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HKS Hipermax IV-GT Coilover Kit - Subaru WRX/STI 2015+

MODEL # HKS2 80230-AF008
Manufacturer Part # 80230-AF008


MSRP: $1,590.00

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RallySport Direct 2015 Subaru WRX Project Car Suspension Kit ( Part Number:RSD 15WRXPCS)
RallySport Direct 2015 Subaru WRX Project Car Suspension Kit
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The HKS Hypermax IV GT Coilovers have been crafted to provide superior handling, style, and looks to your vehicle. 

Here are some additional specs to the Hypermax IV-GT Coilovers:
•    Mono tube design which allows for better control which results in better ride quality when lowered.
•    Dust boost installed on the shafts to protect from harmful road impediments.
•    PNE Coating provided on the height adjustment components to prevent rust and corrosion buildup when making height alterations.
•    Newly designed needle to improve dampening throughout the entire range.
•    Aluminum components designed to reduce unsprung weight.
•    30 Step damping force allow fine and precise tuning for both street and track.

In conclusion this is a direct OEM replacement  that comes supplied with top hats, and are ready to install. Additionally these coilovers will come provided with adjustment tools which will make height adjustment convenient for the user. You can adjust the height from the shock body rather than messing with the pre-load. 

Once installed you can fine tune these coilovers to make generous improvements in handling that is suitable for both the track, and on the street.

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Brand: HKS
Adjustable: Yes
Camber Adjustable: No
Caster Adjustable: No
Dampening Adjust Type: 30 Way
Damper Type: Inverted
Drop Height Front: 0-2.1in
Drop Height Front Metric: 0-55mm
Drop Height Rear: 0-2.9in
Drop Height Rear Metric: 0-74mm
Height Adjustable: Yes
Independent Height Adjustable: Yes
Spring Rate Front: 448lbs/in
Spring Rate Front Metric: 8Kg/mm
Spring Rate Rear: 336lbs/in
Spring Rate Rear Metric: 6Kg/mm
Top Hats Included: Yes

Mfgr. Warranty: 1 Year Limited
Condition: New Product
Return Policy:

RallySport Guarantee - 30 Days

Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.



Verified Purchase

Great Coilovers!
562_WRX 4 months ago
Install was pretty simple. Just a few bolts to remove and install right back on. Build quality is great and these ride a bit more soft than stock. The pre-set height was low enough for me since my lip scrapes on some driveways unless I take them at an angle. An alignment was required after the install as my wheels pulled to the right. Gained a moderate difference in handling especially in corners. I'm sure once paired with some sway bars and braces, there will be a big difference.

Verified Purchase

HKS got the drop perfect!!!
Steve 2 years ago
The GT coilovers are super easy to install on the 2015 WRX. The quality is very good as well. I came from a 2012 Civic SI which I was running buddy club coils on. The spring rate on those was 8k/6k, so I was interested to see what that same spring rate would feel like on a heavier car. I think for the 2015 WRX a little higher spring rate is needed in my mind (maybe a 9k/7k - (with that in mind you might want to go with the SP if you want it to handle like it is on rails ). The ride on these coils is very good though (super quiet) and the drop is perfect. It was nice to be able to simply throw these into the car and have the stance be very good out of the box. I am including a pic of my car with about 600 miles on the suspension. I swapped wheels and tires when I did the suspension install. I am running 255/40 18 Hankook V12's. wheels are 18x9.5 +45. I set the car up with -1.6 rear and -1.4 front. no pull or roll was done to the car and no rubbing at all. I could probably run less camber both front and back and be fine.


Amazing Coils
KMEninety335 2 years ago
These coilovers are well worth the price. The handling is amazing. They were really easy to install especially on the 15+ WRX. Dialing in the dampening is easy as well and I will soon be lowering it a bit more. I used to have a set of Bilstein PSS9s and these are just as good!


These are amazing!!
Rick C. 2 years ago
If you are looking for the perfect coilover for street and light duty track use, these are absolutely perfect. With the Rubber isolated uppermount they keep out most of the NHV, yet they give razor sharp handing and all the adjustability you could want. Plus they are HKS, and that's always a good thing.


HKS Hipermax IV-GT Coilover Kit
Michael N. 2 years ago


  • Q: 2018?  MikeW177 2 months ago


    Will these fit the 2018 STI?

    • A: These will fit the 2018 STI.

      Jared A. 2 months ago
  • Q: 2018 STI Install  BoostedJG 5 months ago


    So i watched the video and it stated that HKS wants you to take out of box and install with no adjustments. How much will it lower the car if you do that?

    • A: HKS presets their coilovers to what they think is the "best" setting for the vehicle's performance. Out of the box, they should be roughly 1" lower than stock ride height.

      Brady R 3 months ago
  • Q: Control Arms  pausethelight 2 years ago


    Okay so follow-up Q: after an alignment would you say it is necessary to have control arms with these coil overs? I'm concerned with uneven tread wear. Or will the camber difference from stock not be a huge factor.

    • A: The camber would depend on the height of the coilover after it is installed. Control arms or camber bolts are going to allow you to have some adjustment and could possibly help you bring the camber back to OEM spec.

      Chris W. 2 years ago
  • Q: Camber  pausethelight 2 years ago


    At what height will these coil overs start to change the factory camber settings? Will I have to buy different control arms to adjust the camber back to factory?

    • A: Most coilovers will have a small change in camber as soon as they are installed and it is recommended to have an alignment done immediately after installation. You can purchase control arms to bring the car back to OEM specs.

      Chris W. 2 years ago
  • Q: Box dimensions, weight; Availability  FBurgos 2 years ago


    Can you provide the box dimensions and the weight? Are they contained in 4 separate boxes or in 1 box? And when will they be available again? Thank you!

    • A: The dimension will be: 22x16x11 and 56 LBS. They are in 2 separate boxes that are strapped together and we list Estimated ETA's on the page, just under the Price Section. Please note the dates provided are only estimated ETA's and not guaranteed dates.

      Brady R 2 years ago