From now until the end of the year we are offering a holiday sale on all Ground Control Coilover Kits.

This kit basically competes with the Eibach Pro-Kits and H&R Sport/Race springs except they allow you to pick the spring rate to suit your individual needs and it lets you adjust your ride height any time you want.

They normally retail for $399, the sale price is $325 plus shipping.

It will fit:

- Stock struts with stock or Koni inserts
- Bilstien Sport or HD Strut assemblies
- GC Custom strut housings

To order simply click on the link below and select your car model: http://www.mpactmotorsports.com/catalog/specials.php

For more info and some reviews check out this thread: http://forums.bimmerforums.com/forum/showthread.php?t=278106

What about E30 M3?

Can we pick it up?

im currently running Koni SA's and H&R sports but I want to be able to drop the front a little lower, would I be able to drop about an inch from where the H&R sports sit? Can I just purchase a front spring setup (w/o the rears)?

phill

Yes the E30M3 is included in the sale. We have moved to UT but I can ship them to Edge Motorworks in Dublin if you would like to pick them up. You will just have to prepay with me.

You can purchase just the front kit ($199) but I would not recommend it. It would offer unpredictable handling with your H&R Sport rear springs since they are progressive.

Do you guys offer the bilstien sport struts to go with the GC coilovers?

We do not currently sell Bilsteins. Only Koni, H&R, Advanced Design, and Moton.

Does this kit include the 98 E36 318i model?

Also, would I need anything else to run these coilovers(struts and springs)?

Opps I just saw the thread to it for more info..

How about a deal on GC Race Camber plates?

Due to numerous questions I wanted to clarify that this sale is the for the Street coilover kit (spring rates from 300-525#) any other custom rates requiring ERS spec springs are still $399.

what about E30(non M3)?

just to make sure, this is the kit http://www.ground-control-store.com/products/description.php/II=563/CA=9 ?

What is the max. drop on these?

For the E30 M3 kit, do we get to choose our own front and rear spring rates?

Ok, I currently have a H&R cup kit on my car (sport springs and shocks/struts) would there be anyway that these could work with those shocks/struts? (I just thought i would ask since i wasn't positive after reading your posts)

Thanks
Tom

From now until the end of the year we are offering a holiday sale on all Ground Control Coilover Kits.


Will discount apply to the GC Track Plus kit ?


To order simply click on the link below and select your car model: http://www.mpactmotorsports.com/catalog/specials.php


I'm not seeing the street kit on the specials page.

Thanks.

JPBmw, we do offer the E30 kits. Just email me if you want to order.

Digitalwave, the sale only includes the GC-spec street springs 375, 430, 475, 525. Other rates are still at the normal price.

318daily, the Track Plus kit is already at a significant discount so it is not going to be part of a sale. I pulled the specials to correct the spring rate options. You can email or call me if you want to order until they are back up.

jonnyg, that is the same kit except that the sale price requires selection of a GC-spec street spring rate.

Ok, I currently have a H&R cup kit on my car (sport springs and shocks/struts) would there be anyway that these could work with those shocks/struts? (I just thought i would ask since i wasn't positive after reading your posts)

Thanks
Tom

:help

thanks

:help

thanks

Cup Kit springs and shocks are extremely soft. I wouldn't run them with GC's which feature linear spring rates.

Cup Kit springs and shocks are extremely soft. I wouldn't run them with GC's which feature linear spring rates.

Really? i would have thought the shocks/struts would be fine since they are just H&R sports, if that is that case what would happen if i did run them, blow out the shock/strut?. what do you think M rob?

Tom

Tom, I think as long as we stay under 500# for spring rate, we should be fine using the Cup kit springs. I actual like the H&R-spec valving on their Bilsteins.

Fitment won't be a problem since H&R uses direct replacement struts. Just be sure to specify that you have Bilsteins when ordering.

Tom, I think as long as we stay under 500# for spring rate, we should be fine using the Cup kit springs. I actual like the H&R-spec valving on their Bilsteins.

Fitment won't be a problem since H&R uses direct replacement struts. Just be sure to specify that you have Bilsteins when ordering.

ok just to make sure i understand you correctly. so you are saying to make sure we stay under 500# for the spring rate on the new springs in the coilovers right? I always thought that H&R had their own shocks/struts, or are they just the same thing as the bilsteins?

Thanks
Tom

Correct.

H&R doesn't make their own shocks. They just revalve Bilsteins to their custom specs.

How are the front collars attached to the strut housing?

Really? i would have thought the shocks/struts would be fine since they are just H&R sports, if that is that case what would happen if i did run them, blow out the shock/strut?. what do you think M rob?

Tom

Where do H&R Sports come into this picture? The rates for Cup Kit springs are even less than H&R Sport springs, I can't imagine the Cup Kit shocks working good with a Ground Control setup. Even stock valved Bilstein Sports lack rebound for 300+lb spring rates.

Where do H&R Sports come into this picture? The rates for Cup Kit springs are even less than H&R Sport springs, I can't imagine the Cup Kit shocks working good with a Ground Control setup. Even stock valved Bilstein Sports lack rebound for 300+lb spring rates.

