KW functional and quality features

INDIVIDUAL LOWERING

Fulfills every wish

KW coilovers, KW height-adjustable spring sets and KW DLC AirSuspensions allow a stepless lowering within the scope of the tested parts certificate. For example, our Street Comfort products allow an individual height adjustment with subtle lowering of 10 - 50 mm, while the Street Performance products allow the maximum technically possible lowering, which can be between 45 - 85 mm depending on the vehicle. The lowering can be designed according to the personal needs of the user and, depending on the product category, a vote ranging from comfort to performance can be selected.

REBOUND ADJUSTMENT TECHNOLOGY

Two-stage rebound valve with adjustable rebound damping

The rebound damping is precisely matched to the respective vehicle on the in-house vehicle dynamics test bench and the setting is fixed in the middle area. With 16 exact clicks, an individual adjustment can then be defined and you can choose between more comfort or more body control. The two-stage patented TVR-A technology enables the low volume flows to flow through an adjustable conical low-speed bypass at slow damper speeds and to open the main rebound valve for the large volume flows at higher piston speeds. This results in a significant increase in driving comfort without affecting the high speed in the safety-relevant area.

COMPRESSION ADJUSTMENT TECHNOLOGY (LOWSPEED)

Two-stage compression valve with low-speed setting

The patented pressure stage valve has two separate, spring-loaded valves for small and large volume flows. The pressure level adjusted for the respective vehicle type on our 7-Post-Rig is delivered in a medium factory setting. With 12 exact clicks, the adjustable pressure stage valve can reduce or enlarge the cross-section in the low-speed valve and thus ensure more or less pressure damping. At the same time, the spring-preloaded needle valve opens its maximum valve cross-section at sudden high piston speeds together with the spring-preloaded main valve and, with its blow-off characteristic, knows how to prevent unwanted progressive increases in force in the high-speed range. This makes it possible to better support the vehicle body and at the same time to offer more comfort than with conventional valve technology at high ad acceleration. The compression damping setting is always supplied in conjunction with a separate rebound setting, as only an independent 2-way damper setting allows real performance optimization.

PRESSURE LEVEL ADJUSTMENT TECHNOLOGY (LOW- & HIGHSPEED)

Two-stage compression valve with low and high speed setting

This is THE high-end technology from motorsport for the most demanding street and track performance customers. Two separate valves and a 2-way adjustable pressure stage valve enable pressure damping to be changed separately in the low and high-speed range. The settings are made using two setting wheels with click raster, which have 16 setting positions in the valve housing for high-speed (with 15 clicks) and in the low-speed housing with 7 setting positions (with 6 clicks). When tuning on the KW driving dynamics test bench, the pioneering V4 coilover kit receives the best street performance tuning in a medium basic setting and an additional setting recommendation for occasional use on track days.

The 3A Clubsport coilover kit is set to the medium factory setting specifically for track day use and an additional setting recommendation for driving on the road to the racetrack. Based on the factory setting, the damping can be set to be harder or softer in low / high speed. This technology has a blow-off characteristic with large cross-sections. The resulting high low-speed forces enable the best possible support for the vehicle body without having the body lift off at high damper speeds that are excited by the wheels (crossing of curbs). The separate low and high speed setting is always supplied with an additional rebound setting and thus guarantees an independent 3-way damper setting.

COMPOSITE SPRING PAD

Because the difference lies in the details

The height-adjustable KW spring plate is made of a resistant and friction-optimized polyamide composite material with a stainless steel insert. In contrast to anodized aluminum adjustable spring plates, the polyamide composite prevents possible oxidation. In connection with the Inox-Line, this guarantees the permanent functionality of the height adjustment.

TRAPEZOIDAL THREAD

The perfect height adjustment thread

In contrast to ordinary threads, KW uses a friction-optimized and dirt-resistant trapezoidal thread that is characterized by its low adjustment forces. Thanks to its large cross-sectional area, it also has a higher load-bearing capacity.

INOX-LINE

The only really permanent corrosion resistance

The suspension struts of the KW coilovers are made of high quality stainless steel and are therefore rust-free. In contrast to other solutions, no coatings can be removed when the lowering is adjusted, which enables 100 percent corrosion resistance and thus an unlimited service life of the height-adjustable KW suspension struts. The lowering via the dirt-resistant trapezoidal thread in connection with the polyamide threaded ring guarantees long driving pleasure. So even after years, the stepless lowering is not impaired by environmental influences.

SURGE TANK

KW 2-pipe technology knows no limits

The use of the KW expansion tank enables additional volume for more oil and more cooling surface for systems that are particularly stressed. The expansion tank, which is filled with a low gas pressure, also enables position-independent installation and can also accommodate the adjustable pressure stage valve for more damper travel.

7POST DRIVING DYNAMICS TESTBED

Testing like in Formula 1

On the in-house 7Post vehicle dynamics test bench from KW, which is also regularly used by automobile manufacturers and international racing teams, the KW coilovers are optimally coordinated depending on the design and target group. In addition to driving tests on public roads and on race tracks, the 7Post driving dynamics test bench is indispensable for perfect fine-tuning. Under objective laboratory conditions that can be reproduced at any time, work is carried out daily on the KW driving experience that is valued worldwide.

