Product details
OVERVIEW
The ST X coilover kit for the rear-drive E91 Sports Wagon and E93 Convertible 3 Series replaces the factory struts and springs with a height-adjustable coilover set.
ST is the value brand of KW Automotive, and every ST coilover is built by hand at KW in Fichtenberg, Germany. The ST X is the entry point in the coilover range: a fixed-damping, height-adjustable kit built on galvanized zinc-coated steel struts with a friction-optimized composite spring perch and stainless steel insert.
SPECS
- Damper family: ST X (height adjustable, fixed damping)
- Damping adjustment: none (fixed valving)
- Strut material and finish: galvanized zinc-coated steel
- Spring perch: friction-optimized composite with stainless steel insert
- Warranty: 5-year limited, unlimited mileage
PARTS INCLUDED
- Front and rear coilover struts with ST springs
- Spanner wrench for ride-height adjustment
- Installation documentation and technical component report
TECH RESOURCES
- Required: four-wheel alignment after installation and after any ride-height change.
- Required: professional installation with spring compressors and strut service tools.
- Rear-wheel-drive only; xDrive wagons use part number 13220049.
- Not for cars with Electronic Damping Control (EDC).
- Vehicle-specific installation instructions for ST 13220033 ship in the box with the kit.
- Speed Logic offers professional installation and alignment: request an appointment.
PART NUMBER
- 13220033
VEHICLE APPLICATIONS
| Make | Model | Chassis | Engine | Years |
|---|---|---|---|---|
| BMW | 328i Sports Wagon | E91 | N51 / N52 3.0L I6 | 2007–2012 |
| BMW | 328i Convertible | E93 | N51 / N52 3.0L I6 | 2007–2013 |
| BMW | 335i Convertible | E93 | N54 3.0L Twin-Turbo I6 | 2007–2010 |
| BMW | 335i Convertible | E93 | N55 3.0L Turbo I6 | 2011–2013 |