Eibach vs 4WP for 37's

[Agswin]

I have a 2025 Heritage on order and have been scouring this forum for best options for a lift/level with coil overs under $2k to add 37's. Not interested in a top hat or spacer so it seems like two of the best options are the Eibachs and the 4WP. Here are the questions I can't find answers to.

1. Do I need to make sure I also purchase UCA's in addition to the coils? Which brand?
2. When going on the 4WP website, I can't seem to find the 4WP brand that people seem to like
3. Where to purchase either?
4. Any other options I should consider?

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[Oldhippie]

4wp are discontinued (got bought out). A few places bought up a bunch of them and blowing them out…I think Boss still has some…really like mine (2.5” is better than 2”)…may still find 4wp/procomp UCAs for super cheap too…need to do some looking…

 

[Fordified1]

I have a 2025 Heritage on order and have been scouring this forum for best options for a lift/level with coil overs under $2k to add 37's. Not interested in a top hat or spacer so it seems like two of the best options are the Eibachs and the 4WP. Here are the questions I can't find answers to.

1. Do I need to make sure I also purchase UCA's in addition to the coils? Which brand?
2. When going on the 4WP website, I can't seem to find the 4WP brand that people seem to like
3. Where to purchase either?
4. Any other options I should consider?

UCA’s may not be necessary unless you crank them above 2-2.5” lift which is getting into steep angles on your steering and CV shafts anyway. IMO
I bought my Eibachs from Panda Motorsports which runs great specials on them off and on.

 

[mpeugeot]

From the reviews I read/watched, the Eibach Pro Truck 2.0 suspension lacks the compression and rebound to adequately control the weight of 37's (based on typical weight associated with 37 inch tires).

That said, a lightweight 37 and a lightweight rim might be within the limits of what the Eibach's can manage. You might do better with another option.

 

[Flying Skunks]

Been running the Eibach coilovers and 37's for about a year now . Yes I would suggest UCA's at time of install . Yes the ride Great , no i have never felt any fade or issues running 37's . Am I saying they are the Best , for the price point I would say they are hard to beat .

 

[Draughon]

In addition to the UCAs, I’d look at the steering rack - esp if you’re running Hoss 2.0.

 

[Fordified1]

In addition to the UCAs, I’d look at the steering rack - esp if you’re running Hoss 2.0.

2025 Heritage should come with a 3.0 rack. Someone correct me if I’m wrong.

 

[Gtrekker]

Just chiming in on another option.

Unless you want to lift the Heritage... you can run 37" K02s on factory wheels with no issues since you have the SAS package. No lift or levels needed.

This is true only with the K02s bcuz they are actually 36.5"

This was my day 1 upgrade.

 

[Agswin]

2025 Heritage should come with a 3.0 rack. Someone correct me if I’m wrong.

That is what I though too, can someone confirm?

 

[Agswin]

Been running the Eibach coilovers and 37's for about a year now . Yes I would suggest UCA's at time of install . Yes the ride Great , no i have never felt any fade or issues running 37's . Am I saying they are the Best , for the price point I would say they are hard to beat .

Did you look into the 4WP as well? Seems like the pkg with the UCA's are around $1200

 

[Agswin]

Just chiming in on another option.

Unless you want to lift the Heritage... you can run 37" K02s on factory wheels with no issues since you have the SAS package. No lift or levels needed.

This is true only with the K02s bcuz they are actually 36.5"

This was my day 1 upgrade.

Don't necessarliy need to lift it but I have read that the Eibach/4WP coil overs are a much better ride than stock. Where can I find pictures of your Bronco on those tires?

 

[Gtrekker]

Don't necessarliy need to lift it but I have read that the Eibach/4WP coil overs are a much better ride than stock. Where can I find pictures of your Bronco on those tires?

You can click on my profile n scan through my posts or do a search for 37" K02s should pull up some threads.

Here are some older pics from before I went to AFC fenders.

Fyi, i just installed a long travel kit with Fox 2.5 coilovers and set them to factory ride height. They are adjustable to 3.5" of lift.

In short, the WT is the same height now as the pics below.

 

[Agswin]

Thanks, I am actually considering those tires, I like the white wall lettering, and it is a solid tire as well. Looking at the American Racing retro wheel in 17. Options are a 17x8 with an +0 offset or 17x9 with a -12 offset. Which one will give me more poke? What is factory?

 

[Gtrekker]

Thanks, I am actually considering those tires, I like the white wall lettering, and it is a solid tire as well. Looking at the American Racing retro wheel in 17. Options are a 17x8 with an +0 offset or 17x9 with a 17x9 with a -12 offset. Which one will give me more poke? What is factory?

I've been very happy with the K02s.

Fyi, when shopping for wheels be mindful of the offsets and what tires are available to achieve the poke you want...

If you plan on off roading / rock crawling.

IMO, wheel spacers aren't a good idea on the front. It can increase loads on ur steering rack, tierods n suspension.

 

[JL8jeff]

Thanks, I am actually considering those tires, I like the white wall lettering, and it is a solid tire as well. Looking at the American Racing retro wheel in 17. Options are a 17x8 with an +0 offset or 17x9 with a 17x9 with a -12 offset. Which one will give me more poke? What is factory?

My wheels are 17x9 with -6 offset (so -12 would stick out another 1/4") with the 37x12.5x17 BFG KO2's, they aren't raised white letters though.

The poke was more obvious with the 35x12.5x17 BFG KM3 tires I had previously. The KO2's have more of a rounded shoulder vs the KM3 which is more square. The 35's were E rated and weigh almost 10 lbs more than the 37's which are C rated.

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