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Old 07-11-2018, 01:05 PM
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Lightbulb Looks like I知 upgrading rear axle shafts...

So I was having some wheel wobble on the passenger side, rear wheel of my new-to-me 2012 4Dr JKU Rubicon and when I noticed it, I assumed it was probably just a warped tire or warped wheel. It literally has brand new Fuel Battle Axe Aluminum wheels and brand new 285/70-17 Hankook Dynapro MT tires on it that the dealer put on to sell it less than 500 highway miles ago, which already had me fearing a warped Dana 44 axle shaft in the back of my mind as worst case scenario, but God forbid I said that out loud! Sure enough, upon further inspection (Always start with the simplest fix first! In my case: tire - wheel - axle) after pulling the wheel off and making sure it was in-fact round and balanced, I could clearly see that the rotor and caliper were NOT spinning true. It was WAY out. As a Machinist by trade, I was about to get a dial indicator out and check the runout anyway but after spinning the rotor assembly by hand I was able to see that there was no need for further inspection and that it was out by at LEAST 3/16 to a 1/4 on rotation (calibrated eyeballs of course). That translated into a VERY noticeable wobble with my 285/70-17 bolted to it. So much so that a random fellow Jeeper in a TJ was driving behind me down my street and when I pulled in to my driveway he was courteous enough to stop and tell me that it looked like my right rear wheels was about to come off!!! (He said he thought that the lug nuts were loose). This also explains the break squeak that I would hear at half rotations when coming to a stop, I thought I just needed new pads... Oddly enough, I never felt any vibrations, even on 2 hour interstate driving at various speeds... however - I am new to the Jeep crowd and this is my first Wrangler that I致e ever driven, so as a disclaimer; I cannot say that there wasn稚 any vibrations occurring because I致e obviously never felt a stock ride in this thing yet and I am used to daily driving my old 1998 Dodge Ram on 33 Cooper STT Pros that is now retired to be my hunting truck.

I知 linking in some videos of the axle shaft runout. The first one was filmed while driving (sorry for awkward view from rearview mirror while driving, hey I got creative...) the second one is the axle shaft assembly after I pulled the wheel off. Clearly evident when you watch the rotor...

Driving: https://youtu.be/dMYc65QUOSk
Wheel off: https://youtu.be/6NEssAf4jCA

So for time being, I went ahead and swapped the rear two tires to COMPLETELY eliminate the possibility of it being that specific wheel/tire (hey, even with the compelling rotor runout evidence, I致e seen stranger coincidences occur). Lo and behold the passenger rear wheel still wobbles like crazy so I know for a fact that it痴 my axle shaft. You know, process of elimination and all that jazz.

So, here痴 the reason for my post: Obviously I am now on the market for new rear axle shafts (upgrading both, even though the drivers side rear is fine). I have done heavy research like I always do when I need to fix or upgrade something and I am no stranger to axle shafts as I had replaced all front and rear Spicer axle shaft U-joints on my 98 Ram 1500 that I mentioned earlier (Dana 44 up front with Chrysler 9.25 rear), so I am no stranger to the task and I know that it痴 an easy swap to just replace the shafts. I知 not wanting to go all out and buy the most heavy duty axle shafts that I can find (stay under ~$600 preferably for a driver and passenger side complete kit). With that being said, I have been strongly looking at the 典EN Factory rear axle shafts (Rubicon Dana 44 w/ 32 Spline)
https://www.northridge4x4.com/fits/2...earing#reviews

Just about every aftermarket axle shaft I find is a tough 4-series metal and/or is Chrome Molybdenum and hardened steel, etc. so they all are pretty close to each other from my machinist perspective. However, I知 just looking for some input on different brands vs others (Ten Factory, G2, Yukon Gear, Nitro Gear & Axle, Revolution, the list goes on...) and what some of you guys are running and have had experience with before I pull the trigger on he TEN Factory kit. I am new to the Jeep lifestyle so I don稚 plan to be tackling Moab anytime soon but I will definitely be looking to weekend-warrior trail ride often and I am a major practitioner of 電o it once, do it right, so I will not be cutting corners on this build, that痴 for sure, and I want my daily driver Rubicon to be able to take what I throw at it and look good doing it. (Isn稚 that what we all want, lol?). Any input is appreciated! I need to order ASAP!!!

