Icon Tremor Leaf Springs

[AlpRunner]

Even more counterintuitive, but lowering/drop shackles are actually longer and not shorter. They raise the rear mouting point of the leaf up, which raises leaf higher or further away from axle, resulting in the chassis lowering. I have to visualize in terms of removing and reinstalling leaf to get it to click in my head. But this explains why there's less interference with exhaust also since it will now be hung higher than stock.

Took me a minute but I got it. Interesting - thanks

 

[GHawk16]

I finally have some real miles and trails on mine and have a few observations. I set mine up in option 3 and I’m just about level with 800-900lbs in the bed. I should note I’m on the new Halos and run Timbren off road bumpstops.

On a recent trip running moderate trails with the occasional challenging line, and towing an off-road trailer, the leaf springs were silent and performed as they should. Not sure how else to relay performance. They’re leaf springs.

I’d recommend a lowering shackle per Icon guidance. My oem shackles make contact with the exhaust. Before setting out for my trip I tested articulation in light of contact, see pics. Articulation didn’t suffer much and contact is light, but eventually may be problematic. Returning home from my trip I threw an emissions code. Probably an unrelated O2 sensor (exhaust and hangers appear fine) but worth noting.
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Do you have a link to the bump stops you are using? Are they the ABSFR1504E

 

[rguest3]

The rear shocks are the same length as the factory Tremor shocks although the front end does get 20% more travel. Here is a photo of the old gear vs New gear. The old leaf pac only has 2 leafs connected while the icon version sports 5. Old setup had bad spring wrap when towing. I had a lot of trailer tug feeling. My wife instantly noticed how solid the towing was with the new system, plus no more body roll and enhanced dampening and tracking. She even fealt the truck was more comfortable off road as well.

Which Tires and Wheels do you have with the Icon Suspension?

Looks great!

 

[Alex Tasch]

Do you have a link to the bump stops you are using? Are they the ABSFR1504E

I have the full ICON STAGE 4 for Tremor and mine is setup without the add a leaf. I literally just use a weight distribution hitch when I'm towing my Airstream to level it otherwise yeah it's quite a hell of a bunch. I really like this option because it performs amazing in the sand at high speeds and it does really good at low speed crawling it's much more planted and my wife can totally tell the difference when we're Towing compared to the original stock leaf springs. I'll never go back. I do like that you pointed out that exhaust contact mine does not do that with the icon drop shackles. Thank you for all the pictures!

 

[Alex Tasch]

I have the full ICON STAGE 4 for Tremor and mine is setup without the add a leaf. I literally just use a weight distribution hitch when I'm towing my Airstream to level it otherwise yeah it's quite a hell of a squat. I really like this option because it performs amazing in the sand at high speeds and it does really good at low speed crawling it's much more planted and my wife can totally tell the difference when we're Towing compared to the original stock leaf springs. I'll never go back. I do like that you pointed out that exhaust contact mine does not do that with the icon drop shackles. Thank you for all the pictures!

 

[Alex Tasch]

Do you have a link to the bump stops you are using? Are they the ABSFR1504E

If I was going to pull an off-road trailer for overlanding I would do the same thing as you because you don't want to have a weight distribution hitch on at that point

 

[GARidgeRunner]

Has anyone noticed a clunk or pop coming from the front eye of their springs? I notice one every time the suspension fully cycles. It can be felt in the floor board. Inspecting the spring at max droop the pack really opens up. Curious if anyone else has experienced this?

 

[GHawk16]

Has anyone noticed a clunk or pop coming from the front eye of their springs? I notice one every time the suspension fully cycles. It can be felt in the floor board. Inspecting the spring at max droop the pack really opens up. Curious if anyone else has experienced this?

Following. I'm holding off on these leaf springs for now. I want new leaf springs and still need to talk to Deaver. My concern with these is squeaking from the bushings, the fact they are just Raptor leafs and not Tremor specific with drop shackles that MUST be used (per Icon tech), and Icon's customer service is just plain bad.

I also noticed in a You Tube video that Tremor Trails said he has stayed with stock and is just running RAS now. For someone that wants to dial in their truck it's interesting he wouldn't try Icon or attept Deaver. Same with Kevin at Halo. I get Halo is their core brand so maybe they won't run Icon because of that, but he could sell a ton if they dialed them in or worked with Deaver to make a leaf pack.

