What pipe should i use on a 91

[furywife04]

Hey guys i just got a ys 91 and im trying to decide if im going to use a mp2 or sb 16. Let me know what you guys are running. Thanks :dontknow

[RPM 1.5]

Hey guys i just got a ys 91 and im trying to decide if im going to use a mp2 or sb 16. Let me know what you guys are running. Thanks :dontknow
Get a SB16 very good combo nice and quite and has very good power :smokin: :happyd
Ray

[Hardcarve1]

I have the MP2 on the YS91 and now nothing about the other.
Things that come to mind about the MP2 is
It's bloody heavy, as much as the SB16 I don't know.
When mounting to the MP2 to the YS motor drill and tap grub screws on the muffler header that lock the engine mounting screws and stop them from rotating out.
The MP2 may crack the engine case in a bad crash as it's a one piece unit.
Just my thoughts.
Alex