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Old 04-11-2011, 06:14 PM   #1
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Location: south utah
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Cool gearing and warrenty

Hello everyone! Ive enjoyed reading this site and joined.(jeep newbie) Need some feedback and or advice.Bought a 2010 unlimited sahara with 3000 miles from the dealer,great lookin jeep! (and thumbs up from wife)
Already had factory installed mopar (rubicon express) 4.5" lift and mt 35"
tires.However dealerships think about looks and not performance,yep u guessed it 3.73 gears! in town and flat hiway is ok,but i live in mountainous area at 4500ft and soon to be doing light towing! i assumed the gearing would have been done.Dealership says they could only go with 4.10 option,i dont think its worth it! I wood like to go 4.88 or 5.13. it would void axel warrenty,i went with the extended and dont think i could handle the 3.73's that long! i would also think that the lower gears would be easier on truck with that lift and tires thats quite the change from stock. Any input would be greatly appreciated.

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Old 04-11-2011, 06:29 PM   #2
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Welcome to the forum.

Yep, you want new gears. I suppose you could have some axle warranty issues, but, frankly, you already do--those 35s you're spinning will affect your warranty coverage. The fact that they're dealer installed makes no difference. You might want to check to see if you have any driveshaft problems too. Take a look at this article.

Do you have an auto or manual transmission? It makes a difference as to gearing. Here's a good chart that helps pick the proper gear ratios for a JK. If you have a manual, it looks like 4.10s would be sorta-okay, but not really great.

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Old 04-11-2011, 07:06 PM   #3
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I have a 2010 6spd - had 4.10s on 35's and went to 5.13 ... Never looked back - best money I spent
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2010 Rubicon 6spd - 35" Mud Countrys, 4" RC X Series Lift, Tom Woods Driveshafts, 5.13 gears, ARB Diff Covers, River Raider Breathers, AEV Snorkle, AEV ProCal Module, 12.5k Winch - Drive it like you stole it
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Old 04-11-2011, 08:41 PM   #4
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Location: south utah
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gearing

Thank you gentleman for responses! I did some checking and with that 4.5" kit there was the corresponding driveshafts installed,and i didnt notice any binding.I beleive the dealership does the lift warrenty since they installed it not chrysler,also have that on paper! kits supposed to handle 37" tires,although front dana30,not sure on that.
It is an auto. The way i look at it thats five years of grittin my teeth,the hell with axel warrenty,i think ill go have it done by a gear shop!

Any one know what the cost is of upgrading the dana 30 front compared
to swappin out with 44! yes i was lookin for a rubi,they had a deal on a black one,southern utah summer no way!! ha!
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