Fj80-Swapping out icon stage 3 rear springs for heavies...but which ones? (1 Viewer)

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Mar 29, 2010
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Location
Boulder, CO
There's a plethora of amazing info on 80s suspension...so much so it's hard to sort through. So I'm hoping I could get some advice. I've got a 3yr old Stage 3 Icon suspension that now cannot handle the weight I've recently added to it.

So the rear of my 80 is a bit saggy.

Has anyone matched icon fronts with something heavier in back? Is mixing and matching springs a good idea?

I was looking at the Slinky heavies or possibly going the OME route just for the back. Any recommendations?

Side question... anyone try to run 35s with a 3" icon lift?

I'm weighing my truck later this week, but I'm running:

Sleep rear bumper
Full spare
Hi lift
3 Jerry cans fuel/water
Drawer system
Aux 135amph solar/Battery setup in rear
Hitch mount bike rack
Prinsu rack+4 person RTT
Front Arb bumper + winch
 

LC4LIFE

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Colorado Springs, CO
Post up what you would like to see your hub to flare measurement to be. That will also help the MUD collective help you.
Also, does the weight in the back change a lot, or is it mostly the same all the time?
 

Delta VS

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Boise, ID
Keep in mind, if you’re overdriving the springs, you are likely over driving the shocks too. I have a good rebound recipe for the Icons that match heavier rigs.
 
Joined
Mar 29, 2010
Messages
78
Location
Boulder, CO
Post up what you would like to see your hub to flare measurement to be. That will also help the MUD collective help you.
Also, does the weight in the back change a lot, or is it mostly the same all the time?
Thanks for the awesome feedback. I'd love the truck to sit level to back slightly higher. Currently, tge fronts are sitting at 24" from fender to center. The rear is sitting at 21.5". I'll have the large majority of the weight always on the truck.
 
Joined
Mar 29, 2010
Messages
78
Location
Boulder, CO
Keep in mind, if you’re overdriving the springs, you are likely over driving the shocks too. I have a good rebound recipe for the Icons that match heavier rigs.
Lucky I just put the large majority of the weight on recently. I'd love to hear this awesome recipe!
 
Joined
Mar 29, 2010
Messages
78
Location
Boulder, CO
There are zero issues running different springs. Our 94 shop rig has Icons up front and Slinky in the rear due to extra weight. There are plenty of options that will work well for you.
Oh fantastic! Can I ask what length you're running for front and rear? Are you matching the 3" icon lift with the 75mm heavy slinky's?
 
Joined
Jun 15, 2019
Messages
124
Location
Logan, Utah.
There's a plethora of amazing info on 80s suspension...so much so it's hard to sort through. So I'm hoping I could get some advice. I've got a 3yr old Stage 3 Icon suspension that now cannot handle the weight I've recently added to it.

So the rear of my 80 is a bit saggy.

Has anyone matched icon fronts with something heavier in back? Is mixing and matching springs a good idea?

I was looking at the Slinky heavies or possibly going the OME route just for the back. Any recommendations?

Side question... anyone try to run 35s with a 3" icon lift?

I'm weighing my truck later this week, but I'm running:

Sleep rear bumper
Full spare
Hi lift
3 Jerry cans fuel/water
Drawer system
Aux 135amph solar/Battery setup in rear
Hitch mount bike rack
Prinsu rack+4 person RTT
Front Arb bumper + winch
My rig weighs about 8,200lbs. I have the trekboxx alpha system in the rear, full of tools, Fridge and everything else. I ended up going to the slinky extra heavy duty springs, then I had my shocks re-valved for the heavier weight. It sits perfect now and rides great. fwiw, the slinky heavy duty springs sagged a couple Inches.
 
Joined
Mar 29, 2010
Messages
78
Location
Boulder, CO
Quick update! Thanks for everyone's input here. The Slinky Springs are installed and perfect for the weight distribution I have going on. The slinky heavies raised the rear by 3", and it's now sitting almost perfectly flush. I love the feel of the slinky (rear) vs icon (front)....so I might need to swap the fronts out at some point, but first, 35's are in my near future.

IMG_20210619_143918056 (1).jpg
 

alia176

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Aug 21, 2003
Messages
13,499
Location
Tijeras, NM
Quick update! Thanks for everyone's input here. The Slinky Springs are installed and perfect for the weight distribution I have going on. The slinky heavies raised the rear by 3", and it's now sitting almost perfectly flush. I love the feel of the slinky (rear) vs icon (front)....so I might need to swap the fronts out at some point, but first, 35's are in my near future.

View attachment 2716525

forgot to ask, can you give me the hub center - fender lip measurement please?
 

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