Geiser vs Eibach vs Collar

[Leftsidej]

Before and raunchy comments come flying in, I've used the search function several times to find a thread with actual comparable info on the these items and it's kinda all over the place so I thought i'd just settle it with all my fellow FRF user's personal opinions and experiences.

Few different questions I'd like to go over with this thread:

1. I've read Geisers are progressive, like the OEM springs, and Eibach's are linear. How does the ride difference change from going OEM (progressive) to Eibach's linear in terms of a daily driving raptor, or for lack of a better term, pavement princess?

2. A few knowledgable people have told me perch collars were very popular when gen 2's came out because it was the only option at the time. But now that aftermarket springs have come out providing the same "leveled" look that collars provide, it's a better route to go with springs over perch collars. Why is this? I believe I saw one user post something along the lines of if you throw geisers/eibachs on you lose suspension travel, and you don't with collars?

3. If I go the spring route and buy some geisers or eibachs, do they require any other piece of equipment to function properly?

Kind of a cluster. I'd like to either purchase springs or collars to level my truck out a bit but I've read several pros and cons with each. I don't plan to purchase rear leafs for a little while as I'm about to blow quite a bit of mula on some lights but that's another story so the rear is going to stay OEM for a minute.

Thanks all for the input!

 

[roushraptor13]

I was on the fence on which way to go too! I went with the rpg 2.25" collars on my 19. I have only driven about 25 miles since they've been installed and I can't tell any difference in the ride quality so far. I talked to quite a few different people on which was better and it was pretty much split down the middle.

 

[Wfo]

Collars just compress or preload the oem spring to gain height, resulting in a much more stiff ride. You can’t go wrong with either Geiser or Eibach. You WILL need it aligned immediately. I recommend also getting alignment cam bolts for the lower control arms. They are cheap

 

[Leftsidej]

Collars just compress or preload the oem spring to gain height, resulting in a much more stiff ride. You can’t go wrong with either Geiser or Eibach. You WILL need it aligned immediately. I recommend also getting alignment cam bolts for the lower control arms. They are cheap

Do you lose travel if the spring is pre-loaded?

 

[Wfo]

Do you like travel if the spring is pre-loaded?

You only loose droop travel, sag. You will only loose actual travel if the spring binds on itself during full compression. I don’t think this is an issue with either of your 3 options.

 

[xrocket21]

Collars just compress or preload the oem spring to gain height, resulting in a much more stiff ride. You can’t go wrong with either Geiser or Eibach. You WILL need it aligned immediately. I recommend also getting alignment cam bolts for the lower control arms. They are cheap

The spring rate stock is 533 lbs/inch

the spring rate stock with collars is 533 lbs/inch, with a 1.5" difference in static location

If you place 533 lbs on a stock truck and a truck with collars, the front will drop an inch on both

Where exactly is this "much more stiff ride" coming from?

 

[Mark J]

I was just going to ask the same thing xrocket21. It changes the resting height and with 14" of travel how would that "stiffen" the ride? Yes it may shorten max travel by 2.5 inches, because you are starting 2.5" higher but the ride should be the stock ride. Unless you are binding CV's, or Control arms, which in our trucks at 2.5 inches with normal driving I wouldn't think so.

 

[htsai14752]

I'm on the same boat. I've got 50/50 in answers also. Vendors usually push the brand/parts they sell so it's difficult to get a real answer unless someone has tried all 3. If you do eventually add rear springs do you have to consider more lift up front to get it level again? If not I assume you will be back at factory rake?

 

[Wfo]

With my experience racing motocross the majority of my life adding preload requires a change on compression and or rebound dampening. When I did mid perch on my gen1 it stiffened up quite a bit. Oem springs on the gen2 are progressive, the more they are compressed the rate ramps up making them more stiff to resist bottoming.

 

[Leftsidej]

I'm on the same boat. I've got 50/50 in answers also. Vendors usually push the brand/parts they sell so it's difficult to get a real answer unless someone has tried all 3. If you do eventually add rear springs do you have to consider more lift up front to get it level again? If not I assume you will be back at factory rake?

I think Deavers +2 is the same as the OEM rear leafs, and the option 1 Icons are one inch above OEM, I think?