SKU: 22008151490

ST Suspension X Height Adjustable Coilover Kit for 05-11 Audi A6 (4F/C6) Sedan 2WD, Quattro (13210059)

Sale price$490.05 Regular price$544.50
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Ships within 48 hours · Estimated delivery Aug 17 - Aug 22

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Description

ST Suspension X Height Adjustable Coilover Kit for 05-11 Audi A6 (4F/C6) Sedan 2WD, Quattro (13210059)Need to get low? ST coilovers feature a continuous thread construction for height adjustment from moderate to eXtreme! Each coilover is manufactured by KW automotive's expertise and capabilities ensures maximum quality and fantastic driving dynamics. Once installed, the ST X coilover can easily be adjusted using a polyamide ring on the galvanized, multiple sealed strut. Adjustment is different for each car, but typically you can expect between 35 and

Need to get low? ST coilovers feature a continuous thread construction for height adjustment from moderate to eXtreme! Each coilover is manufactured by KW automotive's expertise and capabilities ensures maximum quality and fantastic driving dynamics.

Once installed, the ST X coilover can easily be adjusted using a polyamide ring on the galvanized, multiple-sealed strut. Adjustment is different for each car, but typically you can expect between 35 and 65mm of lowering on both the front and rear axles. For lowered cars as standard (such as the BMW E9x 3-series) the ST X coilover features a range of 30 to 60mm (front axle) and 25-55mm (rear axle).

Improved driving dynamics and handling- Designed in conjunction with KW Germany, ST X coilovers deliver a sporty handling by reducing the car's bodyroll during compression as well as improving agility when driving fast. The high quality production of each ST X coilover includes a low-friction and pressure resistant housing alongside a chrome-plated piston rod for maximum longevity. A mono block guide and ST seal package ensures the twin-tube dampers remain free of dirt particles in all weather conditions.


Lowering with Style: the ST X coilovers

  • Individual lowering within the TUV-tested adjustment range
  • Front and rear axle thread adjustment (when possible)
  • Galvanized coilover struts with additional coating for optimized corrosion protection
  • Complete solution with adjustable spring plate, race spring system and bumpers with dust protection
  • Powerful twin-tube dampers with high-quality components for maximum longevity

ADVANTAGES OF A ST COILOVER SPRING STRUT:

  • ST Suspensions - Spring Strut Construction
  • Excellent all around performance, provides a balance between performance and comfort for everyday use
  • High-quality components for long durability
  • Use of twin-tube technology, independent reactions from damping inputs minimized chassis vibrations and increase driving dynamics
  • Coilovers come with all necessary components, vehicle-specific certificate and insallation instructions

Functional principle of twin tube shock absorbers
With a Twin-Tube shock absorber, the piston works inside of an inner Tube. The space between the inner tube and the casing is used as an equalization chamber. Changes in volume due position of the piston rod change the oil level in the equalization chamber between the outer casing and inner Tube.

Compression phase:
When the car swings downwards in the direction to the road, the piston rod is moved downwards.The oil displaced by the piston rod is pressed into the equalization chamber between the Tubes via specially designed orifices in the compression valve at the lower end of the inner Tube. The resistance that is created through this valve creates the actual compression forces. Oil underneath the piston also flows upwards through the piston check valve with low resistance which also influences the damper characteristics.

Rebound phase:
When the car swings upwards, away from the road, the shock absorber is extended. The piston rod is extending outward from the housing. The rebound phase valve at the lower Tube resists the oil that flows downwards through the holes in the space above the Tube. Therefore the upward motion is slowed down. When the piston rod is pulled out of the case, its volume is balanced out by the oil that flows from the equalization chamber back into the inner tube through the compression check valve.



Functional principle of mono tube shock absorbers
With a one-piston shock absorber, the piston works directly in the damping case. Both, traction and also compression phase valve are integrated into the piston at the end of the piston rod. Depending on the velocity with which the shock absorber is compressed or extended, the forces rise. A characteristic is the separating piston that separates the oil from the gas space which is under strong pressure. The gas space balances the oil expansion with temperature differences and volume changes while the piston rod retracts. The separating piston thereby moves upwards and downwards. The gas pressure of 25-30 bar in the separating space is necessary in order to support the damping forces in direction of the pressure direction.

