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Old 05-18-2015, 09:25 AM
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Parts list for 37's

Looking to build a parts list for upgrading to 37s. I have a 2012 JKUR manual currently on 35's with a 2.5" RE lift, bumpers, winch. Here is a list of what I think I need. Please feel free to add in anything I left out:

1. Truss and Gusset front and rear axles
2. Regear to 5.13
3. Heavy duty ball joints (suggestions?)
4. Axle shafts
5. 3.5" RE springs
6. Shocks
7. Exhaust spacer
8. Drive shafts?

What else am I missing? Also any recommendation for ball joints and axle shafts. Thanks!

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Old 05-18-2015, 10:59 AM   #2
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Hydro assist steering. Your front locker will be absolutely worthless without it on 37s.

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2014 JKR Granite Crystal, 5.13 Auto: RK X Factor 2.5 Inch Lift, Artec Front and Rear Truss, Artec Rear LCA Mounts/Skids, Poison Spyder HD Crossmember, Rock Hard Gas/TC/Evap/Oil Skids, Rough Country Diff Sliders, Nitto Trail Grapplers 37x12.5x17, Pro Comp 97 Series Wheels, Synergy Weld On Rear Trackbar Bracket, PSC Hydroassist, T6 Aluminum Tie Rod, G2 Gold Chromoly Axle Shaft/RCV front axle shaft, Dynatrac Ball Joints, 1310 driveshafts, Artec Rear Upper CA Mounts, Warn VR8000.
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Old 05-18-2015, 01:02 PM   #3
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Larger front brakes...I'm happy with the Tereflex Big Brake Kit.
Rear tire carrier
Ball Joints, Tereflex or Synergy

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2015 Billet Silver JKU "TinCan", 4" Teraflex Elite Long Arm Kit, 37x13.50x17 Toyo O/C MT's, Tereflex Big Brake Kit Front and Rear, Tom Woods Front and rear Drive Shafts, Tereflex HD Tire Carrier, Nemesis fenders, Knuckles Off-Road Front and Rear Bumpers, Rock Slide Engineering Sliders, Method NV Wheels, AFE RB Exhaust, Fox Steering Shock, Rigid Lights, sPod, Warn Zeon 10S...
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Old 05-18-2015, 08:10 PM
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Thanks for the recommendations! I have the warn tire carrier attached to the warn bumper. Forgot to mention that.
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Old 05-18-2015, 10:10 PM   #5
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Do you have a lift already?

If not: adjustable control arms.

Track bar, drag link and tie rod.

Also might look at a tie rod flip.
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Old 05-19-2015, 12:00 AM   #6
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How much are you able/willing to spend? A new front housing like the Tera R44 or ProRock44 would be a good investment.
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Old 05-19-2015, 12:34 AM   #7
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Quote:
Originally Posted by tony81 View Post
Looking to build a parts list for upgrading to 37s. I have a 2012 JKUR manual currently on 35's with a 2.5" RE lift, bumpers, winch. Here is a list of what I think I need. Please feel free to add in anything I left out:

1. Truss and Gusset front and rear axles
2. Regear to 5.13
3. Heavy duty ball joints (suggestions?)
4. Axle shafts
5. 3.5" RE springs
6. Shocks
7. Exhaust spacer
8. Drive shafts?

What else am I missing? Also any recommendation for ball joints and axle shafts. Thanks!
Tony, I think the drive shafts are neccesary.

Have you done a comparison of the cost to truss, gusset, ball joints, regear and lockers versus teraflex, pro rock or G2 aftermarket with everything provided with less labor to install, plus selling your axles? I've been debating it myself, but haven't put it in a spreadsheet yet to see the actual difference.

Anyone feel like setting up a google spreadsheet with the components?
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Old 05-25-2015, 03:54 PM
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I already have a 2.5" Rubicon Express Lift. I just want to get another inch or so to clear the 37s instead of purchasing a whole new lift. Will I need adjustable control arms (I'm thinking so)? I have a synergy tie rod and I don't plan on getting an entirely new axle setup. I was able to get C-gussets done, synergy ball joints and a regear for about $2 grand...and that includes a chip to adjust for gears, tires, speedo etc. It's currently with Northridge 4x4 here in Colorado. I didn't realize the lockers won't work with 37s. So hydro assist steering is my best option? (Honestly I don't know).
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Old 05-25-2015, 07:49 PM   #9
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Your lockers will work with your 37's, and hydro assist is not mandatory, but it does help a ton in the rocks when locked in low.

Here a link so that you know what hydro assist is:

Jeep '2012 & Up JK Extreme Duty Cylinder Assist Kit-SK270 : Cylinder Assist Steering System Kits, Jeep Cylinder Assist Kits | PSC Motorsports - performance steering components, power steering

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2015 Billet Silver JKU "TinCan", 4" Teraflex Elite Long Arm Kit, 37x13.50x17 Toyo O/C MT's, Tereflex Big Brake Kit Front and Rear, Tom Woods Front and rear Drive Shafts, Tereflex HD Tire Carrier, Nemesis fenders, Knuckles Off-Road Front and Rear Bumpers, Rock Slide Engineering Sliders, Method NV Wheels, AFE RB Exhaust, Fox Steering Shock, Rigid Lights, sPod, Warn Zeon 10S...
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Old 05-25-2015, 10:17 PM   #10
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Agreed that hydro assist is not mandatory. Yes I run it and wouldn't live without one but I have had the wheel without it a few times and also know lots of guys that dont run one. You just have to unlock your locker way more often.

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