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BMW
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Front Lowering: .2" to .8"
Rear Lowering: .2" to .8"
KW height adjustable spring kits are a great alternative to conventional lowering springs. You no longer have to be satisfied with a fixed lowering height. KW HAS systems allow you to adjust the vehicle ride height with the KW height adjuster even after the kit has been installed. Your vehicle does not only get a more dynamic look with the KW height adjustable spring kit, but also the steering behavior and response of the standard dampers become more agile. All driver assistance systems and comfort features of a factory adaptive or electronic suspension remain operational and work harmoniously with KW'svehicle-specific spring set up.
KW uses high-quality springs made of chrome-silicon steel with spring rates designed specifically for each respective OE suspension damper and wheel load. KW's expertise and engineering ensure the spring rates will pair perfectly with the different damper characteristics of your factory adaptive electronic suspension. Along with the use of high-quality materials and the included KW ride height adjustment mechanisms, KW height adjustable spring kits always includes the vehicle-specific bump stops with dust protection system to protect your factory suspension against wear & tear caused by road grime and debris.
Every KW kit undergoes extensive stress testing before production and is developed and manufactured exclusively in KW's company headquarters in Fichtenberg, a small in town in Germany, to meet the high standards of KW quality management. For KW as a German manufacturer, it goes without saying that KW coilover kits will exceed the original equipment manufacturer quality, and offer useful and innovative solutions. With an application list comprising more than 4,600 options, KW guarantees an outstanding selection backed by their Limited Lifetime Warranty.
DIRECT REPLACEMENT
LIFETIME WARRANTY!
BUY A PAIR FOR THE PRICE OF FACTORY SINGLE!
The rear springs on the 1999-2005 E46 323i 325i 328i and 330i models have a chronic broken spring problem. If it hasn't happened to you yet it will. Springs are nothing more than exposed steel and they rust easily. After a while a section of the spring actually breaks off.
A broken spring is very dangerous - the spring is no longer mounted correctly in the suspension and it cannot support the weight of the car, especially when cornering. The ride also suffers as the suspension is no longer able to absorb the bumps and impacts from the road. Aside from a visual inspection of the spring itself you might notice a clunking sound or banging noise coming from the front or rear. An inspection of the noise should also include other related items in the suspension: bushings, ball joints, links, mounts, etc. We also recommend replacing the rubber spring pads on the top and bottom of the spring because they lose their shape over time. Check if your car has 5mm or 15mm thick pads.
The factory BMW springs sell for $140+ each. We sold and replaced enough while working in New England that we were able to get a strong grasp of the issue and come up with our own springs that are an improvement over the factory springs in every way. These springs are made in Germany using high grade spring steel that is then shot-peened for longer life and powder-coated for protection. These are the same height as the stock replacement BMW springs which makes them a direct replacement.
Sold only as a pair.
This item fits the following BMWs:
1999-2005 E46 BMW 323i 325i 328i 330i - Sedan
KW H.A.S. Coilover Kit - BMW F12 F13 M6 offers precise height adjustment while preserving the factory electronic damping control system. This kit replaces the factory spring perches with KW's threaded height-adjustable perches, allowing for lowering of .2" to 1.2" in the front and .4" to 1.2" in the rear. It includes progressive rate lowering springs, shortened bump stops, and new dust boots to protect the original BMW shocks.