Cooling

It is vital to keep the proper water temperature!

When the water temperature reaches a certain level, the ECU automatically adjusts the program to compensate which causes a significant loss of power.
Due to the narrow inlet of the stock bumper, even a large aftermarket radiator cannot perform its function to the full extent. Consequently, J'S Racing recognized the importance of the bumper inlet design in order to maximize the airflow toward the radiator.

In order to make the full use of the available airflow and to achieve the maximum cooling efficiency, the clearance on the side and lower part are minimized and the shroud is redesigned. As a result, the air speed and volume going through the radiator are drastically improved.

The system reduces the radiator temperature by 8 degree C and successfully prevents the power loss by avoiding the ECU compensation.

* the result was on the test date. It could vary depending on the weather and other factors.

Aerodynamics

Best shape for the negative lift

Compared to the rear end with the wing, the front lacks the proper downforce.
Upon that point, J'S Racing drastically improved the front downforce by the following design change.

1) We introduced the front wing style used for the GT race cars in order to increase the downforce from the bumper itself. The bumper is consisted of two separate parts – the upper bumper and the lower front wing.

2) The flat panel design is extended toward the radiator core support The front wing design is more advanced from its of S2000. A diffuser style is used for the DC5 front wing.

Furthermore, a carbon front side wing (to be attached to each side of the front wing) is offered as an option.
By keeping the air from escaping to the side, the side wing generates downforce.
When it is used with canard, it increases the air pressure difference between top and bottom side of the canard for more downforce.

The canard is also sold as an option for more downforce.
The canard meets the safety standard with its safer edge style.

It is ideal to set up the side skirt as close to the ground as possible in order to maintain the negative pressure.
However, an extremely close distance from the ground might cause several problems in driving.
Thus, J'S Racing devised a new design to keep the negative pressure without lowering the side skirt too much.

First, the side skirt uses the same shape as the front bumper effectively extending the body width. Second, the design minimizes the airflow sucked from the side.
The actual body width stays the same.
The jack up point also remains same.
The side skirt consists of two parts.
If the parts should have a contact to the ground and be damaged, you can just replace the lower part. This two parts structure increases the cost performance.

Rear bumper has several ducts (each side of the license plate and each side of the end of bumper) to significantly reduce the parachute effect (a drag caused by the trapped air inside the bumper).
The ducts reduce the drag, which considerably raise the top speed.
The bumper's side fin shape streamlines the airflow on the side and consequently increases the downforce.

For a driver who would like a wider front tire, there is an optional dedicated front wide fender available for Type S aero system.
The front wide fender has a duct for streamlining the air, which works for lowering brake temperature and for a higher top speed.

Structure

Strong Structure

The Type S aero system, being installed in a lower part of the body, has possibilities to have a contact with a curb or road surface.
J'S Racing emphasizes the safety of the driving and would like to assure the customers that enough thought is given to how the system is installed on the vehicle to minimize the chance of a fall off of the parts in case of the surface contact. In the designing stage, we considered every situations including the installation on a race car with extreme low ride height and the possibility to hit the curb on a race track or gap on the street.
The structure of the system is strong enough to diminish the damage.
Moreover, the carbon part of the Front Bumper, Side Skirt, and Rear Bumper is a separate component and in the case of damage, only the carbon part is to be replaced by the customer, which saves the replacement cost significantly.

Even though the performance functionality is the first objective, enough attention is paid to the visual impact on the street.
The carbon parts are used to achieve both the sufficient strength and an excellent racing look from “dress up”.

The parts are basically made of FRP.
Substantial research and resource was allocated especially to design the front bumper since it is the parts most likely to bear the impact.
The number of layers and the type of FRP fabric were considered carefully and extensively.
Based on the lots of crash data from actual racing, the strength is reinforced where it is needed, and lightness is emphasized where the extra strength is not called for.

System

Total Aero System

J'S Racing Type-S aero system is an expression of our consistent “Intension”. We strongly recommend a total coordination of all the available Type S parts if the budget permits.
The system will provide an excellent match to Type V or Type S hood and 3D GT Wing.
We wish the customer truly enjoy the excellent performance of our Type S system.