P.s. I知 actually kind of glad, in a way, that it wasn稚 my wheel or tire because I did NOT want to drop money on an already-new wheel and tire. I also think that this is my first case of 笛eep Parts High or JPH as the kids call it on the streets. I致e never been somewhat... ((excited?))... to have to throw money at my vehicle to replace something that痴 broken!!! It痴 an new feeling that the Jeep community has brought to me and it痴 quite confusing and if I tell my nurse wife, she値l probably commit me to the psych ward that she works at.... I知 glad we can talk about these feelings here. Oh well, at least I値l have some upgraded, more dependable rear axle shafts for when I switch to the 35 tires and 3.5 more inches of lift that I see coming in my Jeep crystal ball... ~~~

-eSCAPEist

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Old 07-11-2018, 02:52 PM   #2
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I had the exact same experience, right rear tire wobble that felt like an out of balance tire. Changed to the spare in a parking lot during a 450 mile trip. So same with the spare. Got home and pulled the RR tire and brake assembly. Long story short it was G2 replacements for me. All 4 axle shafts at once hopefully to never happen, fingers crossed as I do like to wheel some rocks.
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Old 07-11-2018, 03:36 PM   #3
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I would recommend Revolution Gear American made 4340 Chromoly shafts. They come with the bearing, seal and backing plate installed, all you have to do is screw on the wheel studs. Lifetime warranty which includes flanges.

That's what I put on mine and I wheel hard.
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Old 07-11-2018, 04:19 PM   #4
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I concur with cranbiz... revolution....
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Old 07-11-2018, 04:30 PM   #5
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Ten Factory shafts are cheap, especially after using the Northridge 4x4 10% off coupon. I’ve already bent one set that was replaced under warranty. Northridge customer service was helpful and processed the claim on my behalf.

If you have the extra cash, go with the Domestic produced RGA shafts.
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Old 07-11-2018, 05:19 PM
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Thumbs up

Thanks for all of the input so far! Keep it coming! Looks like Revolution is most preferred so far. I知 a sucker for American made parts too...
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Old 07-11-2018, 05:30 PM   #7
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Originally Posted by eSCAPEist View Post
Thanks for all of the input so far! Keep it coming! Looks like Revolution is most preferred so far. I知 a sucker for American made parts too...
I've got a set on order now.
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Old 07-12-2018, 04:29 AM   #8
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I got some recommendations a few months ago, and decided I wanted to go with revolution. When I started looking (and emailed Brandon with a couple questions) three months ago, they were out of stock on the rubicon rears. They're still out of stock, and now Brandon won't respond to my emails. So while I'd like to go revolution and recommend them, it looks like I'll have to go another direction.

Luckily, I don't have a bent flange (yet), so it's not urgent for me...
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Old 07-12-2018, 06:14 AM
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I got some recommendations a few months ago, and decided I wanted to go with revolution. When I started looking (and emailed Brandon with a couple questions) three months ago, they were out of stock on the rubicon rears. They're still out of stock, and now Brandon won't respond to my emails. So while I'd like to go revolution and recommend them, it looks like I'll have to go another direction.

Luckily, I don't have a bent flange (yet), so it's not urgent for me...
Thanks for the heads up... I actually just noticed that on their website it says that they池e out of stock for the Rubicon kit, like you said... that sucks! I値l try to email them and see if they respond. I値l post here if I find anything out. Man that痴 a bummer if I got all hyped up for the Revolutions and can稚 even find any!!!
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Old 07-12-2018, 08:45 AM   #10
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to long. did not read
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Old 07-12-2018, 09:24 AM   #11
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Blah blah blah... revolution shafts. Made in USA too.
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Old 07-12-2018, 09:27 AM
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to long. did not read
Didn稚 read but took the time to troll on the thread? Cool.

Yes, I did realize it was too lengthy after I posted but forgive me for not being that guy who clogs up the the forum saying 菟art brok wut fix? Also, I致e done extensive research looking for similar problems and I couldn稚 find anyone who has posted on here, in good detail, of the problem at hand. My intent was to create this thread so that someone else with the same problem can find it online by searching the same signs and symptoms and know what to do to fix it. I知 out here to help other people as well. Knowledge is useless unless it痴 shared.

But this might be too much for you to read also.
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Old 07-12-2018, 09:36 AM   #13
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Revolutions here. Make sure to get the made in USA ones.
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Old 07-12-2018, 01:01 PM   #14
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Originally Posted by Blort View Post
Ten Factory shafts are cheap, especially after using the Northridge 4x4 10% off coupon. I’ve already bent one set that was replaced under warranty. Northridge customer service was helpful and processed the claim on my behalf.

If you have the extra cash, go with the Domestic produced RGA shafts.
You are lucky. 10 Factory doesn't usually warranty bent shafts. I know several people who were told tough luck. Fortunately Northridge cares enough to do the right thing.


