KW Suspension Coilover Kit V4 Bundle for Mercedes AMG C63 C63 S Sedan (W205) w/ electronic dampers (3A725081)

KW Suspension Coilover Kit V4 Bundle for Mercedes AMG C63 C63 S Sedan (W205) w/ electronic dampers (3A725081)KW Variant 4 coilovers are a combination of our innovative, race proven technology, as well as decades of experience tuning high end sports cars, super sedans and exotics such as the Audi R8, Audi RS6, BMW M5, Lamborghini Aventador LP 750 4 SV, Dodge Charger SRT Hellcat, Mercedes AMG GT and more. In addition to the individually adjustable ride height the KW Variant 4 coilover kit allows an independent adjustment of the rebound damping as well as the

KW Variant 4 coilovers are a combination of our innovative, race proven technology, as well as decades of experience tuning high end sports cars, super sedans and exotics such as the Audi R8, Audi RS6, BMW M5, Lamborghini Aventador LP 750-4 SV, Dodge Charger SRT Hellcat, Mercedes AMG GT and more. In addition to the individually adjustable ride height the KW Variant 4 coilover kit allows an independent adjustment of the rebound damping as well as the low-speed and high-speed compression damping. Each KW Variant 4 coilover kit is delivered with a vehicle-specific comfort setting and with the integrated adjustment controls the damping characteristics can be set quickly and intuitively transformed to an optimized performance setup.

The 3-way adjustable high-performance dampers in the KW Variant 4 coilover kits feature independent adjustment of the rebound damping utilizing patented TVR-A technology, as well as the low speed and high speed compression damping utilizing TVCLH-A technology. The KW Variant 4 coilovers are based upon successful race technology utilized by multiple overall winners of the ADAC Zurich 24h Nurburgring race.The new KW Variant 4 coilovers are exclusively developed for select high-performance vehicles, which benefit greatly from the KW suspension technology to improve their driving dynamics.

The two-stage, patented TVR-A (Twin Valve Rebound - Adjustable) technology enables a small volume of oil to flow through an adjustable, conically shaped, low-speed bypass during low damper speeds, while in the case of higher damper speeds, the main rebound stage valve opens allowing a larger volumn of oil to flow. This provides a big improvement in terms of ride comfort without influencing the safety-relevant high-speed range. There are 16 precise clicks available for individual settings, so you can choose between more comfort or more body control.

With 6 precise clicks in low-speed and 14 precise clicks in high-speed range of the compression damping, the cross-sections in the Variant 4 valves are decreased or increased, in order to achieve either more or less compression damping. The TVCLH-A (Twin Valve Compression Low High - Adjustable) technology has an engineered blow-off characteristic providing a large cross-section that allows substantial low-speed forces to provice optimum support of the vehicle body without unsettling the body in the case of sudded high damper stimulation induced by the wheels, like driving over apex curbing. The separate low and high-speed settings are always supplied with an additional rebound setting utilizing TVR-A technology for a truely independent 3-way damper setup.

With KW Variant 4 coilovers you can achieve maximum lowering within an approved lowering range that ensures a proper functioning suspension with adequate travel after your car is lowered. Even after years of use you can easily adjust the ride height thanks to the dirt resistant trapezoid thread and composite adjustment collar.

KW Variant 4 Coilovers Feature:

