Just get a OEM 135 jet from your dealer. It works alot better than the dj kit and order your filter seperate. The jet is only like $8.00
I just forgot to change it.eustis you say get oem jet yet it says u have dyno jet. do you not like the dyno jet, or oem is just as good and cheaper. i dont want something that is not as good just cause cheaper
The 450s have adjustable needles stock as well, Which will come in the Jet kit. The new needle will have a slightly different taper. Plus a new carb spring. These are things you can live without though.