[Fabspeed Motorsport]

Originally Posted by PiK

Just received my HJS downpipe. Are you guys replacing clamps and a gasket ring for a new ones?

http://www.realoem.com/bmw/enUS/show...diagId=18_1203
02 Screw clamp 1 18307606136
03 Gasket ring 1 18307581970
04 Screw clamp 1 18307620349

You don't "have to" but it is a good preventative measure.