I may just go to Grand Junction to a custom leaf spring place and see what they say. I'm headed to Moab early next month so I'm going to stop in and see what they say and see what the cost is.

 

[Alex Tasch]

Has anyone noticed a clunk or pop coming from the front eye of their springs? I notice one every time the suspension fully cycles. It can be felt in the floor board. Inspecting the spring at max droop the pack really opens up. Curious if anyone else has experienced this?

I have had extensive experience off roading and towing with the ICON VEHICLE DYNAMICS TREMOR STAGE 4 WITH LEAF PACK. They perform so good with the drop shackles that I never went back to thinking about putting in the add a leaf they supply with the kit. I have never experienced the condition that you observed. I only have good things to say like increased travel and better dampening and no more spring wrap when towing. Sorry to hear you are experiencing this. For the gentleman who said they are just RAPTOR leafs that is incorrect. ICON designed these as a huge upgrade over stock GEN 2 leafs and they are an extremely popular upgrade for GEN 1 and 2 owners. Here is a photo at full droop.

 

[GHawk16]

I have had extensive experience off roading and towing with the ICON VEHICLE DYNAMICS TREMOR STAGE 4 WITH LEAF PACK. They perform so good with the drop shackles that I never went back to thinking about putting in the add a leaf they supply with the kit. I have never experienced the condition that you observed. I only have good things to say like increased travel and better dampening and no more spring wrap when towing. Sorry to hear you are experiencing this. For the gentleman who said they are just RAPTOR leafs that is incorrect. ICON designed these as a huge upgrade over stock GEN 2 leafs and they are an extremely popular upgrade for GEN 1 and 2 owners. Here is a photo at full droop.

The drop shackles have nothing to do with the add-a-leaf. The add-a-leaf is there if you want to add weight to the back. I was on the phone with Icon last week for a half hour discussing everything about the kit leaf springs. The add-a-leaf, I'm sure you know, basically allows you to add weight. Depending on weight in the back, depends on if you add-a-leaf and take one out or just add it in and not remove a leaf. But these are designed for other trucks (ie Raptor per the tech and they happen to fit other trucks) therefore the drop shackles MUST be used on a Tremor as I asked about not running them. I also confirmed the heights with as they list different heights if you go to the pages for the Stage kits or if you go to the just the leafs page. So for instance, if you install the Option #2 with the add-a-leaf added, but one spring taken out then you will get half an inch over stock, NOT the 1.5" over stock because you HAVE to use the 1" drop shackles.

I get you are probably an Icon fanboi since you live in SoCal, but I've run Icon before and had numerous issues. That's why I'm hesitant to run them again. They make decent stuff, but also heard WAY more complaints as of late, especially about warranty issues and their customer service. Do they work and are they better than OEM, yeah, since OEM leafs suck. But there have to be other options out there that specifically work on our truck at a much cheaper price. Not gonna lie, with the research I've done...$700 for ONE leaf pack is craze expensive. Then you have to buy the mounting kit and the shackles. If they can give me the ride height I want and from what everyone has said, they feel great, then all the better. But still want to do some research.

As for the poster that has the issues...have they called Icon? What have they said?

 

[GARidgeRunner]

I have had extensive experience off roading and towing with the ICON VEHICLE DYNAMICS TREMOR STAGE 4 WITH LEAF PACK. They perform so good with the drop shackles that I never went back to thinking about putting in the add a leaf they supply with the kit. I have never experienced the condition that you observed. I only have good things to say like increased travel and better dampening and no more spring wrap when towing. Sorry to hear you are experiencing this. For the gentleman who said they are just RAPTOR leafs that is incorrect. ICON designed these as a huge upgrade over stock GEN 2 leafs and they are an extremely popular upgrade for GEN 1 and 2 owners. Here is a photo at full droop.

I’m glad you have had such good luck with their springs. Based on feedback here it seems to be hit or miss. This is my first time running Icon products. The springs are in fact Raptor springs. Their model number is 198510 and labeled as 17-20 RAPTOR MULTI RATE LEAF PACK W/ ADD IN LEAF, directly off Icon’s site.
After multiple emails and calls with their CS, the leaf springs and shocks used in the rear do not add travel, only the front coilovers have this benefit over stock. I originally thought I was sent the wrong shocks due to the measurements and RTIC test results I collected. Going to reach out again now that I’ve taken some video demonstrating the issue.

