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Old 08-29-2015, 05:56 PM
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Join Date: Aug 2015
Posts: 4
What axles do I have?

I have a 2009 JK X, 2 door. What axles and gearing do I have and do I need to get new gearing to accommodate my 33" tires?

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Old 08-29-2015, 06:01 PM   #2
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Location: Washington, DC
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My guess is that you have a Dana 30 upfront and a Dana 44 in the back. They have different shaped pumpkins, so it's easy to tell the difference. 44s are less round. As to the gear ratio, either you can find it on the build sheet, axel tags or you can count how many times the driveshaft rotates for each rotation of the tire.

'13 JKUR, Billet
'88 YJ w/ 4" lift and 33's - Gone but not forgotten
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Old 08-29-2015, 07:26 PM   #3
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Join Date: Jun 2013
Location: Inola, OK
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Post a picture of the front. Unless you or a PO has done some serious mods, you have a D44 rear and D30 front. You'll have to send an email to Jeep customer service with your VIN number requesting a factory build sheet to find out your gear ratio. Or you could jack the Jeep up and count the driveshaft and tire revolutions.

And you should be fine with 33's and 3.73 gears
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axle , axles , differential , gearing , gears

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