I want to put a new exhaust on both my bikes (Yamaha YZ 125 and Aprila RS 125). On my Yamaha YZ 125 I want a FMF-SST 2 stroke pipe with a SST 2 stroke silencer. I was wondering if an amatuer like myself could intall this pipe or does it need specialised mechanical knowledge (and tools). On my Aprilia RS 125 I was going to get Tyga 2 stroke stainless steel chamber and a 2 stroke carbon silencer. And I have the same with this one, I don't know if I will have the capability to install it or not. Does anyone have any good or bad comments about the 2 above exhaust systems? Thanks!