My b-i-l Keith's exhaust fractured between the header pipe and mount.
He managed to repair it using a small length of flexible exhaust pipe with an inner diameter of just over 41mm. This meant he could use a standard TTR graphite exhaust gasket at each end. Ideally he needs smaller clamps.
Not sure that I like the exhaust finished in blue
His exhaust is here at the moment as Keith is road testing Steve's (Totally TTRs) brand new all-stainless steel exhaust (See Totally TTRs Facebook page for more info - https://www.facebook.com/TotallyTTRs )