The ST X is a height-adjustable coilover kit built by KW in Fichtenberg, Germany, using the same valving and damper technology as the KW Variant 1 but with a galvanized zinc coated steel strut housing in place of stainless steel. Front ride height adjusts 0.8 to 2.0 inches and rear ride height 0.6 to 1.4 inches through a polyamide composite spring perch with an embedded stainless steel insert, which stops corrosion between the strut and the perch so the height stays adjustable years later. Damping is fixed rather than adjustable, tuned in Germany for this specific chassis, and every twin-tube damper is shock dyno tested before it is boxed. A multi-layered sealing package, mono block guide system, low friction piston band, and elastomer bump stop with an integrated dust boot protect the hardened chrome piston rod from water and dirt.
| Type | Height-adjustable coilover kit (ST X), fixed damping |
| Position | Front and rear (four corner kit) |
| Front Lowering | 0.8 to 2.0 in |
| Rear Lowering | 0.6 to 1.4 in |
| Damper | Twin-tube, non-adjustable, built by KW |
| Strut Housing | Galvanized zinc coated steel |
| Spring Perch | Polyamide composite with stainless steel insert |
| Quantity | 1 kit (4 coilovers) |
| Warranty | 5 year limited warranty, unlimited mileage |
| Part Number | 13210041 |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2000-2006 | Audi | TT Quattro | Base |
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