ST XA Performance Coilovers – BMW M240i / 340i / 440i (F22/F30/F32, RWD) B58

OVERVIEW

The ST XA coilover kit lowers the F-chassis B58 M240i, 340i and 440i (RWD) with height-adjustable ride height and externally adjustable rebound damping. Developed alongside KW Automotive, it lets you refine the driving dynamics to suit your preference — sportier and more track-stable, or softer and more comfortable — with a simple turn of the adjustment knob.

SPECS

• Height-adjustable ride height plus externally adjustable rebound damping
• Twin-tube damping principle with pressure-resistant damper housings, manufactured at KW
• 16 distinct clicks of adjustable rebound damping (compression fixed)
• Galvanized strut bodies, multi-sealed with additional coating for corrosion resistance
• Adjustable spring perch in friction-optimized polyamide composite with stainless steel insert
• Preset to ST's factory recommended damper settings, verified on KW shock dynos
• TÜV-approved; 5-year unlimited-mileage warranty

PARTS INCLUDED

• Set of 4 ST XA coilovers with springs
• Adjustment collars, spanner wrenches and hardware
• Damper setup manual

TECH RESOURCES

• Electronic damping (EDC): this kit is for cars without factory adaptive dampers. If your car is EDC-equipped, the electronic damping control must be deactivated using a cancellation kit (KW part no. 68511086), sold separately
• Ride height and rebound damping are adjustable — a professional wheel alignment is required after installation
• Prefer fixed damping at a lower price? See our ST X Coilovers (1322000F) for the same chassis
• Professional installation and corner-balancing recommended

PART NUMBER

• 1822000F
• EDC deactivation kit (if equipped, sold separately) — KW 68511086

VEHICLE APPLICATIONS