Non Rubi in stock on Amazon.
https://smile.amazon.com/gp/product/...?ie=UTF8&psc=1

Amazon has the Rubi too but they want a premium for those. I would wait for revolution to get those back in stock.
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Old 07-12-2018, 02:21 PM
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Update: The information that I’ve received today is that the Revolution Rubicon shafts are on backorder at the moment due to their vendors machine being down. ETA is the end of this month (end of July). That information is coming directly from Brandon at Revolution Gear and Axle as well as multiple distributors that have also spoken with Revolution today. The Revolution Non-Rubicon 30 spline shafts seem to be in stock from various distributors but I am in need of the Rubicon 32 spline shafts. Only time will tell...
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Old 07-12-2018, 02:27 PM   #16
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Thanks for all of the input so far! Keep it coming! Looks like Revolution is most preferred so far. I知 a sucker for American made parts too...
On a different note, make sure the nut / washer thing that holds the brake disk on during assembly has been removed unless your new wheels have a gap they fit into. Some aftermarket wheels will not bolt on straight if you don't remove that widget.
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Old 07-12-2018, 02:31 PM   #17
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Update: The information that I致e received today is that the Revolution Rubicon shafts are on backorder at the moment due to their vendors machine being down. ETA is the end of this month (end of July). That information is coming directly from Brandon at Revolution Gear and Axle as well as multiple distributors that have also spoken with Revolution today. The Revolution Non-Rubicon 30 spline shafts seem to be in stock from various distributors but I am in need of the Rubicon 32 spline shafts. Only time will tell...
+1 on Revolution.
FWIW it's not just the spline count that's different, Non-Rubis are equal length shafts, Rubi shafts are not equal. Make sure you know which side is short/long before you tackle the job.
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Old 07-12-2018, 02:40 PM
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On a different note, make sure the nut / washer thing that holds the brake disk on during assembly has been removed unless your new wheels have a gap they fit into. Some aftermarket wheels will not bolt on straight if you don't remove that widget.
See... this is what I知 talking about, right here. Thinking outside if the box! That is a very valid point that you made there that is so easily looked over. I actually already noticed when I pulled my wheel that all of the little 途otor stud locks (I知 calling them) that come stock on the wheel mounting studs were removed for my aftermarket wheels. However, this is exactly the kind of overlooked information that people are looking for when they come to these forums. Kudos to you for the attentiveness!
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Old 07-12-2018, 03:34 PM
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+1 on Revolution.
FWIW it's not just the spline count that's different, Non-Rubis are equal length shafts, Rubi shafts are not equal. Make sure you know which side is short/long before you tackle the job.
You are exactly right. This is an extremely valid point that I forgot to mention for anyone who hasn稚 attempted this before. Thank you for the input. Good info for those who would most likely look over this until it痴 too late!
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Old 07-16-2018, 05:54 PM   #20
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Welcome to the Achillies Heel of the JK rear D44. So far I've bent a set of Superior chromoloys (Foote Axle & Forge, out of business) and two sets of G2s. The first set of the latter 4WP warrantied, but they demanded to inspect them first. Fortunately I had a set of Alloys on the shelf, so I swapped them out and waited a month or so. 4WP had argued "We've never heard of this, you have a bent wheel...no?, then you have a bent rotor...NO??? Ok, then we have to inspect them." $80 to ship them to 4WP, they sent a new set immediately. Those bent in one fairly gentle trip to Moab. I didn;t even bother getting them replaced, they went in the trash and I kept the Alloys in service. They have been in there for a year or so and appear to be ok so far, but I expect they're one ledge away from the dreaded wobble. Next set will be Tens and we'll see how it goes. However, short of a full floater rear axle this is going to be your life for as long as you build it heavy & wheel it hard.
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Old 07-16-2018, 06:49 PM   #21
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I have revolutions, they're made in the USA and have a good warranty. Funny though I just bought new front revolution shafts, and they're stamped "foote". So I don't think they're out of business. Maybe just moved up to supplier status.
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Old 07-17-2018, 10:13 PM   #22
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Old 07-18-2018, 06:44 AM   #23
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+1 on Revolution.
FWIW it's not just the spline count that's different, Non-Rubis are equal length shafts, Rubi shafts are not equal. Make sure you know which side is short/long before you tackle the job.
+3 on Revolution Gear and Axle rears . My set of 4340 Revs got beat on at AOP a few years ago and a quick call , together with a video of the run-out I’d managed to do to BOTH flanges equaled a replacement set at my door within a week. Excellent customer srvc, USA made, they wheel and back thier products. Plus, they use 4340 steel. They also have bearings and races a,ready pressed on.
I also know the fabulous company, Torque-Masters , is also producing the rear JK axleshafts / same product schematics and they, too, are a company of thier word and back thier fine products made in USA. Good Luck.
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Old 07-18-2018, 08:18 AM   #24
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I have revolutions, they're made in the USA and have a good warranty. Funny though I just bought new front revolution shafts, and they're stamped "foote". So I don't think they're out of business. Maybe just moved up to supplier status.
Foote here in Los Angeles forges all of Revolutions US made shafts.
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Old 07-18-2018, 09:33 AM   #25
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Any after market rear shafts will be stronger at the flanges.
And even then they all can bend, but revolutions or ten factory are both much stronger than oem.
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Old 07-18-2018, 02:53 PM   #26
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I would have liked to order revolutions, but I just could not pass up the price Northridge4x4 had on the ten factory rear shafts.. $343 assembled and shipped to me, nice sale they had a few days ago.
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Old 08-10-2018, 03:29 PM
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Any after market rear shafts will be stronger at the flanges.
And even then they all can bend, but revolutions or ten factory are both much stronger than oem.