 

[GARidgeRunner]

The drop shackles have nothing to do with the add-a-leaf. The add-a-leaf is there if you want to add weight to the back. I was on the phone with Icon last week for a half hour discussing everything about the kit leaf springs. The add-a-leaf, I'm sure you know, basically allows you to add weight. Depending on weight in the back, depends on if you add-a-leaf and take one out or just add it in and not remove a leaf. But these are designed for other trucks (ie Raptor per the tech and they happen to fit other trucks) therefore the drop shackles MUST be used on a Tremor as I asked about not running them. I also confirmed the heights with as they list different heights if you go to the pages for the Stage kits or if you go to the just the leafs page. So for instance, if you install the Option #2 with the add-a-leaf added, but one spring taken out then you will get half an inch over stock, NOT the 1.5" over stock because you HAVE to use the 1" drop shackles.

I get you are probably an Icon fanboi since you live in SoCal, but I've run Icon before and had numerous issues. That's why I'm hesitant to run them again. They make decent stuff, but also heard WAY more complaints as of late, especially about warranty issues and their customer service. Do they work and are they better than OEM, yeah, since OEM leafs suck. But there have to be other options out there that specifically work on our truck at a much cheaper price. Not gonna lie, with the research I've done...$700 for ONE leaf pack is craze expensive. Then you have to buy the mounting kit and the shackles. If they can give me the ride height I want and from what everyone has said, they feel great, then all the better. But still want to do some research.

As for the poster that has the issues...have they called Icon? What have they said?

Customer service has been remarkably positive thus far which has been a huge relief based off others feedback. Had to take some video demonstrating the issue and will be sharing it with them.

Prior to purchase I was thinking the S4 kit was truly Tremor specific but as you’ve pointed out with the springs, they are designed around a Raptor which have a considerably lower payload than Tremor. I like the ride height they provide in my configuration, but I could easily see where people would be less than thrilled to not get lift heights they claim.

 

[GHawk16]

Customer service has been remarkably positive thus far which has been a huge relief based off others feedback. Had to take some video demonstrating the issue and will be sharing it with them.

Prior to purchase I was thinking the S4 kit was truly Tremor specific but as you’ve pointed out with the springs, they are designed around a Raptor which have a considerably lower payload than Tremor. I like the ride height they provide in my configuration, but I could easily see where people would be less than thrilled to not get lift heights they claim.

Great to hear they've been working with you. Be interesting to see how they resolve it. These are on the top of my list right now. Only other issue is I'm not a fan of poly bushings due to living in CO. When they freeze they ride rougher and they tend to start to squeak sooner than later. Never had issues in CA when I lived there, but damn when they get hard they get LOUD.

 

[Alex Tasch]

I’m glad you have had such good luck with their springs. Based on feedback here it seems to be hit or miss. This is my first time running Icon products. The springs are in fact Raptor springs. Their model number is 198510 and labeled as 17-20 RAPTOR MULTI RATE LEAF PACK W/ ADD IN LEAF, directly off Icon’s site.
After multiple emails and calls with their CS, the leaf springs and shocks used in the rear do not add travel, only the front coilovers have this benefit over stock. I originally thought I was sent the wrong shocks due to the measurements and RTIC test results I collected. Going to reach out again now that I’ve taken some video demonstrating the issue.

 

[Alex Tasch]

I agree they are a raptor part but it is an upgrade from icon for the Raptor and everyone seems to think they are much better than the stock Raptor leafs

 

[Alex Tasch]

The drop shackles have nothing to do with the add-a-leaf. The add-a-leaf is there if you want to add weight to the back. I was on the phone with Icon last week for a half hour discussing everything about the kit leaf springs. The add-a-leaf, I'm sure you know, basically allows you to add weight. Depending on weight in the back, depends on if you add-a-leaf and take one out or just add it in and not remove a leaf. But these are designed for other trucks (ie Raptor per the tech and they happen to fit other trucks) therefore the drop shackles MUST be used on a Tremor as I asked about not running them. I also confirmed the heights with as they list different heights if you go to the pages for the Stage kits or if you go to the just the leafs page. So for instance, if you install the Option #2 with the add-a-leaf added, but one spring taken out then you will get half an inch over stock, NOT the 1.5" over stock because you HAVE to use the 1" drop shackles.

