Sold: Ground Control Coilover Kit w/ Modified Dampers for Si

[360glitch]

For sale, Ground Control Coilover Kit with Modified Dampers for the 2017+ Si.

The kit includes the Ground Control Coilover Conversion Kit (MSRP $799.99) and a set of OEM front dampers (MSRP $1,187.00, lol @ OEM Honda prices) that have had the spring perches carefully trimmed off, so that maximum negative camber can be achieved. This setup is easily good for 3 or more degrees of negative camber.

Spring Rates (recommend by Ground Control): 425 lbs/in (front) / 350 lbs/in (rear)

Other perks:

• Because this system is built around the factory dampers, you maintain the electronic firmness control
• No "ADS" error
• Full adjustability of ride height
• Able to be corner balanced
• Offers go-cart like handling, turns your Si into a precision weapon!
• All of the hard work has already been done! (several hours of blood, sweat, and tears!)

The bad:

• Ground Control advertises a maximum drop of 1.75", but if you drop it that low you are going to have issues with the dampers bottoming out, due to reduced travel because of the camber plates
• NVH is often present. It's not unusual to sacrifice noise and comfort in the name of performance, but noise is to be expected with this setup.
• The ride is somewhat stiff for the street, another compromise in the name of performance.

I am selling this kit because at the end of the day this car is my daily driver and I feel I need to maintain a certain level of comfort for my family. Unfortunately I do not make it to the track (or autocross course) often enough to justify a setup like this.

The price for all of the above: $799.99

Please PM if interested, thanks.

 

[incutebus]

Have you considered going a less stiff springrate? I'm still on the edge about that, or you just gonna wait for a new coil?

 

[360glitch]

Have you considered going a less stiff springrate? I'm still on the edge about that, or you just gonna wait for a new coil?

I did consider that but in the end went to a simple Eibach Pro Kit setup with a fresh pair of OEM front dampers. No comparison in performance, but it's fine for a daily.

 

[mkawa]

how many miles on the dampers at those springrates? what tires did you run with these on the car? last time i chatted with donovan, he said that > 400lbs would kill the OE dampers pretty quickly (guesstimated 15-20k).

fortune auto is coming out with something soon that should be slightly above this price range as a 500 series ( > 2x for the more track ready 510), but you have to buy their EDFC system to retain anything like the OEM ADS (or get out of the car to turn little knobs every few minutes..)

 

[bigcdog]

Is this still for sale? And what are the factory Si spring rates? Is there a way to adjust the spring rates on these since mkawa is saying these rates will wear out the dampers? And is there any chance you would sell the coils without the dampers for less?

 

[360glitch]

how many miles on the dampers at those springrates? what tires did you run with these on the car? last time i chatted with donovan, he said that > 400lbs would kill the OE dampers pretty quickly (guesstimated 15-20k).

fortune auto is coming out with something soon that should be slightly above this price range as a 500 series ( > 2x for the more track ready 510), but you have to buy their EDFC system to retain anything like the OEM ADS (or get out of the car to turn little knobs every few minutes..)

I apologize for missing this when you initially responded. I’d say maybe 2000 miles, just an estimate. These are the spring rates that Donavan recommended to me for a mostly street application. Firestone Firehawk tires.

Is this still for sale? And what are the factory Si spring rates? Is there a way to adjust the spring rates on these since mkawa is saying these rates will wear out the dampers? And is there any chance you would sell the coils without the dampers for less?

Still for sale, yes. I do not have the factory rates on hand, they are progressive springs so you would be comparing apples to oranges anyways. GC says they’re 20% more stiff than the factory Si setup. The only way to adjust the spring rates is to swap the springs themselves out. They are interchangeable and available separately. I’d prefer to not part it out. Thanks

 

[360glitch]

Bump!

 

[bigcdog]

I apologize for missing this when you initially responded. I’d say maybe 2000 miles, just an estimate. These are the spring rates that Donavan recommended to me for a mostly street application. Firestone Firehawk tires.


Still for sale, yes. I do not have the factory rates on hand, they are progressive springs so you would be comparing apples to oranges anyways. GC says they’re 20% more stiff than the factory Si setup. The only way to adjust the spring rates is to swap the springs themselves out. They are interchangeable and available separately. I’d prefer to not part it out. Thanks

I’m definitely interested in these but I don’t need the modified dampers since I’m going to be using the camber plates and purchasing camber arms to take some camber back out and put everything closer to zero on the whole setup. I know you don’t want to part it out but I figured I’d let you know anyway in case you change your mind. Thanks!

 

[360glitch]

I’m definitely interested in these but I don’t need the modified dampers since I’m going to be using the camber plates and purchasing camber arms to take some camber back out and put everything closer to zero on the whole setup. I know you don’t want to part it out but I figured I’d let you know anyway in case you change your mind. Thanks!

Feel free to PM me an offer. Thanks

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