Spring question - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 02-15-2016, 05:32 PM
Thread Starter
  #1
Supporting Member

5-Year WF Supporting Member
 
jclem2's Avatar
 
Join Date: Aug 2014
Location: Mt. Pleasant, SC
Posts: 295
Spring question

I have been researching 2.5" lift kits and thought some of you might be able to answer my question.

What are the benefits if any are there to getting a lift with the multi rate springs vs. the regular springs?

__________________
2015 JKU Rubicon HR, Tank, auto, 4.10 , Rock Krawler 2.5, Ripp Supercharger
jclem2 is offline   Quote
Old 02-15-2016, 06:01 PM   #2
Jeeper
 
BreakIt's Avatar
 
Join Date: Feb 2016
Location: Phoenix
Posts: 527
Quote:
Originally Posted by jclem2 View Post
I have been researching 2.5" lift kits and thought some of you might be able to answer my question. What are the benefits if any are there to getting a lift with the multi rate springs vs. the regular springs?
I just got the answer to this question too. Apparently the progressive aka multi rate springs are better for managing extra weight. I.e. Bumpers, winch, etc...
I'm sure there are other benefits too but I'll let the experts take it from here.

BreakIt is offline   Quote
Old 02-15-2016, 09:55 PM   #3
Jeeper
 
mspenc45's Avatar
 
Join Date: Dec 2015
Location: Pearce, AZ
Posts: 62
I just installed the MK 2.5" lift on my 2013 Rubi this weekend. JK Wrangler 3.5" True Dual-Rate Lift Kit I have Cooper STT pro 35" tires. It netted me 3" in the front and about 2 in the rear, so no more front rake. That's about 4.5" overall, including the 35" tires. I went with 2.5 as a compromise in height and low C of G. I am more into overland than crawling.

The dual rate MK springs are nice for the reasons stated by BreakIt, but also because you get full droop and you won't lose your springs! No limiting straps or spring clips necessary. I've not ridden in other JKU's, but I can say for certain the ride is better than it was stock, but I also replaced the stock shocks with the Rancho 9000XL's in the longer length, 331/332 to get the most droop, not sure their affect on the ride. I used 3" of bump stop, but might get away with 2" in the front. Both the MK and the Core 4x4 components were of excellent quality. Rancho's can be had at https://www.shocksurplus.com/ for the best deal I found.









mspenc45 is offline   Quote
Sponsored Links
Advertisement
 
Old 02-15-2016, 10:05 PM   #4
WF Moderator

WF Lifetime Member
WF Supporting Member
::WF Moderator::
 
kjeeper10's Avatar
 
Join Date: Feb 2011
Location: Connecticut
Posts: 53,749
Quote:
Originally Posted by BreakIt View Post
I just got the answer to this question too. Apparently the progressive aka multi rate springs are better for managing extra weight. I.e. Bumpers, winch, etc... I'm sure there are other benefits too but I'll let the experts take it from here.
Yep pretty much it. A progressive coil can be longer, one zone compressed to allow for more droop with unseating. MC's are closer to a single rate, the 2nd rate is only for free length. A triple rate like RK's has a compressed rate (droop), a soft rate (road), and firmer rate to absorb larger hits.
kjeeper10 is offline   Quote
Old 02-15-2016, 10:09 PM   #5
Jeeper
 
