I have headers fitted (cat-less and temporary one until strip down in winter), I've removed the centre stand (never used it anyway) and have just replaced my lasers with two brothers racing exhaust. However the down pipe that connects to the silencer is not the standard size (OEM is 54mm diameter). Diameter of pipe is 50mm and the diameter the the headers is 48mm. What gasket can i get for these (OEM gasket is 54X48X25mm). My lasers, when removed looked like they hadn't had a gasket fitted, just clamped.
What gasket do I use? This is my concern, or do i use putty and a clamp?