MSS uses a stacked rear spring design combined with progressive-rate main springs to achieve high levels of comfort even with a lowered ride height. Two active springs and three distinct spring rates deal with a much wider array of situations than a single static spring rate. The stacked springs allow a moderate and comfortable ride thanks to a "soft" initial spring for minor bumps and road irregularities. The MSS approach with a triple spring rate is unique and is remarkably effective in real-world driving. We tested multiple cars with these springs and were genuinely impressed with how ride comfort improved over the factory suspension, even with a lowered ride height.
Spring rates are developed specifically for your chassis to retain as much ride comfort as possible, even with a lowered suspension. Ride height has been precisely engineered to work with the travel of the stock shock/strut and new bump stops are included that allow lowering with the proper shock travel.
Manufactured in the UK and TUV approved. Springs are made by Eibach with a lifetime warranty.
Lowering amounts will vary depending on factory suspension options. Do not exceed 50mm of lowering height and maintain a F:R rake of 20mm. Springs will settle into a final ride height after approximately 2,000 miles.
MSS - BMW X3M X4M F97 F98 Urban Adjustable Lowering Springs
2019+ BMW X3M F97, w/ and w/o Competition
2019+ BMW X4M F98, w/ and w/o Competition