SKU: 18124643015

ST X-Height Adjustable Coilovers 11-15 Kia Optima TF - Excl. Hybrid

Sale price$987.75 Regular price$1097.50
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Ships within 48 hours · Estimated delivery Aug 23 - Aug 28

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Description

ST X-Height Adjustable Coilovers 11-15 Kia Optima TF - Excl. HybridThe ST X Coilover suspension was developed for the everyday driver who needs to hug the curves yet retain road comfort. Simple, uncomplicated road performance for those who just want to get in and drive. Add in our wide range of height adjustability; the ST X Coilover will look as perfect as it feels. ST XCoilover kits deliver precise adjustment to your ride height and look of your car. We manufacture an adjustable spring perch made of durable and

The ST X Coilover suspension was developed for the everyday driver who needs to hug the curves yet retain road comfort. Simple, uncomplicated road performance for those who just want to get in and drive. Add in our wide range of height adjustability; the ST X Coilover will look as perfect as it feels. ST XCoilover kits deliver precise adjustment to your ride height and look of your car. We manufacture an adjustable spring perch made of durable and friction-optimized polyamide composite material with a stainless steel insert. Thanks to the composite material corrosion is prevented between the strut and perch ensuring long lasting height adjustability. Galvanized zinc coated steel struts optimize corrosion protection for long lasting use. We add a dust protection system to prevent unwanted dirt and particulate from coming in contact with the hardened chrome piston rod or getting into the valve packs. We reinforce the system with a multi-layered pressure resistant sealing package, mono block guide system and a low friction piston band which works inside the pressure resistant internal damper housing. At ST suspensions we do not accept compromises. As a matter of principle we rely on world class engineering delivered from KW for all our dampers. Why? To simply improve your driving experience! All ST X Coilover kits are application specific for your car and perfectly adapted for everyday life.

  • Elastomer Bump stop with integrated dust protection system prevents water and dirt particles reaching the piston rod and seals. The highly resilient bump stops act as dynamic load limiters while maintaining ride quality and durability.
  • Composite spring perch made from wear-resistant, friction-optimized polyamide composite with an embedded stainless-steel insert. The polyamide composite prevents oxidation while the stainless-steel insert maximizes strength.
  • ST X coilovers are the ideal mix of sporty yet simple. The dampers and spring rate come tuned by our vehicle dynamics engineering in Germany to perfectly match each vehicle specific application.
  • ST coilovers are built by hand by the experts at KW in Fichtenberg, Germany. Each damper is tested on a shock dyno to verify it's making the proper forces before being put into the ST box.
  • Seamless Ride Height Adjustment - ST's composite spring perch and unique trapezoidal thread pitch make ride height adjustability a breeze so you can dial in your preferred look.
  • Galvanized steel housing for improved resistance to corrosion.
  • 5 Year Limited Warranty - Unlimited Mileage
  • Made in Germany

This Part Fits:

Year Make Model Submodel
2011-2015 Kia Optima EX
2014-2015 Kia Optima Limited
2011-2015 Kia Optima LX
2011-2015 Kia Optima SX
2014-2015 Kia Optima SX Turbo
2013 Kia Optima SXL
2014-2015 Kia Optima SXL Turbo
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 18124643015

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4.6 ★★★★★
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Megan Thomas
Draper, US
★★★★★ 5
Gear set!
Amazing kit lasts a long time and makes my skin so smooth and hydrated.
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Reviewed in the United States on June 5, 2026
J
Verified Purchase
Julene R
Lake Worth, US
★★★★★ 5
good product
Effectiveness: This serum focuses on brightening, uneven tone, and early signs of aging using two stabilized forms of vitamin C plus supportive antioxidants. With consistent use, it can help improve overall radiance and reduce the look of dark spots gradually rather than delivering fast, dramatic fading. Texture & Application: Lightweight, silky, and smooth. It spreads easily and absorbs quickly without feeling greasy or heavy. The airless pump helps keep the formula stable and prevents oxidation, which is important for vitamin C products. Key Ingredients Performance: Vitamin C (two stabilized forms) supports brightness and antioxidant protection Kojic acid ester helps even skin tone over time Oryzanol (rice bran antioxidant) helps enhance brightening effects and supports skin defense Overall, it’s a gentler vitamin C approach compared to high-strength L-ascorbic acid serums, making it more suitable for sensitive or beginner users. Skin Feel / Finish: Leaves a soft, natural finish with no sticky residue. It layers well under moisturizer and sunscreen and doesn’t pill when used correctly. Suitable for daily AM or PM use. Durability of Results: Improvements are gradual—typically noticeable after several weeks of consistent use. Best results come with daily sunscreen use since vitamin C works synergistically with UV protection. Value: Very strong value for a budget-friendly serum. It delivers multiple brightening ingredients at a low price point, making it accessible for everyday skincare routines. Overall: A gentle, affordable vitamin C serum that prioritizes steady brightening, antioxidant support, and skin tone improvement over high-intensity results. Best for beginners, sensitive skin, or anyone wanting a simple daily glow-boosting step.
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Reviewed in the United States on May 13, 2026
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Verified Purchase
Luisana
Grantham, US
★★★★★ 5
Amazing Vitamin C at an Affordable Price!
This Vitamin C serum from Good Molecules is honestly one of the best I’ve tried! The texture feels so smooth and lightweight on the skin, it absorbs quickly and leaves my face feeling hydrated without being sticky. It’s super effective for fading acne scars and dark spots, and I always notice extra brightness and glow the next morning after using it. What makes it even better is how affordable it is compared to other Vitamin C serums—such great quality for the price! Plus, the bottle lasts a long time since just two pumps are enough for the entire face. Gentle scent, hydrating, effective, and budget-friendly… I couldn’t recommend it more
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Reviewed in the United States on October 3, 2025
J
Verified Purchase
JJ
Louisville, US
★★★★★ 5
Fantastic Fragrance Free Vitamin C
Really nice Vitamin C product. It goes on nicely without any off putting scent. I tried this one after trying another Vitamin C serum my dermatologist recommended, but the consistency and smell of the other one makes this one a dream to use in comparison. Instead of a dropper, it is dispersed using a pump. The consistency is thin, but not watery. It does not leave my skin feeling sticky. I love not having it drip all over my face. Leaves a nice glow without being shiny. Time will tell how effective it is at fading brown spots, but as with the other Good Molecules products, this is a great product for a great price.
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Reviewed in the United States on May 9, 2026
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Verified Purchase
Heather Olson
Lowell, US
★★★★★ 5
Great buy and a have to try
This is a very nice vitamin C serum/cream. It spreads nicely, so you do need a lot. A little really does go a long way. I wash my face, apply serums, and then apply this on top before my moisturizer. It doesn't pill up at all for me. In fact, it layers really well. It's dry time is fairly quick, and it's a GREAT value for your money. It's also not oily at all. I've been using it for over a week now and I can tell my complexion is brighter and the one dark spots are s bit lighter. I'd say it's pretty effective.
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Reviewed in the United States on March 7, 2026

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