theory

Ok , you engineers , what is the design theory behind the last edition of exhaust being campaigned by the WSBK bikes ? Looks to me 60mm to 70mm then finishing into split 51mm tubing . The headers aren't equal length with the front header actually looping the long way around the rear header ...

I say "theory" because I don't think anyone has really proven the case :) One thing for certain, modern engine tolerances are so good that a prolonged break-in period is no longer required. How long is good enough is subject to considerable debate. Excessive heat and stress during early...