Ya know what you are right, i thought that the cup kit and sports were the same thing hence why i said both in my prior posts. but I just called H&R and turns out you are correct.

Think it will still work Rob?

Thanks
Tom

M Pact - PMed you.

hey rob..ur in danville correct??? can i meet u some where to check them out???

what spring rate would be most comparable to my eibach pro-kits? i really like the current ride of my springs, but i'd the adjustment capability of the coilovers.

thanks!

How do we pay?

Anyword on if you are offering camber plates?

M Rob,

What is the advantage of the shortened shock bodies supplied with the track/school kit? How/why (if at all) is the track/school kit better than this kit? I assume it allows for greater lowering without loss of travel?

Thanks

Uhm, i'm lost? soooo are these coil overs? liek the ones that retail for 2000$? i dont see how it can adjust ride height. can some 1 explain this to me? or any pics? thanks!!

Uhm, i'm lost? soooo are these coil overs? liek the ones that retail for 2000$? i dont see how it can adjust ride height. can some 1 explain this to me? or any pics? thanks!!

Go to www.ground-control.com

They are threaded sleeves with race-spec springs.

i need some advice

my car has about 125k miles on the stock suspension
it is a daily driver so no track or anything like that
i will have to raise the car for the winters in MI
i want to lower it just for looks

should i get new shocks? what would be a comfortable setup?

thanks

Rob I still haven't gotten my money :(

Stock struts with 100K+ miles= Bad idea with Coilover springs. :nono

I think its safe to say that you could pick up these coilover spring if you currently are running aftermarket struts like Koni SAs, etc. Stock struts would not be considered due to their quality and rebound, etc. I will be ordering these by mid Dec at the latest. There is plenty of info on this in this thread and others. :)

I have BL/HR sports on my 98M3, i m wondering what spring rates would provide the most comfortable ride on the street? Do they run the same front and back or diff??

sorry for all the question

ac

Ya know what you are right, i thought that the cup kit and sports were the same thing hence why i said both in my prior posts. but I just called H&R and turns out you are correct.

Think it will still work Rob?

Thanks
Tom

:help

FYI, I don't think they would even be close to working. They are way too soft.

Sorry guys, been traveling the past few days and haven't gotten to check this thread.

Anyways, here are some answers:

GotDinan: we are now fully relocated to UT, but I can have them shipped to Edge Motorworks in Dublin if you want to pick them up from there.

Shu: while there is not a direct correlation with your Pro-Kit springs because of the linear vs progressive and large barrel vs 2.5" spring, I would recommend a 375/450 as a good street starting point.

Dakar95M3e36: I accept visa/mc, paypal, or money order. You can order by email or phone or online (soon).

Maddog20/20: The advantage of the shortened housing is additional travel as you said. It becomes really important if you lower the car over 1.5" up front.

bmw buddy: As mentioned in this thread at 100k+ your stock struts are trashed. I would not upgrade springs without replacing the shocks at this point.

RRdawho: Please email me ASAP. It must have fallen off my radar.

actp16: I would recommend a 375/450 as a good street starting point.

943184dr: Are we talking about your E30 or E36?

Sorry guys, been traveling the past few days and haven't gotten to check this thread.

Anyways, here are some answers:

GotDinan: we are now fully relocated to UT, but I can have them shipped to Edge Motorworks in Dublin if you want to pick them up from there.

Shu: while there is not a direct correlation with your Pro-Kit springs because of the linear vs progressive and large barrel vs 2.5" spring, I would recommend a 375/450 as a good street starting point.

Dakar95M3e36: I accept visa/mc, paypal, or money order. You can order by email or phone or online (soon).

Maddog20/20: The advantage of the shortened housing is additional travel as you said. It becomes really important if you lower the car over 1.5" up front.

bmw buddy: As mentioned in this thread at 100k+ your stock struts are trashed. I would not upgrade springs without replacing the shocks at this point.

RRdawho: Please email me ASAP. It must have fallen off my radar.

actp16: I would recommend a 375/450 as a good street starting point.

943184dr: Are we talking about your E30 or E36?

this would be for my e36


thanks
Tom

I don't know why you are ignoring me on this issue. I have install 2 separate Cup Kits on E36's. The spring rates on the Cup Kit springs are less than H&R Sport springs, and H&R Sports are soft springs. The shocks in the Cup Kit have been valved to match the spring rates of the Cup Kit springs, therefore the shocks are soft. They will not be a good match for a Ground Control coil over kit.

I don't know why you are ignoring me on this issue. I have install 2 separate Cup Kits on E36's. The spring rates on the Cup Kit springs are less than H&R Sport springs, and H&R Sports are soft springs. The shocks in the Cup Kit have been valved to match the spring rates of the Cup Kit springs, therefore the shocks are soft. They will not be a good match for a Ground Control coil over kit.

I have never ignored you on this issue but since M rob sells this product I at the very least was curious on his opinion. I understand that you dont think it will work but since rob sells the product i thought i would see if maybe he thought otherwise. I even called up H&R (local to me) and asked them about it and they think anything above a 315# spring is high (this is what is on their coilovers).

