Rock Krawler long control arms or Savvy short arms ??? - JeepForum.com
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post #1 of 26 Old 02-14-2018, 01:06 PM Thread Starter
alienator
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Rock Krawler long control arms or Savvy short arms ???

Like in subject just trying to make my mind what brand arms should I get for my TJ and why.
Rock Krawler long control arms or Savvy short arms or maybe Rock Krawler short arms ???
Please advice

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post #2 of 26 Old 02-14-2018, 01:15 PM
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Tell us more about your setup, plans, and goals:

Desired lift height?
axles & gearing?
tire size?
Type of wheeling?

Supercharged 4.0 Rubicon build:


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post #3 of 26 Old 02-14-2018, 01:30 PM Thread Starter
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Rock Krawler 3.5" springs now but maybe ACOS spacers in future 5" -5.5" max lift
dana 30 and 44 4.56 gears with ARB front and rear
33" tyres now but 35" later this year
mild trails mainly with mud because no rocks in my area
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post #4 of 26 Old 02-14-2018, 02:22 PM
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Personally, I would stick to short arms with real Johnny Joints. There are several brands out there.

BTW, ACOS coil spacers are overpriced junk IMO. Adjustability is nothing like how it is sold and just really not necessary. Most people around here pair a 1.25" BL with 3.5-4" springs to create a little more room (that is useable in many ways) and don't stack spacers on top of lift springs. If you really want to do coil spacers then decide on a height and just buy regular spacers.
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post #5 of 26 Old 02-14-2018, 02:26 PM
Jerry Bransford
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Savvy or Currie short arms with Johnny joints. Having run one bolt-on long arms suspension, there's not a bolt-on long arm kit I'd run. There's only one thing my previous long arm suspension did better than my current short arm suspension does... and that was its long arms got hung up on rocks and trail obstacles far more easily.
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post #6 of 26 Old 02-14-2018, 04:17 PM Thread Starter
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1.Would Savvy SA works with 5"lift in future and can I setup castor and pinion correctly( I got ACOS already only need to be instaled)???
2.Rock Krawler SA lowers apparently only works between 2" - 4" lift
3.so RK long arms or Savvy short arms are better on highway or flexing(I dont worry about rocks because there is none where I live)
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post #7 of 26 Old 02-14-2018, 04:18 PM
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I had (what I'm guessing was the 2-3rd gen, I think their website is 5 gen) RKs 5.5 X Factor Long Bent Arm and was not impressed. Most of the powder coat flaked off prematurely. It felt like it had axle rap, which I'm guessing was from the bent arms straightening and poly bushings, and the shocks were the limiting factor on travel.
It did ride good and had good clearance.
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post #8 of 26 Old 02-14-2018, 04:22 PM
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You are going down a road of too much spring lift and a less than ideal means of getting there. If you want to do that good luck, but I don't think you are going to find many fans here of where you are going.
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post #9 of 26 Old 02-14-2018, 04:28 PM Thread Starter
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Quote:
Originally Posted by biffgnar View Post
You are going down a road of too much spring lift and a less than ideal means of getting there. If you want to do that good luck, but I don't think you are going to find many fans here of where you are going.
Well thats why I asking before any purchases and always I can change my plans thats the reason why I'm here...
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post #10 of 26 Old 02-14-2018, 04:33 PM
Jerry Bransford
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I had a 5.5" Rock Krawler lift many years ago and my present 4" Currie plus a 1" body lift is better all the way around. It easily handles 35's which is the biggest the TJ's axles can handle, and it has a lower COG. Most experienced TJ owners will agree a 6" suspension lift is too tall for a TJ.
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post #11 of 26 Old 02-14-2018, 04:40 PM Thread Starter
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Quote:
Originally Posted by Jerry Bransford View Post
I had a 5.5" Rock Krawler lift many years ago and my present 4" Currie plus a 1" body lift is better all the way around. It easily handles 35's which is the biggest the TJ's axles can handle, and it has a lower COG. Most experienced TJ owners will agree a 6" suspension lift is too tall for a TJ.
Ok What you think then about RK 3.5" springs and Savvy ca combo Jerry???
Any good???
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post #12 of 26 Old 02-14-2018, 04:54 PM
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Here's the kit I had. Notice the rear bent upper arms and poly joint bushing on one end of the arms.
https://www.extremeterrain.com/rock-...55xf-la01.html
Here is what I think is their 4th gen. Straight rear uppers with heims and RKs joints and triple rate coil springs.
https://www.morris4x4center.com/rock...j55xfla01.html
And now their 5 gen. with all straight arms.
http://www.rockkrawler.com/ProductDe...tCode=TJ55XFLA
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post #13 of 26 Old 02-14-2018, 08:15 PM
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Originally Posted by alienator View Post
Ok What you think then about RK 3.5" springs and Savvy ca combo Jerry???
Any good???
Why not Currie 4" springs? If you want good suspension travel, Currie is the platform to build your shock travels around. That 1/2" lift between brands is going to be gained or lost depending on the actual weight of your Jeep.

2003 Rubicon

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post #14 of 26 Old 02-14-2018, 08:17 PM
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Aren't RK spring rates on the higher side? He may get a bit more out of them depending on weight.
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post #15 of 26 Old 02-14-2018, 09:30 PM
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Quote:
Originally Posted by alienator View Post
Ok What you think then about RK 3.5" springs and Savvy ca combo Jerry???
Any good???
Do you already own the RK 3.5" springs? Like they've mentioned: Currie 4" is the best

Proven recipe:

*3.5 - 4" Springs
*1.25" BL
*properly measured shocks and bumpstops
*Quality adjustable control arms (currie/Savvy or Metalcloak)
*combined with your D44's with 4.56/ARB, you'll have one very capable and durable setup!

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