I get you are probably an Icon fanboi since you live in SoCal, but I've run Icon before and had numerous issues. That's why I'm hesitant to run them again. They make decent stuff, but also heard WAY more complaints as of late, especially about warranty issues and their customer service. Do they work and are they better than OEM, yeah, since OEM leafs suck. But there have to be other options out there that specifically work on our truck at a much cheaper price. Not gonna lie, with the research I've done...$700 for ONE leaf pack is craze expensive. Then you have to buy the mounting kit and the shackles. If they can give me the ride height I want and from what everyone has said, they feel great, then all the better. But still want to do some research.

As for the poster that has the issues...have they called Icon? What have they said?

Thank you yes I understand the drop shackles have nothing to do with the adolese and I understand that the adeleleaf has two different positions for different bed capacity and also different ride heights. I chose not to run the add a leaf at this point because it would stiffen the rear and I really enjoy the handling when I'm doing 85 plus in the sand wash and dunes in Ocotillo Wells. I have videos on Facebook trimmer Nation and trimmer owners groups showing live action video of how my truck handles in the dunes and washes. If I was over landing I would definitely put the add a leaf on but my trailer does really well with the weight distribution hitch and I use that as a base camp and then I use my truck as my toy. I know it's kind of risky going out and driving the way I do and expecting to get the trailer all the way home but so far I've had good luck and I just double check all the leaf bolts and use Loctite red where needed.

 

[GHawk16]

Customer service has been remarkably positive thus far which has been a huge relief based off others feedback. Had to take some video demonstrating the issue and will be sharing it with them.

Prior to purchase I was thinking the S4 kit was truly Tremor specific but as you’ve pointed out with the springs, they are designed around a Raptor which have a considerably lower payload than Tremor. I like the ride height they provide in my configuration, but I could easily see where people would be less than thrilled to not get lift heights they claim.

Did you ever find out what the clunk/pop was on your leafs? I need to go back to your build thread and look at the sag values you noted and compare with what I have weight wise. Not sure if I should start with option 2 or 3. Haven't messed with leaf packs for a while, but can you just add the leaf in without removing the whole leaf pack? Or did you have to take them out to go from option 2 to 3?

 

[GARidgeRunner]

Did you ever find out what the clunk/pop was on your leafs? I need to go back to your build thread and look at the sag values you noted and compare with what I have weight wise. Not sure if I should start with option 2 or 3. Haven't messed with leaf packs for a while, but can you just add the leaf in without removing the whole leaf pack? Or did you have to take them out to go from option 2 to 3?

I was able to identify where the noise was coming from which was half the struggle. It is coming from the top leaf separating from the rest of the leaf pack when the suspension fully cycles. I sent Icon a video along with this picture showing the separation. I must have jinxed myself because it’s been radio silence on their part. Going to pull the pack this weekend and see if I can figure out a way to keep the pack from separating.

I am running option 3 with a RSI SmartCap and Decked system with a few items that live in the Decked (500lbs) and the rear measures 26.25” when taken from center of wheel to bottom of fender well. Ran option 2 prior and when I loaded up for camping I had a reverse rake. I took them off due to how easy it is but it’s definitely doable to add the leaf without disconnecting the eye and a shackle bolts.

 

[traymore]

Is there any better option than Icon? Seems people have all sorts of issue with it. I have a RAS HD at max setting but it’s not enough for my camper + bike rack.

 

[Yeti]

Is there any better option than Icon? Seems people have all sorts of issue with it. I have a RAS HD at max setting but it’s not enough for my camper + bike rack.

Not sure if Dobinsons or Helwig have released anything, yet. I think ironman or one of them have something but no idea how any of their stuff is.
For my rear icon springs, I set a slight axle/ubolt wedge. it effectively changes the rate the top spring (option 3) rotates to a range that isn't as annoying or loud.
positive=it resolved my clunk during high speed (well high speed for my old ass) return at almost ride height
negative= since I printed it, I have to replace it. That said, the wedge lasts longer than the UCA lubrication requirements. ...