Author Topic: 2006 CR250R Honda Keihin carb upgrade  (Read 1785 times)

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Offline oppenheimer77us

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2006 CR250R Honda Keihin carb upgrade
« on: January 11, 2013, 02:04:17 AM »
I was hoping for some feedback from anyone with experience fitting a PWK airstriker to a late model CR250 (2006). I just ordered the JD kit (I have had great success running their needles) and will go with their baseline jetting specs. I ride at 2000=3000 above sea level for the most part and the motor is mostly stock with the exception of an FMF system and V-force reed. I have been running high test pump gas and Maxima Super M at 40:1. If anyone could provide feedback about installation, jetting, or any other issues it would be most appreciated. TIA.

Offline luthier269

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Re: 2006 CR250R Honda Keihin carb upgrade
« Reply #1 on: January 11, 2013, 05:45:08 AM »
We have a 2005 cr250 and we put a 38mm air strike carb on it and it made a world of diference. Ours came with a different throtle cable. We are at sea level jetting has been good we could use a leaner pilot jet but been to lazy to change. We are running a FMF gnarly pipe and V force reeds.
Motocross is a real sport all the rest are just games

01 cr125
05 cr250

Offline 800screws

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Re: 2006 CR250R Honda Keihin carb upgrade
« Reply #2 on: January 11, 2013, 07:08:03 AM »
whats the actual benefit and results from running the pwk?

Offline luthier269

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Re: 2006 CR250R Honda Keihin carb upgrade
« Reply #3 on: January 11, 2013, 07:48:48 AM »
The mikuni is very erratic and hard to jet consistantly. Also the kiehn gives it more bottom end. My son said when we put it on that it ran like a new bike compared to the old carb.
Motocross is a real sport all the rest are just games

01 cr125
05 cr250

Offline oppenheimer77us

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Re: 2006 CR250R Honda Keihin carb upgrade
« Reply #4 on: January 14, 2013, 12:12:36 PM »
Got the carb today and it came with several needles and main jets, if it ever stops snowing I will report my impressions of the carb swap

Offline oppenheimer77us

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Re: 2006 CR250R Honda Keihin carb upgrade
« Reply #5 on: June 24, 2013, 07:53:05 AM »
Well I finally got a chance to mount that carb and post my results. The PWK is simply an amazing bolt on for the CR250, I was already running an FMF fatty and shorty silencer, V-force reeds and had the Mikuni as properly tuned as I was able but what a difference putting the Keihin on the bike. Gone is blubbery, hard to jet feel of the stock carb, the bottom end response is off the chart better and it feels like a whole new bike. The low end snap is amazing now and the JD PWK kit was jetted spot on for So Cal, I would absolutely recommend this carb for any CR250 owner.

Offline Critta

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Re: 2006 CR250R Honda Keihin carb upgrade
« Reply #6 on: June 24, 2013, 07:10:09 PM »
can you get these for the 125's too?

Offline brazilian2stroker

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Re: 2006 CR250R Honda Keihin carb upgrade
« Reply #7 on: June 25, 2013, 03:34:04 AM »

Offline oppenheimer77us

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Re: 2006 CR250R Honda Keihin carb upgrade
« Reply #8 on: June 26, 2013, 10:22:56 AM »