Jetting for stock 450r no lid, no end cap.

[Jonas]

What is your estimate on the best jetting for a stock 450r without the airbox lid and without the spark arrester end cap.

[wvspeedfreak]

175-180

[Jonas]

has anyone actually run this combo?

[wvspeedfreak]

I did.I ran a 175 main.I now have a slip-on and am still running the 175 and the plug looks perfect.

[Moto92]

180 main, 185 when you add a pipe

[hondaryder42]

i can double check if you need, mine runs very strong w/ k+n hrc end cap, lid with many extra holes and about 155 jet

[Jonas]

175 main or so.

what about the needle and slow jet?