UNIBAL SUPPORT BEARING

Expands the track performance setting options

Depending on the vehicle type, the aluminum unibal support bearings have a scalable camber setting and can optionally also be adjusted in the wake. This allows the camber angle to be adjusted so that a maximum tire contact area is achieved when cornering and handling is even more direct. Note: Increased fall values ​​are only recommended for track day use, as they reduce tire life in road use.

TECHNICAL COMPONENT REPORT

Certified safety

The parts certificate, which describes the individual lowering options in connection with the respective vehicle, is always included in the scope of delivery. This enables acceptance and subsequent entry in the vehicle documents without any problems. The parts certificate also contains precise vehicle assignments, requirements and instructions for safe assembly.

KW TVR-A technology

Twin Valve Rebound - Adjustable

The rebound damping is matched to the respective vehicle on the in-house vehicle dynamics test bench and placed in the middle range when delivered. 16 exact clicks are available for the individual setting, so that a decision can be made between more comfort or more body control. The two-stage patented TVR-A technology enables the low volume flows to flow through an adjustable conical low-speed bypass at slow damper speeds and to open the main rebound valve for the large volume flows at higher piston speeds. This results in a significant increase in driving comfort without affecting the high speed in the safety-relevant area.

OIL FLOW FACTORY SETTING 8 CLICK

The bypass channel of the rebound adjustment is open in a medium setting. At slow damper speeds, small oil volume flows occur, which flow via the bypass on the main valve and the adjustable bypass opening.

Result: a basic setting that corresponds to our target parameters of the respective vehicle type and purpose and guarantees an optimal rebound and compression ratio.

OIL FLOW WITH REBOUND CLOSED

Rebound adjustment bypass channel is closed. The complete oil volume flow is throttled via the setup-specific, preset spring valve on the piston. The maximum possible traction damping forces are achieved.

Result: The sporty, tight rebound adjustment helps to control the vehicle's rolling and pitching movements even more.

OIL FLOW WITH REBOUND OPEN

Rebound adjustment bypass channel is open. The bypass oil quantity is no longer available to the spring valve on the piston and the rebound damper forces are reduced in the low-speed range and the lowest possible low-speed rebound damping is achieved.

Result: The low level of traction increases the rolling and driving comfort

HIGHSPEED CHARACTERISTICS

At high damper speeds and large volume flows, the spring-loaded main valve also opens. The oil flows through a maximum valve cross-section.

Result: The rebound setting works in the comfort-relevant low-speed range and has no safety-relevant effects on the high-speed range.

KW TVC-A technology

Twin Valve Compression Adjustable

The patented pressure stage valve with TVC-A technology has two separate spring-loaded valves for small and large volume flows. The pressure level matched to the respective vehicle type on our 7-post rig is delivered in a medium factory setting. With 12 exact clicks, the adjustable compression valve can reduce or enlarge the cross-section in the low-speed valve in order to achieve more or less compression damping. At the same time, the spring-preloaded needle valve opens its maximum valve cross-section at sudden high piston speeds together with the spring-preloaded main valve in order to prevent unwanted progressive increases in force in the high-speed range with its blow-off characteristics. This makes it possible to better support the vehicle body and at the same time to offer more comfort at high wheel accelerations than with conventional valve technology. The compression damping setting is always supplied in conjunction with a separate rebound setting, as only an independent 2-way damper setting allows real performance optimization.

FLOW IN BASIC SETTING 6 CLICKS

The spring-loaded adjustable bypass valve is open in a medium basic setting. At slow damper speeds, the low volume flow of oil flows through the bypass valve. The spring-loaded main valve is closed at slow damper speeds and enables additional low-speed pressure damping.

Result: an optimal vehicle-specific coordination with very good roll and pitch support.

OIL FLOW WITH CLOSED PRESSURE LEVEL IN THE BOTTOM VALVE

Closing the spring-loaded bypass valve increases the compression damping in the low-speed range. The closed compression stage creates a more progressive characteristic of the low-speed compression damping without influencing the high-speed damping.

Result: A sporty, tight coordination of the low-speed compression stage can be used for more roll support or for targeted tire warming without affecting the comfort of the high-speed damping.

OIL FLOW WITH OPEN PRESSURE LEVEL IN THE BOTTOM VALVE

The low-speed compression damping is reduced by opening the spring-loaded bypass valve.

Result: The reduced low-speed damping enables comfort to be increased, for example to compensate for a harder tire construction without affecting the safety-relevant support of the vehicle in the high-speed range.

BLOW-OFF CHARACTERISTICS

The main compression stage valve opens at higher damper speeds for a transition to a degressive compression stage damper identification. In the event of sudden high-speed excitations, the maximum valve cross-section opens on the main pressure stage valve and the spring-loaded, adjustable low-speed bypass valve. This happens regardless of the selected low-speed setting and enables an additional oil volume flow to escape.

