KW Height Adjustable Spring Kit – Mercedes-Benz C63 AMG (205)

Lowering Range:
Front: 0-20mm
Rear: 10-30mm

KW height adjustable springs kits are a great alternative to conventional springs. You don’t have to be satisfied with a fixed lowering as you can adjust the 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 behaviour and response of the standard dampers becomes more agile. All driver assistance systems and comfort features of an adaptive series suspension remain with our vehicle specific developed spring set up.

No more 30-30 or 40-40!

With conventional lowering springs you have to decide on the lowering from the beginning, but not with the KW height adjustable spring kits. Depending on the vehicle specific application you can change the lowering within the adjustment range with the threaded spring perch when the springs are already installed. For example, the KW height adjustable spring kit for an Audi S5 allows you to lower the car in the range of 5-35 mm. You will not have any difficulties to adjust the lowering when changing your wheel/tire combination.

OEM Quality

The from KW used high-quality springs made of chrome-silicon steel are at the KW coilover spring kits in their spring rates vehicle specific adjusted to the respective standard suspension dampers and wheel loads. At the development of the respective spring kits we consider that the spring rates will perfectly harmonize with the different damper characteristics of your adaptive series suspension.

With their high quality (surface) finish as well as the KW height adjuster, our KW height adjustable spring kits delivery content always includes the vehicle-specific bump stops with dust protection system to protect your standard suspension against tear & wear caused by spray and salt.

• individual height adjustment of the standard suspension kit
• adaptive damper control remains active
• vehicle specific spring rates
• better steering behaviour
• improved looksk

Simply put – Wavetrac is the only gear diff on the market that does not lose all drive when one axle is unloaded. Axles become unloaded in aggressive driving, track cornering, extremely slick surfaces, etc. It happens more than most people realise.

We won’t go into torque bias ratios or the concept of how torque biasing diffs work at this point. Let’s get to how the Wavetrac affects performance:

For example, you have a conventional gear diff (OEM, Quaife, MF, OBX, Truetrac, Torsen, etc.), you’re on a race track for a track day and during cornering your inside wheel bumps over the curbing. This is normal for track driving. The issue is that for the brief moments your inside tire becomes unloaded when bouncing over curbs, your other wheel is not getting drive – is not putting power down. Gear diffs need load on both axles in order to function. The result on a track (or during aggressive driving) is that there are many times when a normal gear diff supplies only intermittent power to the gripping wheel.

Now, same track with Wavetrac: the patented cam device in the Wavetrac prevents loss of drive when that inside wheel is unloaded. The device is able to generate a load inside the diff (to replace the lost load as it happens) that can then be biased to the gripping wheel – in the end making more consistent power delivery through a corner. That makes the car more predictable, and faster overall.

Other benefits:

• Patented Carbon Fibre Bias Plate for the pinions. All other gear type LSDs run the pinions on the housing, meaning the friction from 0 miles is different to 100 miles, thus effectiveness is reduced over the life of the diff. With the Wavetrac performance is consistent with the Carbon Fibre bias plates!
• Patented Wave Profile eliminates the effect of a near to and zero load condition drive ability issues found in all other gear type ATB LSDs.
• ARP Bolts used throughout for superior faster reliability.
• 9310 steel gears run in billet or forged steel bodies.
• Manufactured & Designed in the USA

WAVETRAC: Smooth is Fast

The beauty of the Wavetrac is that it is ideally suited to high performance road cars that see track use. It is very strong, yet transparent to both driver and traction control electronics during regular driving. On the track or in spirited road use, it provides drive to both wheels without the handling issues that traditional clutch type diffs create (there is no tendency to push/understeer with a Wavetrac).

The Wavetrac outperforms other gear type differentials because unlike them, it won’t lose drive when one axle is unloaded (which happens more often than you’d think).

Lastly, one of the most underrated benefits of the Wavetrac is its smooth delivery of power near the limit. Its patented design makes for a very predictable, smooth addition of power when you need it most – when things are at their limits: on the edge of traction mid-corner and using throttle to keep it there; or coming into a corner a little hot, but quickly back on it to maintain exit speed…

These situations are often subjective to the driver, but the benefit can be felt. The Wavetrac makes you faster because it lets you drive with confidence. Smooth is fast.