ST X-Height Adjustable Coilovers 12+ Audi A6 (C7/4G) Sedan 2.0/3.0/3.0TDI FWD & Quattro

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. The ST X Coilover system is the ideal mix of sportiness and simplicity while still maintaining some comfort on the street. The wide range of ride height adjustability allows you to fine tune your tire and wheel fitments. ST Coilover Kits enable you to individually adjust the ride height of your car to improve the appearance and driving behavior. Depending on your selection, ST coilover kits offer a wide range of adjustments giving you the tools needed to dial them into your requirements. 2012-2018 Audi A6 (C7/4G) Sedan, FWD & Quattro 2.0 + 3.0 + 3.0TDI

• 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

Upgrade the handling, stance, and everyday driving experience of your 2012-2018 Audi A6 C7/4G Sedan with the ST Suspensions ST X Coilover Kit, part number sts1321000B. Designed for 2.0, 3.0, and 3.0 TDI engines with front-wheel drive or Quattro all-wheel drive, this application-specific suspension system combines sporty road performance with comfort suitable for daily driving. Adjustable ride height lets you fine-tune the vehicle’s appearance and accommodate your preferred wheel and tire fitment without sacrificing balanced handling.
ST X coilovers feature vehicle-specific damper and spring-rate tuning developed by ST’s vehicle dynamics engineers in Germany. The dampers are built by KW specialists in Fichtenberg, Germany and tested on a shock dyno to verify proper performance before packaging. Galvanized steel strut housings help resist corrosion, while the composite spring perch uses wear-resistant, friction-optimized polyamide with an integrated stainless-steel insert. This design helps prevent oxidation between the strut and perch while maintaining reliable adjustment over time.
The integrated elastomer bump stop and dust protection system help keep water and road debris away from the chrome piston rod and seals. A multi-layer sealing package, monoblock guide system, low-friction piston band, and pressure-resistant internal damper housing support durability and consistent operation. The unique trapezoidal thread design allows smooth ride-height adjustment, giving you practical control over the vehicle’s stance and handling characteristics.
Feature: Application-specific ST X coilover system for 2012-2018 Audi A6 C7/4G Sedan models with 2.0, 3.0, and 3.0 TDI engines, FWD or Quattro
Feature: Adjustable ride height for customized appearance and wheel-and-tire fitment
Feature: Vehicle-specific spring and damper tuning for sporty performance with everyday comfort
Feature: Corrosion-resistant galvanized steel strut housings
Feature: Friction-optimized composite spring perches with stainless-steel inserts
Feature: Integrated dust protection and elastomer bump stops
Feature: Hand-built and dyno-tested by KW experts in Germany
Feature: Made in Germany with a 5-year limited warranty and unlimited mileage

Features:

• Application-specific ST X coilover system for 2012-2018 Audi A6 C7/4G Sedan models with 2.0, 3.0, and 3.0 TDI engines, FWD or Quattro

• Adjustable ride height for customized appearance and wheel-and-tire fitment

• Vehicle-specific spring and damper tuning for sporty performance with everyday comfort

• Corrosion-resistant galvanized steel strut housings

• Friction-optimized composite spring perches with stainless-steel inserts

• Integrated dust protection and elastomer bump stops

• Hand-built and dyno-tested by KW experts in Germany

• Made in Germany with a 5-year limited warranty and unlimited mileage

Fitment:
Audi A6 Premium 2012
Audi A6 Premium 2013
Audi A6 Premium 2014
Audi A6 Premium 2015
Audi A6 Premium 2016
Audi A6 Premium 2018
Audi A6 Premium Plus 2012
Audi A6 Premium Plus 2013
Audi A6 Premium Plus 2014
Audi A6 Premium Plus 2015
Audi A6 Premium Plus 2016
Audi A6 Premium Plus 2018
Audi A6 Quattro Premium 2012
Audi A6 Quattro Premium 2013
Audi A6 Quattro Premium 2014
Audi A6 Quattro Premium 2018
Audi A6 Quattro Premium Plus 2012
Audi A6 Quattro Premium Plus 2013
Audi A6 Quattro Premium Plus 2014
Audi A6 Quattro Premium Plus 2015
Audi A6 Quattro Premium Plus 2016
Audi A6 Quattro Premium Plus 2018
Audi A6 Quattro Prestige 2012
Audi A6 Quattro Prestige 2013
Audi A6 Quattro Prestige 2014
Audi A6 Quattro Prestige 2015
Audi A6 Quattro Prestige 2016
Audi A6 Quattro Prestige 2018
Audi A6 Quattro TDI Premium Plus 2014
Audi A6 Quattro TDI Premium Plus 2015
Audi A6 Quattro TDI Premium Plus 2016
Audi A6 Quattro TDI Prestige 2014
Audi A6 Quattro TDI Prestige 2015
Audi A6 Quattro TDI Prestige 2016