear-to-Ear-Grin" at 8,000+ RPMs! Just saying.
Now... I need a new base tune, because the A/F ratio is way off.
Next... I need a tune for my Nitrous. I cannot wait to get the motorcycle all tuned up.
Currently, I am undecided on installing the Akropovic sticker. I could have buffed/polish out the exhaust, but I don't see the point in a polished exhaust.
Thanks to "chr1s" for helping me purchase some Akropovic parts.
So far, my custom exhaust seems to be everything I wanted and needed for my motorcycle.