Compression phase:
When the car swings downwards in the direction to the road, the piston rod is moved downwards. The compression phase valve on the top of the valve resists the oil that streams upwards through holes. Therefore, the downward movement is slowed down. The separating piston is thereby lowered by the same degree as the piston retreats downwards. The gas pressure underneath the separating piston thereby prevents the oils from foaming above the piston.

Rebound phase:
When the car swings upwards, away from the road, the shock absorber is extended. Thereby, the piston rod is moving out of the damping case. The rebound phase valve at the lower piston resists the oil that flows downwards through the holes in the space above the piston. Therefore the upward motion is slowed down. The separating piston is thereby lifted upwards by the same degree as the piston extends.

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: 22008151490

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RA
Lowell, US
★★★★★ 5
When in a pinch, even Monaco couldn’t tell the difference.
Size: XX-Large, Color: Navy
Here’s the revised review with the updated final paragraph: --- **When in a pinch, even Monaco couldn’t tell the difference** There I was, stranded in the Swiss Alps, of all places, when an urgent call came through—a last-minute invite to a charity gala in Monaco. You can imagine my predicament. No tuxedo, no time to fly back to Dutchess County to retrieve the one I had custom-tailored in Sardinia by Fabrizio, the island’s finest (and only) tailor. Fabrizio’s tuxedo, you see, wasn’t just any suit. I had it made after a rather *unique* incident involving a chess tournament, a peculiar art heist, and the world’s finest pecorino cheese. But I digress. With no time to return to Dutchess County—or even Sardinia—there I was, frantically searching for something that wouldn’t make me look like an underdressed disaster among the crème de la crème. Amazon to the rescue. I stumbled upon this navy blue tuxedo with a black shawl collar and, in a state of mild desperation, ordered it around midnight. It arrived before I even woke up the next morning. Amazon’s overnight delivery, an absolute lifesaver. I put it on, and, to my surprise, the fit was near perfection—almost as if Fabrizio himself had secretly slipped his measurements to the manufacturer. The deep navy color was striking, and the black shawl collar gave just the right amount of contrast. It looked like a tuxedo far more expensive than the one I’d ordered in a slight state of panic. At the event, the tuxedo didn’t just blend in—it stood out. More than a few people took notice, including a former diplomat who, with raised eyebrows, asked if I’d had it custom-made in Milan. I simply smiled and let the mystery linger. The tux held its own through hours of mingling, dancing, and even a few strategic maneuvers to avoid the advances of a rather persistent heiress. And by the end of the night? Not a wrinkle to be found. Now, about the fit—be warned. It's tight. Very tight. If you decide to give this tux a try, order two or even three sizes up. And unless you have time to see a tailor, the trousers will almost certainly need hemming. In a real pinch, fabric tape will do the trick. But once you’ve got the sizing sorted, it’s all smooth sailing from there.
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Reviewed in the United States on September 8, 2024
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Verified Purchase
Raquel Charles
Fort Morgan, US
★★★★★ 5
Super Clean
Size: Small, Color: Royal Blue, Size: Small, Color: Royal Blue
This is a really nice suit. My son got a lot of compliments
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Reviewed in the United States on May 12, 2026
L
Verified Purchase
Lou502
Belleville, US
★★★★★ 3
Tricky Fit
Size: 3X-Large, Color: Black
First order returned - pants fit, jacket & vest too small. Reordered a size up - pants too big, jacket & vest fit. The pants had to be hem and waistband taken in. And still need suspenders. My advice, give yourself enough time for alterations.
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Reviewed in the United States on November 3, 2024
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Verified Purchase
GB
Grantham, US
★★★★★ 4
Good quality
Size: 3X-Large, Color: Black
Loved the quality for the price. Fit is more for a size under what is listed. The pants are hip huggers not waist high.
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Reviewed in the United States on April 16, 2025
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Latrice Mackey
Lowell, US
★★★★★ 5
Order right size
Size: XX-Large, Color: Royal Blue
The suit fits my Husband perfectly
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026

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