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Modified JK Tech Tech related bulletin board forum regarding subjects such as suspension, tires & wheels, steering, bumpers, skid plates, drive train, cages, on-board air and other useful modifications that will help improve the performance and protection of your Jeep JK Wrangler (Rubicon, Sahara, Unlimited and X) on the trail.

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RK 2.5 or 3.5

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Old Apr 22, 2013 | 06:05 AM
  #21  
bo9roadking's Avatar
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3.5" RK Max Travel on 35" BFG tires:
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3.5" RK Long Arm on 37" Toyo tires and flat fenders:
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Old Apr 22, 2013 | 06:19 AM
  #22  
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Originally Posted by mpkelley20
as for ride vs. stock...there is no way any Jeep rides better than stock when lifted. We drive boxes. Lift that box higher and now you have to deal with geometry issues which can only be corrected to a point. Plus, anytime someone sneezes outside, the box acts as a sail and you will feel it. Especially on the highway. I can do 3 lane changes without touching my wheel sometimes when the wind is blowing. Much worse at 3.5" over my old 2.5" and much much worse over when I was stock.

The tide is still nice and handles bumps well but the fact you are now raisied higher just throws off all the engineering that went into designing the JK in the first place. The best comparison really is how this rides vs other lifts....when people say it rides better than stock, it reminds me of when people say "that cover band played the song better than the original"
I disagree with your assessment, but it takes money to make the necessary geometry adjustments. Correcting caster with a new axle that has added caster or turning the inner C's on the factory axle will fix issues with twitchy steering and front driveline vibrations. A draglink flip will fix bumpsteer issues. A new heavy duty swaybar installed in the rear like a Currie AntiRock that is a larger diameter than the factory swaybar will help eliminate any additional lean from a lifted JK. Everything can be fixed with proper adjustments, but most lift kits don't include "everything" that you really need and most people don't want to spend the additional money to fix it. They want bigger tires stuffed under their Jeep and it is a compromise on tire size and lift versus cost.

However, I agree that a higher lift will reduce mileage and handle worse in windy situations because of the increased vehicle height.

Last edited by bo9roadking; Apr 22, 2013 at 06:22 AM.
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Old Apr 22, 2013 | 03:56 PM
  #23  
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You will be happy with just about any RK lift you install. You can upgrade the kits as needed to make it perform even better. The 2.5" Max Travel is one of the most popular kits available. PM us if you would like to discuss more specific details and would like a quote.
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Old Apr 22, 2013 | 05:54 PM
  #24  
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I'm running the 2.5 on my 2 door Sahara. Love it. It's right where I want to be. If I had the added weight of the 4 door, I'd probably suggest going for the 3.5.
Ill probably bump it up one day anyway, but so far it's where I want it.
I don't agree it disagree with the better than stock argument. There's a noticeable difference with bilsteins over the stock shocks. But you do notice some things are different such as steering (more like a truck) , and the resistance of the air coming at you( Boston bridges suck ) but the bumps and roads that are ,for lack of better words tilted, feels alot more comfortable.
As for mileage, I suffered about a 1 mpg loss after installing my lift.
At 35 mph she sits around 1200 Rpms and feels amazing.

Here's a pic compared to a stock front at the dealership today.
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Old Apr 23, 2013 | 01:52 AM
  #25  
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Originally Posted by Jlagross
I'm running the 2.5 on my 2 door Sahara. Love it. It's right where I want to be. If I had the added weight of the 4 door, I'd probably suggest going for the 3.5.
Ill probably bump it up one day anyway, but so far it's where I want it.
I don't agree it disagree with the better than stock argument. There's a noticeable difference with bilsteins over the stock shocks. But you do notice some things are different such as steering (more like a truck) , and the resistance of the air coming at you( Boston bridges suck ) but the bumps and roads that are ,for lack of better words tilted, feels alot more comfortable.
As for mileage, I suffered about a 1 mpg loss after installing my lift.
At 35 mph she sits around 1200 Rpms and feels amazing.

Here's a pic compared to a stock front at the dealership today.
Same

2.5 2 door
3.5 4 door
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Old Apr 28, 2013 | 04:53 PM
  #26  
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Those of you w/ the 3.5 on 4dr do you need a new driveshaft or are you still using stock?

Sent from my bunker deep in enemy territory
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Old Apr 28, 2013 | 05:29 PM
  #27  
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I'm running the 2.5 X factor kit on my 2dr. It yielded nearly 4.5" of lift. I have blistein 5100's and it rides fantastic on road. Far better than stock. Very happy with the performance off road. Works great. No regrets. On a 4dr I would go with the 3.5.
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Old Apr 28, 2013 | 05:52 PM
  #28  
Maertz's Avatar
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Originally Posted by Boyerracing343
I'm running the 2.5 X factor kit on my 2dr. It yielded nearly 4.5" of lift. I have blistein 5100's and it rides fantastic on road. Far better than stock. Very happy with the performance off road. Works great. No regrets. On a 4dr I would go with the 3.5.
damn you netted 4.5" with the 2.5 on a 2 door with front and rear bumpers and a winch?i find that hard to believe...i just ordered the 3.5 coils for my 2-door and should have them soon... im expecting about 4" or less.....do you have a picture of yours?
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Old Apr 29, 2013 | 01:26 AM
  #29  
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^ 2 door guys will see a ton of lift with Rk coils.

I was up over 4" when I first installed them. They settled to around 3.5"
This is with little weight. Those 3.5's are going to be tall as f***
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Old Apr 29, 2013 | 05:32 AM
  #30  
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Originally Posted by kjeeper10
^ 2 door guys will see a ton of lift with Rk coils.

I was up over 4" when I first installed them. They settled to around 3.5"
This is with little weight. Those 3.5's are going to be tall as f***

Are those 33's or 35's? Look like 33's but can't tell for sure....
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