Result: In the event of sudden high-speed stimuli, such as crossing curbs or cross-highway joints, this blow-off characteristic ensures that the wheels remain in contact with the road - regardless of the selected low-speed damping.

KW TVCLH-A technology

Twin Valve Compression Low Highspeed-Adjustable

High-end technology from motorsport for the most demanding street performance and track performance customers. Two separate valves and a 2-way adjustable pressure stage valve enable pressure damping to be changed separately in low and high speed. The settings are made using two setting wheels with a click pattern, which have 16 setting positions in the valve housing for the high-speed range (for 15 clicks) and 7 settings for the low-speed range (for 6 clicks). When tuning on the KW driving dynamics test bench, the V4 coilover kit receives the best street performance tuning in a medium basic setting and an additional setting recommendation for occasional use on track days. The Clubsport 3-way coilover kit receives the setting in the middle factory setting especially for track day use and an additional setting recommendation for driving on the road to the racetrack. Based on the factory setting, the damping can be set to be harder or softer in low and high speed. The TVCLH-A technology has a blow-off characteristic with large cross-sections, which enables high low-speed forces for the best possible support of the vehicle body, without lifting the body off at high damper speeds when the wheel is excited (passing over curbs). The separate low and high speed setting is always supplied with an additional rebound setting for an independent 3-way damper setting. Starting from the factory setting, the damping can be set to be harder or softer in low and high speed. The TVCLH-A technology has a blow-off characteristic with large cross-sections, which enables high low-speed forces for the best possible support of the vehicle body without allowing the body to lift off in the event of high damper speeds triggered by the wheel (passing over curbs). The separate low and high speed setting is always supplied with an additional rebound setting for an independent 3-way damper setting. Based on the factory setting, the damping can be set to be harder or softer in low and high speed. The TVCLH-A technology has a blow-off characteristic with large cross-sections, which enables high low-speed forces for the best possible support of the vehicle body, without lifting the body off at high damper speeds when the wheel is excited (passing over curbs).The separate low and high speed setting is always supplied with an additional rebound setting for an independent 3-way damper setting without allowing the body to lift off at high damper velocities (crossing of curbs). The separate low and high speed setting is always supplied with an additional rebound setting for an independent 3-way damper setting without allowing the body to lift off at high damper speeds when the wheel is excited (crossing curbs). The separate low and high speed setting is always supplied with an additional rebound setting for an independent 3-way damper setting.

OIL FLOW IN BASIC SETTING 8 CLICKS HIGHSPEED AND 3 CLICKS LOWSPEED

KW Clubsport 3-Way Coilover Kit - Track Setup KW V4 Coilover Kit - Street Performance Setup The low-speed valve is open in the basic setting. At low damper speeds, the oil flows through the open bypass. The spring-loaded high-speed pressure plate is closed

Result: an optimal vehicle-specific coordination with very good roll and pitch support. The setting enables good feedback from the vehicle on the driving situation. When driving over edges, curbs or transverse joints, the high-speed valve opens and allows the wheel to compress. The influence of the excitation on the structure is reduced, the structure remains quieter.

OIL FLOW WITH FULLY OPEN HIGH AND LOWSPEED PRESSURE LEVE

In the open low-speed setting, the oil flows through the largest throttle cross-section. The pressure damping is reduced at low damper speeds.

Result: A reduction in the low-speed pressure reduces minor bumps and stimuli in the body, and comfort is increased. The tire load is reduced. Roll and pitch movements increase. Reduced high-speed damping reduces the "body impact" when driving over curbs.

OIL FLOW WITH FULLY OPEN HIGH AND LOWSPEED PRESSURE LEVEL

In the open low-speed setting, the oil flows through the largest throttle cross-section. The pressure damping is reduced at low damper speeds.

Result: A reduction in the low-speed pressure reduces minor bumps and stimuli in the body, and comfort is increased. The tire load is reduced. Roll and pitch movements increase. Reduced high-speed damping reduces the "body impact" when driving over curbs.

BLOW-OFF

The high-speed valve also opens at high damper speeds and large volume flows. The oil flows through a maximum valve cross-section. This is the transition to a degressive damper characteristic.

HYDRAULIC LIFT

Lift me up

With the KW hydraulic lift system (HLS for short), the body can be raised at the push of a button for more ground clearance, even while driving. Obstacles such as speed bumps or steep parking garage ramps can be easily overcome thanks to HLS from KW. The system is offered as a vehicle-specific retrofit solution for OEM dampers or as a complete chassis solution including the hydraulic systems. The KW hydraulic lift system is available for the front axle as well as for both axles depending on the application.

APP CONTROL

The KW iSuspension innovation

With the KW iSuspension apps, customer-specific adjustments can be made easily and intuitively using your own smartphone:

1.) The app of the DDC ECU coilovers allows you to select the three defined damper setups (Comfort / Sport / Sport +) on the one hand, but also to completely individual adjustments of the adaptive damper on the other hand.

2.) With the DLC app, you can easily choose between self-defined lowering and the standard vehicle height and, in conjunction with our DLC air suspension modules, make precise adjustments to the vehicle height.

Both apps can be downloaded for free from the Apple or Google Play Store.