After years of procrastination

Questions and Answers about the best carb and Head mods available for the KDX.
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treelimb
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After years of procrastination

Post by treelimb » 09:41 pm Feb 17 2021

I finally decided to aquire an RB modded OEM carb. From sending an email to and getting an email from Ron Black suggesting that I move quickly as the limited number of carbs he has will go quickly was about a day.So I mailed the money order that night. It took about 10 days to hear from him initially.
Turn around time was a week, which had to include the time it >|< took the money order to get to him. Incredibly fast! Extremely well packaged. Excellent and easily comprehended instructions on dialing it in. Beautiful carb.
I'll get it on this weekend and ride. I am very excited and looking forward to a different KDX under me ( or on me when I hit the ground) and will follow up with a report.
I am posting pictures so hopefully they'll show up.
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Re: After years of procrastination

Post by bufftester » 11:12 pm Feb 17 2021

Nice, I think you'll be pleasantly surprised by its performance.

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Re: After years of procrastination

Post by Goat » 04:59 pm Feb 18 2021

Cool! I think you’re gonna like it.
If you are on 200, I’d be curious where your jets end up for comparison sake.
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Re: After years of procrastination

Post by treelimb » 08:44 pm Feb 18 2021

For the Goat-

These are the jets Mr. Black installed and included.
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Re: After years of procrastination

Post by Goat » 09:07 pm Feb 18 2021

Looks like it started same as mine.
I did find a 42 was accidentally installed.
So far, I settled in at 150/38, clip 2. And she’s a screamer.
But am willing to fiddle a little more.
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Re: After years of procrastination

Post by kick » 09:58 pm Feb 18 2021

Glad you like the performance boost. I’m looking to purchase one myself.

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Re: After years of procrastination

Post by treelimb » 10:28 pm Feb 18 2021

So your verbage really threw me off referencing she's a screamer. I encountered a little flashbacking that was not necessarily dirt bike related. I know, that's what she said.

Man, I'm hoping Mr. Black got the jetting close as I'm kind of lazy. But then since I feel my KDX200 needs help, I will go through the steps.
I'm gathering that an rb modded carb brought your kdx to life. Was there a crap load of difference with the new carb? I know that's what I've read happens but I haven't actually corresponded with an actual carb buyer/ user. Anyhoo I'll do my best to post my results. I'm just beyond elated that rb- designs aka Ron Black and I established communication and that I now own the real deal KDX mod.

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Re: After years of procrastination

Post by Goat » 12:18 am Feb 19 2021

Sorry I can’t give you good before/after from a stock bike.
Mine was running poorly (no top end) when I bought it. So I went straight for the RB purchase without trying to tune the original carb. (Now that’s $380 of lazy!)
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Re: After years of procrastination

Post by SS109 » 06:11 am Feb 19 2021

RB's jetting is pretty close IME. I did end up up going one size smaller on the main and pilot and my bike runs crisp with no spooge.
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Re: After years of procrastination

Post by clappy379 » 10:01 am Feb 20 2021

I’ve tried reaching out to Ron without much luck to get one of his carbs, I sent a friendly follow-up after his initial response saying he’s only doing new carbs but haven’t gotten a response on committing to fulfilling a purchase. Crossing my fingers, I’m not too keen on other options for my 200 at least so far.

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Re: After years of procrastination

Post by treelimb » 10:05 pm Feb 20 2021

I got carb on and dang there is noticable difference. Started 1st kick. Pulled from 2nd gear uphill strongly. Sounds great. No where near the smoke I had before.
I'll know more after tomorrow's ride with young riders on modern bikes.Beyond expectations after my 2 mile ride this evening into dark.

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Re: After years of procrastination

Post by Goat » 01:31 am Feb 23 2021

I would tell you when I have mine just right, it’s wheel up in 3 gears. Always 2, and runs good but that 1/16th on the air screw makes it feel amazing. You know when you got it.
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