Join Date: May 2011
Motorcycle: GSXR750/1100W racer and GSXR750SP
Re: Building a 7/11 racer
Pretty much is not how i would put it.
This is not the stock system from a gsx-r 1000 2001-2004.
Its a yoshimura trs which has thicker exhaust pipes, the stock system may be even better to fit and most likely a bit cheaper then this 2nd hand yoshimura.
Stock headers are from titanium BUT titanium is harder to work on.
More fragile and difficult to weld (you need tig and argon gas on both sides of the weld to create a oxygen free condition).
Even so the stock system headers may weigh 1kg less then the stainless steel system but the stock mufflers weights more then the yoshimura one so there are no weight gains compared to the trs system.
But with some heating and stretching and some modifications (need to modifty the flanches and reweld the duplex tubes for example) it will fit.
Will do this in the course of this week and weekend.