Experience the Superior Performance of Swift Springs

Not all springs are made equal, and Swift Springs has invested years of expertise and research into perfecting the art of spring manufacturing. The result of their dedication is the innovative "HS5.TW" proprietary steel alloy, which sets a new standard in the world of springs. Swift Springs has successfully achieved several crucial objectives with this material, including:

• Consistently maintaining the spring rate throughout the stroke
• Offering the maximum possible stroke length
• Providing outstanding durability to prevent spring height loss
• Creating exceptionally lightweight springs

Founded in 1997, Swift Springs has built an impressive track record, catering to diverse applications ranging from oval track and dirt racing to the needs of enthusiastic street drivers. With a wealth of experience and a history of collaboration with world-class race teams and drivers, Swift Springs ensures they have the perfect spring to meet any demand.

Swift Springs understands that not all springs are created equal. While many springs may share similar dimensions and spring rates, the manufacturing process and materials used are pivotal to their performance. Drawing upon years of experience and extensive research, Swift Springs has refined the spring manufacturing process to perfection. In their relentless pursuit of excellence, Swift Springs developed a proprietary steel alloy known as "HS5.TW." This material accomplishes the primary objectives Swift had in mind:

• Maintaining the most consistent spring rate throughout the stroke
• Providing the largest amount of stroke
• Ensuring the highest durability against spring height loss
• Offering the lightest weight

Since its establishment in 1997, Swift Springs has taken on a diverse array of tasks and applications, ranging from oval track and dirt racing to enthusiastic street driving. They have accumulated invaluable experience working with world-class race teams and drivers from around the globe. Given the varied demands they've encountered over the years, you can have full confidence in Swift Springs to deliver the perfect spring solution for any requirement.

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.

Everyone knows the E53 has been notorious for the air ride system to fail. Even BMW technicians will tell you it's not if your air bags will fail, its when. Repairs can become fairly costly as well, with each bag plus labor potential costing you hundreds and hundreds of dollars. Not only that, but the repairs never seem to be permanent, whether its a sensor going off a leaky air bag or the compressor. Get rid of these problems for good, with this Coil Spring conversion kit. Using OEM springs will give you similar ride height as the air ride without compromising handling or comfort.

**Note: Installing this kit will trigger a Self-Leveling Suspension Inactive Light**

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.

• Allows precise height adjustment for improved aesthetics and handling.
• Retains factory electronic damping control functionality.
• Progressive rate lowering springs enhance performance and comfort.
• Shortened bump stops prevent bottoming out during aggressive driving.
• Includes new dust boots for added protection of OE BMW shocks.