Kia K4 2025+ Innovative Series Coilover
Kia K4 2025+ Innovative Series Coilover
KI19-IS
🔴 Built To Order (2-4 Weeks)
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This coilover suspension upgrade is designed to achieve a perfect balance of street comfort and increased performance. This suspension system allows you to easily adjust your ride height while improving handling performance of your car.
Our patented scaled system design allows easier and more precise adjustment and ensures equal height on each corner. Each shock is equipped with 24 levels of dampening adjustment to fine-tune the valving efficiency.
The Part : KI19-IS coilover shocks are handcrafted and assembled to your specs at SCALE facilities.
This model front Macpherson configuration comes with adjustable camber plate front top mounts to set your desired camber specs and avoid excessive tire wear. We recommend using the gravitational bearing option to reduce the effort of the camber plate.
This rear divorced spring configuration uses a linear spring. Custom spring rate or length is not a problem.
Shock has no direct impact on wheel alignment, so if you need more adjustment than what your car offers from factory, you can check if a specialized company offers adjustable control arms.
Our mono-tube shock absorber are using high-quality CNC piston valves, synthetic oil and high-pressure nitrogen gas contained within one tube.
As this application uses a specifically shaped spring, only the regular version is available and the custom spring rate or Swift spring upgrade only applies to the linear spring of this application. The swift upgrade price is for 2 springs only.
Technical Specs
| Make | Kia |
|---|---|
| Model | K4 |
| Year | 2025 and 2026 |
| Front Suspension | MacPherson |
| Rear Suspension | Divorced Springs |
| Number of Valves | 24 |
| Aluminum Type | 6061-T6 CNC-Forged |
| Body Diameter | M52X1.5 |
| Internal Design | Monotube |
| Shock Oil Type | Synthetic Shock Oil |
| Pressurized Charge | High Pressure Nitrogen Gas |
| Assembly | No Welding Required, Rebuildable |

$1,395.00
overall I’m very happy with the product and the experience.
The suspension itself feels very high quality. Everything arrived as expected, and I ordered mine with the upgraded Swift springs and stainless hardware. From the packaging to the components, the setup felt well-built and solid.
The installation went pretty well overall. The main downside is that the instructions could use some refinement. They were a bit vague in certain areas, so I had to use my car’s factory service manual to help guide me through removing the OEM suspension and installing the new parts correctly. For someone with less mechanical experience, clearer instructions would definitely help.
The other issue I ran into was that my front coilovers were mislabeled. The left front was labeled right front, and the right front was labeled left front. That caused some confusion and added extra time during the install. Once I figured it out, everything went together, but that was definitely something that could have been avoided.
That said, the customer service was excellent. Before ordering, I had a lot of questions, and even after the coilovers arrived, I had several technical questions during the install process. The sales team and tech support were very responsive, often getting back to me within an hour. That made a big difference and gave me more confidence throughout the process. thanks Josh!!
Overall, I’m impressed with the quality of the suspension and the support from Scale. My only real feedback would be to improve the installation instructions and double-check labeling before shipping. Other than that, it was a very positive experience, and I’m excited to continue dialing in the setup.
Hi George, thank you for sharing your detailed experience! We're thrilled to hear you're happy with the quality of our coilovers and the support from our team. We appreciate your feedback on the instructions and labeling—your insights help us improve. Thanks again for choosing Scale Suspension, and enjoy fine-tuning your setup!
The coilover installation was relatively easy for someone with just a surface level understanding of suspension components.
However, when the fronts got here the stickers letting you know which one was for the left and which one for the right were swapped. I also lost my stickers instantly (which is of my own fault,) but when I emailed asking for possible replacements I got no reply.
All of the negative out of the way, on a good note. I took a gamble on rather these would fit or not, a 1700 dollar gamble. Id say it was worth every cent. Yes, the ride handles a little bumpier than OEM, but thats just coils. These let me stick to the ground at speeds up to 80 on some of the turns I take when before 70 would be the cap.
The instructions could be refined, typos and all. However, they do a very good job explaining what's what.
All in all, I enjoyed my purchase for the most part. I'm sure you will too.
Hi Matthew, thank you for your detailed review! We're glad to hear you're enjoying the performance improvements. Sorry about the sticker mix-up and the lack of response—I will pass this feedback to our team to improve our communication and packaging. Additionally, we apologize for wording in the instructions. We have it converted from French to English as were Canada based. We appreciate your support and hope your Kia continues to handle great on those turns!