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Old 12-21-2015, 12:09 AM
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Road Magnet/Bilstein Set-Up

Question here:

I own a 2015 JGC Altitude. About to get a pair of used Road Magnets that were on a 2012 GC for only a couple months. They are the Aggressive Drop (1.8" F and 2" Rear)

I've been reading that i should most definitely change out my stock shocks for bilsteins. Any advice on this?

And can anyone post a link for the proper set of bilsteins i should get with the springs?

Pics are welcomed as well to see what the finish would look like!

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  #2  
Old 12-21-2015, 07:43 AM
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Re: Road Magnet/Bilstein Set-Up

Bilstein 4600 shocks. If you have a tow package, you will also need to remove the load-leveling shocks out back and get new non load-leveling upper shock mounts as well.

I bought my Bilsteins here: Bilstein Monotube Shock Absorbers and Struts | 2015 Jeep Grand Cherokee | Bilstein | AJUSA.com They had the best price I could find with free shipping.

But it appears that they are currently on backorder
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Old 12-21-2015, 01:16 PM
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Re: Road Magnet/Bilstein Set-Up

Please read the recent post on Eibach lowering before and after. There is only one bilstein model, the 4600s for the WK2 platform, widely used by many.

There may be other issues re: using the aggressive RM drops and getting the alignment/camber back into OEM spec. Please read those related posts as well.

I'm not an engineer or techie, but I've made many suspension mods discussed on these boards in isolation and they impact ride differntly. Being as you are from NY, metro area? Please feel free to PM my experience, all on-road.

Good luck with the mods.
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Old 12-21-2015, 01:25 PM
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Re: Road Magnet/Bilstein Set-Up

eibachs similar height to RM mids (1/1.8 f/r). hope the attach pic goes through.
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Old 12-21-2015, 03:40 PM
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Re: Road Magnet/Bilstein Set-Up

Quote:
Originally Posted by Nelson Ng View Post
eibachs similar height to RM mids (1/1.8 f/r). hope the attach pic goes through.
Similar drop, but from what I've read, not as low as what the RMs give. Also from reading, the Eibachs tend to run more like a performance spring, stiffer for cornering whereas the RM Mids ride softer, more like OEM ride quality. All I can go by is posts on this forum from members that have installed Eibachs & Road Magnets, both mid & aggressive drops, as I've been researching quite a bit lately. I've also read more recently that Eibach has a new lowering spring out but don'r know much more than that.

As Nelson said, with the aggressive drop expect to encounter additional costs to get camber to dial back in. And I would suspect, at that height you would experience some unpleasant ride quality. Another thing to consider it the wheel/tire combo you are running. May get some rubbing.

Hope all this helps
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Old 12-21-2015, 04:14 PM
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Re: Road Magnet/Bilstein Set-Up

Agreed Attitude.

The Eibachs pro kit lowering height is comparable to the RM Mid-drop version, not the aggressive lowering version. I think your summary comment on RM being soft and more OE in "ride quality" get to the heart of the problem everyone has faced.

I believe the RM's were designed for the SRT and/or V8 configs (check their website). When I spoke to Bilstein, the Eibach pro kit spec'd out at 800+lbs/sq in at rest weight in the rear, almost 40% higher than the OEM springs. The fronts are also firmer, but to a lesser degree. There's a spec sheet on the forum here somewhere.

The RM's, designed for the SRT/V8 are even higher. Its no surprise, combined with the Bilstein 4600 aftermarket struts designed around a "stock" mass market, there is commentary about RMs being "softer OE ride." It has to be, the shocks (as good an aftermarket replacement as they are) are over-powered even when new, for lack better description.

As I've mentioned to you, I've revalved the rears, and the ride now is absolutely 100% improved. There's a guy out of Detroit that specializes in the Bilsteins. End result is the tight euro feeling ride as I had hoped. As I mentioned, each of my mods were done in isolation, so the nuances at each stage are noticeable. And that's the purpose of a forum like this, to be able to share experiences, and help the next guy make as informed decisions as possible.

Happy mod-ing
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Old 12-21-2015, 05:14 PM
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Re: Road Magnet/Bilstein Set-Up

Quote:
Originally Posted by Nelson Ng View Post
Agreed Attitude.

The Eibachs pro kit lowering height is comparable to the RM Mid-drop version, not the aggressive lowering version. I think your summary comment on RM being soft and more OE in "ride quality" get to the heart of the problem everyone has faced.

I believe the RM's were designed for the SRT and/or V8 configs (check their website). When I spoke to Bilstein, the Eibach pro kit spec'd out at 800+lbs/sq in at rest weight in the rear, almost 40% higher than the OEM springs. The fronts are also firmer, but to a lesser degree. There's a spec sheet on the forum here somewhere.

The RM's, designed for the SRT/V8 are even higher. Its no surprise, combined with the Bilstein 4600 aftermarket struts designed around a "stock" mass market, there is commentary about RMs being "softer OE ride." It has to be, the shocks (as good an aftermarket replacement as they are) are over-powered even when new, for lack better description.

As I've mentioned to you, I've revalved the rears, and the ride now is absolutely 100% improved. There's a guy out of Detroit that specializes in the Bilsteins. End result is the tight euro feeling ride as I had hoped. As I mentioned, each of my mods were done in isolation, so the nuances at each stage are noticeable. And that's the purpose of a forum like this, to be able to share experiences, and help the next guy make as informed decisions as possible.

Happy mod-ing
Glad you were able to get things dialed in. I know you were having that done. If you don't mind, what would something like that cost?

Thanks
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Old 12-21-2015, 05:29 PM
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Re: Road Magnet/Bilstein Set-Up

Delta Vee Motorsports
deltavee.net

Its $300 plus the cost of the rears for the rears only. The 4600 fronts are not of the "rebuildable" variety, so those remain stock. Only the backs are rebuildable, and that's all that is necessary to do. You can order directly from Rob, the owner, but I believe he said 4600s are on backorder til late Jan or you can buy online and send to him and he send them back to you. I know its an additional expense, but better to do beforehand, than duplicate labor. I can't stress the benefit/importance of this step in the process enough...

Hope this helps.
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Old 12-21-2015, 06:15 PM
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Re: Road Magnet/Bilstein Set-Up

Quote:
Originally Posted by Nelson Ng View Post
Please read the recent post on Eibach lowering before and after. There is only one bilstein model, the 4600s for the WK2 platform, widely used by many.

There may be other issues re: using the aggressive RM drops and getting the alignment/camber back into OEM spec. Please read those related posts as well.

I'm not an engineer or techie, but I've made many suspension mods discussed on these boards in isolation and they impact ride differntly. Being as you are from NY, metro area? Please feel free to PM my experience, all on-road.

Good luck with the mods.

I live on Long Island, majority is suburban-area travel. I wanted to go for a tighter fitment look. 22 inch rims with an aggressive RM drop.

You said i might incur other costs with the alignment issues. Meaning i would need control arms or stuff like that? And im sure there would be some rubbing with that size tire and drop, as long as its not too much. Ill probably make another thread inquiring about this.
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Old 12-21-2015, 06:27 PM
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Re: Road Magnet/Bilstein Set-Up

Yes that's what I suggested as additional costs. There are better informed elsewhere on the forum re: 22" and the aggressively lowered look. You may want to try other threads, given the fitment look you are trying to achieve.

However, I believe the potential for rubbing and softening ride quality issue comments would still be valid.

Most of LI smooth, NYC not so smooth. But all-in-all we travel the same metro roads where ride quality and rubbing should be considered.

Happy tuning.
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