ST Suspensions XTA Coilover Kit – BMW 128i / 135i / 135is Convertible (E88)

OVERVIEW

The ST XTA coilover kit for the E88 1 Series convertible gives you height adjustment, 16-click rebound damping and camber-adjustable top mounts on the heavier drop-top chassis.

ST is the value brand of KW Automotive. The XTA sits at the top of the ST coilover range: height adjustable, with 16 distinct clicks of rebound damping adjustment and aluminum unibal top mounts that also allow camber adjustment. The struts are galvanized zinc-coated steel and the spring perch is a composite polyamide item with a stainless steel insert. The kit ships factory-preset and includes a damper setup manual.

SPECS

• Damper family: ST XTA (height and rebound adjustable, adjustable top mounts)
• Front lowering range: 1.4 in to 2.4 in
• Rear lowering range: 1.4 in to 2.4 in
• Damping adjustment: rebound, 16 distinct clicks
• Top mounts: aluminum unibal, camber adjustable
• Strut material and finish: galvanized zinc-coated steel
• Spring perch: composite polyamide with stainless steel insert

PARTS INCLUDED

• Complete coilover kit as supplied by ST Suspensions; see the installation instructions included in the box for the full bill of materials.

TECH RESOURCES

Additional Parts Required

• Four-wheel alignment. A full four-wheel alignment is mandatory after installation and after any subsequent ride-height change.
• Professional installation. Spring compressors and strut service tools are required.
• Check EDC compatibility. This is a passive coilover kit that replaces the OEM dampers. Confirm your car is not fitted with Electronic Damping Control before ordering.

Installation

• Vehicle-specific installation instructions are supplied in the box with the kit.
• A damper setup manual with ST's reference rebound settings is supplied with the kit.
• ST does not publish a public download link for this kit's instruction sheet. Contact Speed Logic if you need a copy before the kit arrives.

Notes

• E88 convertible, rear-wheel drive. The E82 coupe uses a different part number.

PART NUMBER

• 18220862

VEHICLE APPLICATIONS