Eibach Sportlines

[Eisman]

Quick question.... When installing the Sportline springs, are the included bumpstops fine to use straight out of the box, or should they be cut down a bit. I'll be doing the install soon, and I know about the stock bumpstops needing to be cut down, just not sure if the included stops need any attention, or if they can be just swapped in. Thanks.

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[Dragster]

They're good to go right out of the box.

 

[pockama]

CJPony wrong front bumpstop installation video:
[ame]

 

[Eisman]

Thanks for the info guys.

 

[fstang24]

So the bumpstops that come with eibach need to be trimmed? If yes how much?

 

[Niz55]

So the bumpstops that come with eibach need to be trimmed? If yes how much?

No they do not.

 

[robwlf]

there g2g right out of the box i did cjpp springs and they came with bump stops i used theres right out of the box

 

[kingstang]

CJPony wrong front bumpstop installation video:

You'd think he retract that video or edit with the correct install of the bumpstop.

 

[Terminator2]

Quick question.... When installing the Sportline springs, are the included bumpstops fine to use straight out of the box, or should they be cut down a bit. I'll be doing the install soon, and I know about the stock bumpstops needing to be cut down, just not sure if the included stops need any attention, or if they can be just swapped in. Thanks.

I cut mine down because it was sitting on them at ride height especially in front. I cut about 3/4" off my Eibach front stops and about the same off the rears (maybe 5/8" on the rears). My front end came down 0.25" after cutting the front Eibach stops. You guys saying you are good to go should cut the boots off your struts and shocks and check clearance at ride height to be sure I have a hard time believing I'm the only one who would have this issue. The Eibach stops are a little shorter than stock but only about 1/2" of so I believe and when you drop the car 1.5" but only remove half an inch of Bumpstop you have little to no travel left in this case.

 

[Yeah Nah]

The Eibach stops are a little shorter than stock but only about 1/2" of so I believe and when you drop the car 1.5" but only remove half an inch of Bumpstop you have little to no travel left in this case.

I'm just a newbie in the suspension discussion and I agree with the 'travel' factor your are raising. The issue with lowering I guess is the travel of the struts are being reduced hence they may bottom out out on poor roads and when the vehicle is under heavy loads. I can be corrected by anyone if my theory is incorrect.

Lowering with springs improves the aesthetics (externally) but compromises the integrity of the capacity of the overall suspension system. IMO the shocker/struts will need to be replaced with better performing components.

 

[Terminator2]

I'm just a newbie in the suspension discussion and I agree with the 'travel' factor your are raising. The issue with lowering I guess is the travel of the struts are being reduced hence they may bottom out out on poor roads and when the vehicle is under heavy loads. I can be corrected by anyone if my theory is incorrect.

Lowering with springs improves the aesthetics (externally) but compromises the integrity of the capacity of the overall suspension system. IMO the shocker/struts will need to be replaced with better performing components.

The bumpstops on the S550 are on the strut and shock shafts which is nice vs having them on the body or suspension arms as you know for sure that unless you completely remove them (or cut them down to nothing) the shocks and struts will not bottom out (within reason don't jump the car lol). Stock they are very long like around 4" long. Mine although about 1.25-1.5" shorter than stock are still long enough to stop the struts and shocks from bottoming out.

 

[Niz55]

They are designed to work like a spring with a progressive spring rate. If you cut the top portion of the bump stop, you are essentially changing the effective "spring rate" of the bump stop. So you loose a lot of the comfort because the softer portion of the bump stop is now gone. This becomes an even bigger problem for a lowered car because you are now risking the possibility of the shaft of the shock travelling further than designed and therefore damaging the shock valves or even bending it.

 

[Terminator2]

They are designed to work like a spring with a progressive spring rate. If you cut the top portion of the bump stop, you are essentially changing the effective "spring rate" of the bump stop. So you loose a lot of the comfort because the softer portion of the bump stop is now gone. This becomes an even bigger problem for a lowered car because you are now risking the possibility of the shaft of the shock travelling further than designed and therefore damaging the shock valves or even bending it.

Riding on the bumpstops absolutely kills ride comfort and those shocks can compress until the end of the shaft so bottoming the shocks out with ~2-2.5" long bumpstops is an non issue unless you are jumping your car. If you cut them too short tires could contact the fender liner up top but mine has yet to do so.

Edit: I just went out and measured my rear bumpstops because I can get to them through the spokes of my wheels they are exactly 2" long. Fronts I cannot get to right now but I believe they are just under 2" long as they were shorter than the rears to begin with. Even with 2" long rear bumpstops I have 3/4" uptravel before contacting it so 2 3/4 shock shaft at ride height stock was likely about 1-1.25" and around 4.25" overall.

 

[Doctor Fishtail]

Riding on the bumpstops absolutely kills ride comfort and those shocks can compress until the end of the shaft so bottoming the shocks out with ~2-2.5" long bumpstops is an non issue unless you are jumping your car. If you cut them too short tires could contact the fender liner up top but mine has yet to do so.

Edit: I just went out and measured my rear bumpstops because I can get to them through the spokes of my wheels they are exactly 2" long. Fronts I cannot get to right now but I believe they are just under 2" long as they were shorter than the rears to begin with. Even with 2" long rear bumpstops I have 3/4" uptravel before contacting it so 2 3/4 shock shaft at ride height stock was likely about 1-1.25" and around 4.25" overall.

LOL. I read this this morning and wanted to double check mine. Fronts were good. Rears I cut 3/4" then changed oil in my truck. Gave me something to do this morning. :clap2:

 

[cbrtrx]

Has been posted before. The bumpstop in the front should not be cut with the eibach kit they were designed to be part of the total spring rate at ride height, many cars are set up like this. We are not talking about a lifted jeeps of f250s here. People should really research before they post up incorrect info.

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