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jadkins322 Added a reply to 125/150/250/300 KTM/HUS/GG jetting thread

3/9/2025 12:44am
Like i said, I don’t have a ton of knowledge on jetting. Just basic knowledge i guess to get something running decent. As far as the humid summer goes. Do you have any advice of which direction id be going from the recommended setup? Currently 50F and these settings work. Needle- 43-75 Clip 2 Main- 510 Pilot- 32.5 (could use...

jadkins322 Added a reply to 125/150/250/300 KTM/HUS/GG jetting thread

12/6/2024 12:06pm
Thanks guys. Awesome info from yall! I did see the pro x, ebc, and jetsrus options but didn’t know if they were true to size. Will get all those main sizes/ needles and report back after install.

FGR01 Liked a reply to forum topic 125/150/250/300 KTM/HUS/GG jetting thread

12/6/2024 12:02pm
I believe all the 510 I have are either ProX or EBC. They are also available on Rocky Mountain and other places in case you're already over there ordering needles, etc. Order a few sizes. I'd have 480-490-500-510-520-540 on hand if I was you. It will take a little tinkering to get it perfect and to adjust once humid summer comes. On the needle, the 2022 crank recall and ECU issue ended up causing me to use the leaner xx-75 series needles. The xx-74 caused a rich bog when opening the throttle on the 2023 Gasggas 125 I jetted. Others...
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AJ565 Liked a reply to forum topic 125/150/250/300 KTM/HUS/GG jetting thread

12/6/2024 12:02pm
https://www.jetsrus.com/a_jets_by_carburetor_type/jets_mikuni_4-042_mai… Mikuni doesn't have them that size so aftermarket is your only option. I've ordered from here and have zero problems. Also you need to adjust your powervalve when you rejet as it does change things. On the small bore bikes we were starting at 2.25 turns in from all the way out and adjusting from there if needed.
This forum topic has 1204 replies.

jadkins322 Added a reply to 125/150/250/300 KTM/HUS/GG jetting thread

12/5/2024 2:23pm
After some thought im gonna try to stay with the Mikuni. Im about 1000ft elevation. Couple more questions i have. Where can i get the 510 main? Should i go ahead and notch the #5 slide when i get it and go with a 30 pilot? What temps will the current recommended specs be good in? I have 30-32.5 pilots/...

jadkins322 Added a reply to 125/150/250/300 KTM/HUS/GG jetting thread

11/29/2024 6:59pm
Honestly don’t want to take it apart to check out the rod lol Im thinking just get the carb deal sorted and rip it till Feb/ March and rebuild with older oem crank and piston before the season starts.

jadkins322 Added a reply to 125/150/250/300 KTM/HUS/GG jetting thread

11/29/2024 6:55pm
It has 50 hrs and supposedly a new piston at 40 hrs. Its a single ring also. I just peaked into the exhaust port but the cylinder looks brand new/ vapor blasted so no telling what all has really been done. Might look up the VIN and see what it says as far as the recall goes. I guess ill...

jadkins322 Added a reply to 125/150/250/300 KTM/HUS/GG jetting thread

11/29/2024 5:46pm
Just got a 2022 Ktm150sx. Used to have a 2019 With JD kit and it ran good i thought but looking for the best setup i can possibly have on this one. Which way is more beneficial in yalls opinions, 1- AJ’s settings 2- Keihn 38 with JD kit or TSP kit?