Thank you for the input.
Tom

Tom, we have sold kits to work with even stock struts so I know we can dial some in for your Cup kit shocks. While Digitalwave is correct that the standard track/school range (450-600# springs) would be too aggressive, we can go as soft as you would like.

Rob,would you post one of these kit's to the UK ?

Andy

by any chance can u just sell the kit without springs? (ie. adjusters only and top hat?)
I already have the springs off my old car.
thanks
franklin

M Rob,

I PMed you and Emailed you, I'm interested in buying a set, so please give me a shout back.

I was under the impression that ground control was against /would not do group buys....???
This is the reason I bought my coilovers from them and my rsm's from mpact

^^^Bump^^^

Where's Rob ?

Rob-

I am currently running Koni SAs with Eibach Pro-Kit springs. I was considering switching to H&R race because I am looking for more of a drop, especially in the front. How would this GC Coilover street kit compare to a set of H&R race springs as far as spring rate. Would I be able to go that low, and are the GC Coilover springs completely compatible with my Koni SAs. What is the range on the height adjustablitiy? Thanks.

Tyler

Is this complete suspension because I dont have springs or shocks, forgive me for the asinine question.

^^^Bump^^^

Where's Rob ?

good question, Rob i sent you a pm a while ago but haven't heard from ya?

Tom

Will this fit if i use H&R sport springs? Will it also fit on my 98 318i?

What do I need to upgrade a stock 318ti *hatchback

I'm trying to determine which adjustables I should purchase. Does anyone know if the GC's will ride much different than the H&R's?

Where the hell are my parts and where the frig is the so called "Supporting Vendor". I thought I was going to get good customer service out of this guy!

Don't start a god dammened GB if you can't finish it.

Sorry for the delay guys, we were out of the office last week for Thanksgiving.

Thanks to Jon for letting me know about all the posts. For some reason I am not getting email notices for it.

Anyway, the sale is still going. I'll try to answer all questions in a few posts.

Andy, We can ship to the UK.

UDM, we can break up the kit into pieces for you if you want.

st8gone, this isn't a GB, its a sale. And as you know MPACT is a GC Master Distributor and we have been allowed to do this one time deal.

I'll be checking and answering all PMs tonight and tomorrow.

zrxoddie, what is your order number. Posting is rarely the best way to contact us. And as I mentioned before this is a sale, not a GB.

If you sent us an email today or yesterday you should be receiving a response very soon. We are still playing catch up.

What do I need to upgrade a stock 318ti *hatchback
?

Andy, We can ship to the UK.




Have you got a rough idea how much the shipping to the UK will cost ?

I might need some help chosing which spring rates i need,would you be able to help ?

Andy

Rob-

I am currently running Koni SAs with Eibach Pro-Kit springs. I was considering switching to H&R race because I am looking for more of a drop, especially in the front. How would this GC Coilover street kit compare to a set of H&R race springs as far as spring rate. Would I be able to go that low, and are the GC Coilover springs completely compatible with my Koni SAs. What is the range on the height adjustablitiy? Thanks.

Tyler

same question here!

-Leonard

im gonna buy this srping kit to go with my Koni SA's and replace my h+r race, mainly for the advantage of corner weighting. just curious about the cost of the gc front strut housings to make a complete kit? also, the weight of these versus my housings?? weight would be my main reason for upgrading these...of course there's the exra travel too...

thanks
kevin

forget it

no replies,
no service,
no buy?


i guess they are backed up. I e-mailed them last week.

I guess i'll give them couple more days.

no replies,
no service,
no buy?


i guess they are backed up. I e-mailed them last week.

I guess i'll give them couple more days.

I sent rob a pm quite a while ago, i'm guessing about month now and still have yet to get a response.

Tom

Ok, I just cleared out our PM box and double checked our email for sale questions. Everyone who sent me a question should have an answer now. If not email me direct at rob@mpactmotorsports.com

M Rob, I still haven't received a reply from you, so I emailed you again. Thanks.

Rob, I also sent you an e-mail

-Leonard

Rob,

I sent an e-mail too.

Is this complete suspension because I dont have springs or shocks, forgive me for the asinine question.

these don't come with shocks.



and as far as spring rates go, the H&R race is 345lb up front and 515lb in the rear. I believe they are progressive, while GC uses linear's, not 100% sure.

Quick question for you MPACT, is the "cushion ride kit" the softest spring that match my BL sport on sale too? If not then i probably will order it later. Thank you :)

Thanks for getting to me Rob, I appreciate it! Can't wait to get my Coilovers, should be around Christmas.

Thanks again!

I run this kit, purchased from Rob. He's good people. You'll like this a lot. I paid $400 for it though :/

I run this kit, purchased from Rob. He's good people. You'll like this a lot. I paid $400 for it though :/

The sale was almost a full 2 years ago!

The sale was almost a full 2 years ago!

Can I still get in on this :eek: :D

Ditto... I want GB price!!