J'S Racing newly created this straight structure type header to fully bring out the performance of the aftermarket exhaust. You can maximize the potential of F20C, F22C engine.
Our late entry to the market requires us to create a header which makes a clear difference.
The more than 2 years of research and development led us to proudly release the header much superior to the competition.
The stock S2000 header is well built. Except for its heavy weight, it works fine for the stock engine. However, when you start modifying ECU and airflow system for more engine power, the stock header becomes a hindrance to fully enjoy the engine potential.
The increased air flow from an intake and more efficient exhaust muffler also require a better header.
As you may have noticed, the design of the aftermarket S2000 header varies widely.
We believe that the design determines the performance of the header where we would like to show our expertise.
We are a forerunner of 50mm
We tested more than dozen of prototypes. The road tests were repeated many times
and the Dynapack was used extensively to measure the performance gain from different diameter and shape of the pipes
While the other manufacturers were using 42.7mm diameter pipe, our research concluded that 50mm and 4-2-1 structure produced the best performance gain. After the release of our header, the 50mm header design is frequently copied by the competitors but our expertise was never imitated.
4 (50mm)- 2 (50mm)- 1 (55-60mm taper) structure produces the most impressive torque and power gain from the low to the top rev range
The torque increase you can actually feel
The increased torque in all the rpm range from 50mm pipe and unique design makes many drivers with AP1 feel they are driving a car with 2.2 liter engine.
The header provides the superb match with our 60RS, 70RS, and 70RR exhaust but it also goes well with other brand exhausts.
High Quality and Low Price
The header is hand-made one by one by the skilled craftsmen using 1.2 mm to 1.5 mm thickness SUS304 stainless. They made sure that all the welding and the smoothing of the joint are perfected
The lost wax casting method ensures that the flange maintains the excellent looks, precision and the strength.
An air-fuel ratio sensor can be attached on the fitting for easy ECU reprogramming. When a sensor is not used, the fitting is to be closed by a nut provided in the kit.
For a further efficiency
A thermal wrapped version is offered as an option (the X-TECK wrapping tape is used).
The thermal wrap increases exhaust temperatures & velocity and it also reduces the oil temperature as much as 10 c, which contributes to higher horsepower.
The wrapping does not use a solid part like a bracket, making it very much trouble free from breaking. Above all the wrapping is extremely effective to contain the heat.
This is a special performance parts for your S2000 for all the driving states from the street to the race track.
and 
are trademarks or registered trademarks of J'S CORPORATION.