Many sports car drivers and drivers of sporty compact models regularly take part in track days on racetracks with their road-legal vehicles. For these enthusiasts, the suspension manufacturer KW automotive has specifically developed its KW Clubsport coilovers.
Drivers, who cannot do without a road-legal approval despite regular track days with their Toyota GR Supra (A90, JTSC), can find an ideal retrofit option in the KW Clubsport suspension.
In a certain way, the KW Clubsport is an adaptation of our motorsport suspension developed for the Toyota Supra GT4 race car.
Thanks to the Clubsport coilover suspension with stiffer spring rates and the dampers designed for the use of semi-slicks, the road holding and road grip at high cornering speeds as well as in the driving dynamic limit range benefit significantly.
KW Clubsport – tailor-made performance for the racetrack
On racetracks such as the Circuit de Spa-Francorchamps, Fuji Speedway, Laguna Seca Raceway, Nürburgring Nordschleife, and Silverstone Circuit, production sports car suspensions and even conventional coilovers quickly reach their limits. Often the different asphalt surfaces on older racetracks are a challenge for the interaction between the tire and chassis.
With a suspension with racetrack tuning and separately adjustable damper force, the tires can work better than with a production suspension designed for everyday use. Handling is much more direct with a suspension designed for trackdays like the KW Clubsport coilover suspension.
The unibal bearings (top mounts) on the front axle struts of the KW Clubsport coilover suspension allow the camber values to be adjusted for maximum tire contact area during fast cornering.
The Clubsport suspension provides optimum support for the bodywork in the driving dynamics limit range and significantly reduces body roll. The multi-valve technology used in the dampers also prevents the semi-slick tires from losing grip on poor road surfaces or aggressive curb cutting.
GT4 Motorsports Technology
In the event of suddenly increased damping excitation, the preconfigured high-speed valve opens in addition to the low-speed valve, for rapid compression. Our Clubsport dampers offer the option of adjusting the compression and rebound damping separately so that the Supra’s handling can be adjusted precisely to the track profile and tire stiffness.
With the rebound click setting, a bypass channel in the valve can be opened or closed with 16 clicks to adjust how quickly the suspension rebounds when the load changes at maximum compression. The rebound stage can also be described in the same way as the chassis is connected to the road.
With twelve clicks, the cross-section in the low-speed compression stage valve can be reduced or enlarged to further finetune the damping. The adjustable low-speed compression stage can be used to specifically influence body roll when turning and pitching behavior when braking and accelerating.
The damping for long bumps is also influenced by the low-speed compression stage. The high-speed compression stage is not adjustable on the KW 2-way Clubsport but is pre-configured in advance during damper production so that it can take the fright of short bumps or the notorious cross joints of the Caracciola carousel floor plates on the Nordschleife.
Thanks to the included parts report, the KW Clubsport coilover suspension can also be used in everyday life on public roads and the dampers can be adjusted to a road setting. In addition, the suspension allows for stepless lowering despite the low center of gravity of the Toyota GR Supra.
As part of the parts appraisal, the tested adjustment range is 15 to 35 millimeters at the front axle and 20 to 40 millimeters at the drive axle.
The KW Clubsport coilover suspension is already in development for the about 100 kg lighter four-cylinder models of the Supra.
Photos KW (1x + Video), Gruppe C (1x), Sam Du (5x), IND Distribution (5x), Toyota Motorsport (1x Video)