monte417's Avatar
 
Join Date: Oct 2013
Location: East Meadow, NY
Posts: 666
Quote:
Originally Posted by mspenc45 View Post
I just installed the MK 2.5" lift on my 2013 Rubi this weekend. JK Wrangler 3.5" True Dual-Rate Lift Kit I have Cooper STT pro 35" tires. It netted me 3" in the front and about 2 in the rear, so no more front rake. That's about 4.5" overall, including the 35" tires. I went with 2.5 as a compromise in height and low C of G. I am more into overland than crawling. The dual rate MK springs are nice for the reasons stated by BreakIt, but also because you get full droop and you won't lose your springs! No limiting straps or spring clips necessary. I've not ridden in other JKU's, but I can say for certain the ride is better than it was stock, but I also replaced the stock shocks with the Rancho 9000XL's in the longer length, 331/332 to get the most droop, not sure their affect on the ride. I used 3" of bump stop, but might get away with 2" in the front. Both the MK and the Core 4x4 components were of excellent quality. Rancho's can be had at https://www.shocksurplus.com/ for the best deal I found.
Did you notice your driveshaft hitting the exhaust crossover with those long front shocks? Mine hits even with an aftermarket Adams shaft at full droop
__________________
2012 Black Sport * Manual * JKS 2.5 Coils * Rancho 9000s * Rubi Axles * 37 Trail Grapplers * Artec Armor * Procomps * JKS Front Tracbar * JKS Disconnects * Superchips * Dynomax * KnN * KCs * Synergy Arms* Synergy Steering * Ten Factory Axle Shafts * EVO C Gussets * Hydro Assist * TrekArmor * Synergy Rear Shock Relocation Brackets
monte417 is offline   Quote
Old 02-15-2016, 11:18 PM   #6
Jeeper
 
mspenc45's Avatar
 
Join Date: Dec 2015
Location: Pearce, AZ
Posts: 62
I used the exhaust spacers and with absolute full droop, no wheel on it, i barely rub the rubber boot. Notice my rear axle vent tube in my rear axle photo. I need to lengthen this line for sure. It is stretched like a guitar string here.
mspenc45 is offline   Quote
Old 02-16-2016, 09:58 AM
Thread Starter
  #7
Supporting Member

5-Year WF Supporting Member
 
jclem2's Avatar
 
Join Date: Aug 2014
Location: Mt. Pleasant, SC
Posts: 295
Quote:
Originally Posted by mspenc45 View Post
I just installed the MK 2.5" lift on my 2013 Rubi this weekend. JK Wrangler 3.5" True Dual-Rate Lift Kit I have Cooper STT pro 35" tires. It netted me 3" in the front and about 2 in the rear, so no more front rake. That's about 4.5" overall, including the 35" tires. I went with 2.5 as a compromise in height and low C of G. I am more into overland than crawling.

The dual rate MK springs are nice for the reasons stated by BreakIt, but also because you get full droop and you won't lose your springs! No limiting straps or spring clips necessary. I've not ridden in other JKU's, but I can say for certain the ride is better than it was stock, but I also replaced the stock shocks with the Rancho 9000XL's in the longer length, 331/332 to get the most droop, not sure their affect on the ride. I used 3" of bump stop, but might get away with 2" in the front. Both the MK and the Core 4x4 components were of excellent quality. Rancho's can be had at https://www.shocksurplus.com/ for the best deal I found.









Nice looking rig! Thanks for the info.
__________________
2015 JKU Rubicon HR, Tank, auto, 4.10 , Rock Krawler 2.5, Ripp Supercharger
jclem2 is offline   Quote
Old 02-16-2016, 10:00 AM   #8
Jeeper
 
monte417's Avatar
 
Join Date: Oct 2013
Location: East Meadow, NY
Posts: 666
Quote:
Originally Posted by mspenc45 View Post
I used the exhaust spacers and with absolute full droop, no wheel on it, i barely rub the rubber boot. Notice my rear axle vent tube in my rear axle photo. I need to lengthen this line for sure. It is stretched like a guitar string here.
Yeah I took my spacers out when I installed my Adams cause they leaked like crazy. It never occurred to me to check to see if the shaft rubbed on normal articulation not when both tires are at full droop. Its not often that the whole axle is at full droop anyway

__________________
2012 Black Sport * Manual * JKS 2.5 Coils * Rancho 9000s * Rubi Axles * 37 Trail Grapplers * Artec Armor * Procomps * JKS Front Tracbar * JKS Disconnects * Superchips * Dynomax * KnN * KCs * Synergy Arms* Synergy Steering * Ten Factory Axle Shafts * EVO C Gussets * Hydro Assist * TrekArmor * Synergy Rear Shock Relocation Brackets
monte417 is offline   Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off






All times are GMT -5. The time now is 11:37 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, Gladiator, Mopar and Grand Cherokee are copyrighted and trademarked to FCA US LLC.
Wranglerforum.com is not in any way associated with FCA US LLC.