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sioux city, IA, USA
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10/29/2025
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kevin588127 Added a reply to 125/150/250/300 KTM/HUS/GG jetting thread
11/2/2025 4:09pm The JD jet kit showed up early so I threw it in before heading out today. Night and day better than what came in the bike. The bike idles great and transitions well into the mid range. The jetting that came in it was not what is listed in the manual. It had a 25 pilot, stock needle was in...
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FGR01 Liked a reply to forum topic 125/150/250/300 KTM/HUS/GG jetting thread
11/1/2025 5:55am
If you want to mess with the Mikuni, start here. I've always used 38:1 or 40:1. But 36:1 should be pretty close. If anything it will lean everything out just a hair. Slide 5.0 Replace jet block gasket with JD Set float at 8.5mm Needle jet S-4 Needle 42-74 (Or possibly 43-74 as it gets cooler, I'd order both) Clip-2 35 or 37.5 pilot 540 Main If you want to jump right to a PWK, either pre-jetted from JD or this are good starting points. I prefer to use the 2016 reed block manifold with the PWK for proper fit...
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kevin588127 Added a reply to 125/150/250/300 KTM/HUS/GG jetting thread
10/31/2025 6:09pm Bike is stock, 35 hours. Think even the piston is original. C12 mixed with pump 91 50/50, 36:1 dominator. Same as we run in our 85 and supermini.
kevin588127 Added a reply to 125/150/250/300 KTM/HUS/GG jetting thread
10/31/2025 9:23am I fall into both categories. I don't mind tinkering to get things right but if I can find a setup that will allow the bike to run well and not have to constantly mess with it, I'm all for it. I have a lot of experience with Mikuni VMs on lots of different 2 strokes over the years. I have...
kevin588127 Added a reply to 125/150/250/300 KTM/HUS/GG jetting thread
10/30/2025 11:38am Thanks for the reply. I didn't find the JD kits to be any improvement on our 85s. Guess I should have gone with my gut and just waited for the slides to be back in stock. I'll definetly give them a try though now that I already bought it 😞
kevin588127 Added a reply to 125/150/250/300 KTM/HUS/GG jetting thread
10/30/2025 11:34am Ill try that for this weekend. Do you find the recommended jetting in the manual to be close when utilizing stock carb components? We are coming off of MC85s and the recommended jetting was always a bit rich. I love the pwk carbs and am really tempted to swap this one over.
kevin588127 Added a reply to 125/150/250/300 KTM/HUS/GG jetting thread
10/29/2025 11:32am Just picked up a 2021 MC125. Bone stock and has a pretty good 1/4 throttle bog. I was ready to pull the trigger on the parts for the setup in the opening thread. JD is back ordered on the slide. I found several favorable reviews on the JD jet kit so I ordered that and a jet block gasket. I...