[atinc]

Hi there,
i might buy a cheap exhaust from aliexpress.
Most of them are universal 51mm diameter.
Will it fit on 2014 duke easily? Thanks

Or should i leave the bike as it is

 

[KTMasean]

There are no universal exhausts for higher performing engines.
On our 390 engines there is only a (small) hand full that will perform as good as stock and only 1 or 2 that do marginally better.
TYGA's system is 1 of these, can't even think of any other.