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Jetting    Tuning&Exhaust:99-05 non cal

Started Jul-20 by steve (sbpriestley); 500 views.

From: RCCola45


If you Cobra pies are slip-ons then you would most likely not have to change jetting.   It would be good to check.   Recommended stock is 17.5 pilot jets and 112.5 for the front and 110 for rear.    If you order the jets make sure they are the small Mikuni jets.   They can be gotten at most places that work on Harley bikes or ordered from like Phat Performance.    Don't let the mechanic talk you into anything other than Mikuni jets ... they will try and sell ya a kit that is junk.   The 4 jets I posted should cost ya maybe 20 bucks or so.   

As far as you having a mechanic do it ... click here for step by step with pictures that most everyone here used to start working on there bikes.

  • Edited July 20, 2020 3:04 pm  by  RCCola45
Sick Mick* (quick_mick)

Without knowing what's in there now, it hard to give you a recommendation. Like RCCola says, it's easiest to stick with Mikuni jets....but most shops will sell you an expensive "kit" that costs about $75, then throw away $60 of the kit.

With that said, being a little rich isn't going to hurt anything. Just ride it a while, then check the plugs. Usually a slight PMS adjustment is all that's needed.

steve (sbpriestley)

From: steve (sbpriestley)


Thanks for the input. I got the same numbers from the knowledge base that I checked out   That seems to be standard   I thought maybe there was something different. I was told that ill probably only need to change the main jets .is this true ?

Sick Mick* (quick_mick)

As long as you stll have stock pilots.....yes


From: smilermike


yeah been here 10 years, i don't do songkran! that's for crazy people, but slowly dyeing off thank god!

Im up in the north east "Udonthani"  Outside of the cities its ok to ride, but, you have to still have your wits about you . Defensive driving comes to mind 555


From: RobertS0307


Also, if you change the jets be sure to reset the PMS, I think factory is 2 and a half turns from lightly bottomed.  Though gotta admit don’t know why you would want to change them .

In reply toRe: msg 8

From: RobertS0307


Also, is your air intake stock or aftermarket?  That will also affect the jet size you should use.  

Sick Mick* (quick_mick)

Stock jets are what they are....the carb is tuned to the lean side on a stock bike. Simple tuning will cure it......no need to mess with jets.