• Customized Suspension Lowering. KW coilover suspensions, KW height adjustable springs, and KW DLC Air Suspensions allow the suspension to be lowered within the vehicle's technical limitations. For example, our Street Comfort products allow for a customized ride height setting with mild suspension lowering from 10 - 50 mm, while the Street Performance products allow the maximum technically possible suspension lowering range from 45 - 85 mm, depending on the vehicle. This means that the suspension can be lowered to suit the personal needs of the user and, depending on the product category, a setting ranging from Comfort to Performance can be chosen.
• Composite Spring Seat. The KW coilover spring seat, also known as a spring perch, is constructed with a wear-resistant, friction-optimized polyamide composite material encompassing a stainless steel insert. In contrast to the anodized aluminum adjustable spring seats, the polyamide composite material prevents any possible oxidation while the stainless steel insert maximizes strength.
• Trapezoidal Threads. In combination with the Inox-Line stainless steel coilover struts, this guarantees the long-term functionality of ride height adjustability. In comparison to common coilovers, KW uses a friction-optimized trapezoidal thread which is less sensitive to dirt and requires less force to adjust. Its large cross-section also provides a higher load-bearing capacity.
• INOX-Line. KW's coilover suspension struts are manufactured from high-quality stainless steel that is rust-proof. In contrast to other solutions, Inox-Line coatings will not wear off while adjusting the suspension making KW coilover struts 100 percent corrosion resistant with an unlimited lifespan. Lowering the suspension using the trapezoidal thread in combination with the polyamide composite spring seat guarantees long term usability. Even after years the ride height adjustability is not affected.
• Rebound Adjustment. The rebound stage damping is precisely tuned to the respective vehicle at our in-house drive dynamics test facility, delivered in the middle of the range out of the box. Individual customization can be achieved in 16 precise clicks, allowing you to choose between more comfort or more body control. The two-stage patented TVR-A technology allows the oil to flow through an adjustable, conical low-speed valve during slow piston speeds, while during higher piston speeds the main rebound stage valve opens to handle the flow of large volumes of oil. This provides major improvements in ride comfort without influencing the high-speed.
• External Reservoir. KW Twin-Tube Technology Knows No Limits. The KW reservoirs provide additional oil and cooling capacity for particularly high force systems. The reservoir, which is filled with low gas pressure, can be fitted anywhere and accommodate the adjustable compression valve to provide more working space inside the damper.
• TVR-A Technology. The two-stage, patented TVR-A (Twin Valve Rebound - Adjustable) technology enables a small volume of oil to flow through an adjustable, conically shaped, low-speed bypass during low damper speeds, while in the case of higher damper speeds, the main rebound stage valve opens allowing a larger volumn of oil to flow. This provides a big improvement in terms of ride comfort without influencing the safety-relevant high-speed range.
• TCLH-A Technology. High-end motor sports technology for the most demanding street performance and track performance customers. The 3-way adjustable dampers utilize an independent and separately adjustable 2-way compression valve that enables compression damping changes for both the low and high-speed range. The compression adjustments are made via two adjustment controls on the housing using precise clicks. There are 16 settings for the high-speed range (with 15 clicks) and 7 settings for the low-speed range (with 6 clicks). During tuning at the KW 7-post Driving Dynamic Test Center, the V4 coilover suspension is tuned so the preset recommended setting for best road performance is in the middle of the adjustment range with an additional recommended settings for the occasional track use. The 3-Way Clubsport coilover suspension is tuned with a preset recommended setting designed for track day use, with an additional recommended setting for the normal highway use. Starting from the factory setting, the damping can be set harder or softer in both the low and high speed ranges. The TVCLH-A technology has a blow-off feature with large cross-sections which allows for a substantial low-speed forces to provide optimum support of the vehicle body without unsettling the body in the case of sudden high damper stimulation induced by the wheels, like driving over apex curbing. The separate low and high-speed settings are always supplied with an additional rebound setting utilizing TVR-A technology for a truly independent 3-way damper setup.
• KW 7-Post Driving Dynamic Test. Used regularly by automobile manufacturers and international race teams, KW's in-house 7-post drive dynamics test facility is utilized to optimally tune KW coilover suspensions according to the design and target group. The 7-post drive dynamics test facility is essential for fine tuning along with actual on-road evaluation on public roads and race tracks. In objective laboratory conditions, which can be reproduced at any time, we work everyday to give our customers the internationally-esteemed KW driving experience.
• Technical Component Report. The technical component report is always included in the package and outlines the guidelines for lowering the suspension of the respective vehicle. The technical component report ensures the vehicle remains usable when set within the guidelines provided in the installation instructions, allowing for an inspection and subsequent entry into the vehicle documents to be carried out without any problems. The technical component report also includes precise vehicle classification, requirements, and tips for safe fitting.These reports are required for road legal approval in many countries, check local laws.

KW is the Benchmark for coilovers. KW Variant 4 coilover rewards the sporty driver with its harmonious pre-configured setup. For each vehicle our engineers develop a specific damper setup and spring rate to increase the driving pleasure with an optimal balance of sportiness and practicality. As with all KW coilovers, the engineers at KW develop the vehicle-specific KW damper tuning and spring rates with comprehensive testing on the Nurburgring Nordschleife and in the KW 7-post chassis dynamics test center. You are not buying a mass produced, generic coilover kit, a KW coilover has been developed specifically for your particular vehicle. As a manufacturer, KW uses only its own resources, high quality components and the damper technology that has all developed in-house. With the KW Variant 4 "inox-line" coilovers, body roll will be reduced during compression giving you the benefit of a more genuine and direct sporty handling while driving.

• Specifically Tuned Package Per Application
• Rebound Valve Assembly
• KW Coilover Struts are Made of Stainless Steel
• Vehicle Specific Chasis Development
• In House Production in Fichtenberg, Germany
• Each KW Coilover Development Undergoes Endurance Testing

Height adjustable front and rear axles (front axle threaded strut housings, rear axle adjustable springs + dampers). Valving is adjusted by adjustment knobs, rebound is only adjustable if the top of the piston rod is accessible. This will depend on the design of the vehicle.. Electronic damping control has to be deactivated. Deactivation kit is included in the delivery.. Variant 4 struts / dampers made of aluminum or kit is a combination of aluminum and stainless steel per axle