BMW F20 F21 M135i M140i ST Lowering Spring Kit 30mm Front Rear

ST lowering springs for the BMW F20 and F21 1 Series - including M135i and M140i - drop the car 30mm front and rear. No guesswork: these are vehicle-specific, not generic.

• Engineered for F20, F21 (1K2, 1K4) saloons from 2011, covering M135i, M140i and 125d
• Fully compatible with adaptive and electronic dampers - no warning lights or ECU errors
• Chrome-silicon-steel construction, epoxy coated for corrosion resistance
• Multiply tempered, partly tubed design for consistent performance and longevity
• Balanced spring rates preserve ride comfort while sharpening turn-in for fast road or track day use