Nail on the head here... you are exactly right
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Old 08-10-2018, 03:33 PM
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I would have liked to order revolutions, but I just could not pass up the price Northridge4x4 had on the ten factory rear shafts.. $343 assembled and shipped to me, nice sale they had a few days ago.
Wow, yeah that is a great price! Especially for us penny pinchers who have a huge mod list that we池e saving up for! Definitely not opposed to those complete axle kits either! Thanks for the input.
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Old 08-10-2018, 03:38 PM
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Foote here in Los Angeles forges all of Revolutions US made shafts.
I did not know that. Good intel my friend! I did find this video of them making the U.S. made axles, it must致e been filmed at Foote! Pretty knarley stuff - and I知 around precision machinery daily!

https://youtu.be/zbZGJSHBo88
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Old 08-10-2018, 04:01 PM
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Exclamation

UPDATE:

So, on my last post, I mentioned that I was in contact directly with Brandon from Revolution Gear & Axle and that he informed me that the pre-assembled RAK51 U.S. Made, 32 Spline, Rubicon, Rear Axle Kit was OUT OF STOCK (huge bummer) and that he would contact me when he heard any further news from their manufacturer (what I now learned is Foote in L.A. - Thanks TRBOKEV!). I致e been patiently [anxiously] waiting for the kits to come back in stock and Brandon actually informed me 2 days ago that the RAK51 kits were in fact IN STOCK and that they would be clear to process shipping out the following day if I placed the order (they offer free shipping online by the way). Big shoutout to Brandon from RG&A for putting up with my questions and updating me as I asked, either by email or on their Facebook page. I ALWAYS got a reply back within short timing and he seemed just as anxious and frustrated as myself to get the parts in. I also mentioned on here that I was in contact with some of their vendors who sell their stuff and I was in touch with Eric at X-Diff Gear & Axle (xdiffautoparts.com) who had also been in contact with Brandon about the kits after my inquiry with them on their website. X-Diff was able to offer a killer deal on the U.S. made axle kit at nearly $60 cheaper than straight from RGA and they also offer free shipping... (its worthy of mentioning that both RGA and X-Diff offered me a 5% military discount if you can send proof or ID). Because I知 saving for future mods I would be crazy not to go with the X-Diff deal over all so I pulled the trigger yesterday after Eric at X-Diff said that they had just received a fresh batch of them as well from RGA痴 manufacturer. I知 not trying to sell anything for these guys but I just wanted to give them both a shoutout because I told them I would for them dealing with this whole ordeal personally and professionally. It really goes to show how important (good) customer service can be, especially in the tight-knit Jeep community where it seems all we do is converse and/or complain about stuff like this. I値l be getting my RGA Axles in sometime next week and I値l be installing them myself shortly after. I will post pics when done because we all love pics, am I right?

Thanks to everyone for the continued info! After all of my research, there is no right or wrong when it comes to better axle shafts. like GetRDun said, almost anything is better or beefier than stock and would be an upgrade nonetheless. However, being a machinist by trade and dealing with all types of metals on a daily basis where I need to know their strengths and weaknesses, I wanted to go with some 4340 shafts over the 4140 due to the added Nickel mixture into the alloy.

Just because this might help someone; AISI-SAE 4100 series is a Chromium-Molybdenum Steel, AISI-SAE 4300 series is a Nickle-Chromium-Molybdenum Steel. 4140 that痴 been Hot Rolled, and normalized has a tensile strength of 148,000 PSI, and a yield of 95,000 PSI. 4340 that痴 been Hot Rolled, and normalized has a tensile strength of 185,000 PSI, and a yield of 125,000. Just my input. There are a lot of factors in heat treating and spline cutting that play into the strength of the axles as well, and I may be over doing it but don稚 we all have some kind of track record of doing that in this community? I take pride in everything that I do. Even when it comes to writing too much information on a post.

-eSCAPEist
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Semper Fi
2012 JKU Rubicon Hard-Top, SpiderwebShade, 17x9 Vision Nemesis Wheels (4.5 BS), 315/70-17 (35) Cooper Discoverer STT PRO Tires, 4.10 Gears, Revolution Gear & Axle U.S. Made Rear 4340 Chrome-Moly Axle Shafts,
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