[GixxerF]

I didnt need any extra parts to install mine, but I bought mine directly from Delkevic and noted to them exactly what bike I had and what header I was using.

What header are you using? Because i had the stock header and i needed quite a reducer for the header to seal the gap.

[arsenic]

What header are you using? Because i had the stock header and i needed quite a reducer for the header to seal the gap.

Lets examine this post. You needed a reducer to install a part that was engineered for said bike?