F30 F31 F34 BMW 3 Series ST Lowering Spring Kit 40mm Front Rear

ST lowering springs for the F30, F31 and F34 BMW 3 Series - drop 40mm front and rear without sacrificing daily drivability. Designed for fast-road use, they work flawlessly with factory adaptive dampers and retain OEM ride compliance.

• Epoxy-coated chrome-silicon-steel for corrosion resistance and longevity
• Vehicle-specific spring rates for 316i, 320i, 328i, 316d, 318d and 320d variants
• Multiply tempered and partly tubed for consistent performance
• No fitment guesswork - engineered for these chassis only