CSOhara Chromoly Steel Lightweight Sports Flywheels are available in 4.3 kg and 5.6 kg. The 4.3 kg model is specially designed for AP1 and can be expected to minimize torque loss in sports driving bands and improve response and acceleration performance. You can use it with confidence without worrying about judder, which can easily occur due to a processed lightweight stock flywheel with a reinforced clutch. The 5.6 kg model is specifically designed for

If you feel discomfort in the clutch pedal stroke… The discomfort in the clutch pedal stroke is thought to be due to the sliding part with the release bearing becoming worn, increasing the clearance and increasing the resistance due to neck movement. This is a countermeasure product with improved wear resistance due to WPC treatment. Replacement is especially recommended when using a reinforced clutch or when purchasing a new clutch. The base product is the Honda stock parts.

CSOhara Driveshaft Spacers prevent the driveshaft from coming off. To prevent problems with driveshafts coming off due to sudden inputs when setting a geometry where the knuckle arm moves away from the centre due to lowering, negative cambering, correction parts installation, etc.

CSOhara Duracon Differential Mount Rings work like 2 stage action. Under low force, such as when experiencing 1G, the limited restraining force allows for smoother movement. However, under high-load conditions involving driving torque and lateral G-forces, this component steps in to prevent excessive motion by canceling the rubber mounts but engaging with the mount's outer perimeter. This deliberate design choice effectively manages stress without compromising performance, ultimately enhancing traction.

CSOhara Aluminium Differential Mount Rings give you another option. If you are looking for higher suppression power than that made by Duracon, although using the same suppression method, you can expect higher effects by changing the material. During low-force situations, such as when experiencing 1G, the limited restraining force allows for smoother movement. Under high-load conditions involving driving torque and lateral G-forces, this component steps in to prevent excessive motion by canceling the rubber mounts but engaging with the mount's outer perimeter.

CSOhara Reinforced Rear Hub for High-Load Situations is designed specifically to address cracking issues that may arise from heavy loads with the installation of wide, high-grip tires. To mitigate these concerns, it is advised to incorporate this upgraded hub during hub-bearing replacement procedures. This reinforced hub comes equipped with bullet-type hub bolts, offering ease of wheel installation as a standard feature. The bullet hub bolts are 15mm longer than the stock bolts.

The renewed CSOhara large capacity differential case has become the standard for the S2000 owners in Japan. This differential case accommodates a maximum oil volume of 2.3L, ensuring optimal functionality for your vehicle (Minimum required oil volume is 2.0 Litre.) This helps prevent rapid temperature increases, subsequently maintaining the ideal operational conditions for the LSD and final gear.

CSOhara OS Giken Super Lock LSD is based on the OS Giken Super Lock 2-Way LSD (Spec X) and specifically tuned to CSOhara specification. It is meticulously designed to offer a neutral effect that seamlessly integrates with your vehicle's rotating dynamics. The precise consideration of lock timing and cam angle ensures a smooth and consistent locking mechanism, distinguishing it from conventional LSDs.

CSOhara Carrosser Cusco LSD is the 1.5WAY LSD featuring a unique concept that prioritizes balanced performance without tipping the scales towards overpowering acceleration or inadequate deceleration. Unlike conventional disc spring type MZ or spring type RS systems, its design ensures a refined and steady initial performance, offering perceived effectiveness beyond the standard settings. By keeping the configuration conservative, we eliminate abrupt shifts in acceleration and deceleration behaviors, providing a smoother driving experience.

CSOhara Reinforced Stud Bolt for Side Bearing Cap improves installation force of the side bearing cap in the differential. By utilising specially designed stud bolts, customers can now elevate the tightening torque to a maximum of 80N/m, a significant jump from the stock value of 45N/m.

CSOhara WPC plus Tin Treated Final Gear is available in 3.9, 4.1, 4.3, or 4.44. This gear set has undergone advanced WPC treatment to enhance durability, coupled with the additional benefit of tin shot treatment for increased surface strength.

CSOhara Solid Pinion Distance Collar stabilises of Pinion Bearing Preload. It replaces the stock pinion crushable collar of the final gear to ensure rigidity and prevent pinion oscillations. It effectively combats poor tooth contact resulting from heat damage and loss of bearing preload torque under heavy loads.

CSOhara Oil Catch Tank for Honda S2000 (RH) is a space-saving oil catch tank that utilises battery space - If you have a larger battery, it must be changed to a smaller battery (B19L). It is designed to be installed by inserting the plate under the battery. Residual oil is drained from the top drain using the included kerosene pump.

CSOhara Low Engine Mount Bracket is designed to lower the center of gravity without affecting geometry. It aims to lower the center of gravity by lowering the engine by 20mm and the transmission case by 10mm. The lower roll axis improves maneuverability. The joint angle of the propeller shaft flange is also optimized.

CSOhara Duracon Engine Mount Ring is designed to make the existing engine mounts semi-rigid. The response to the steering angle of lateral G-force at high speeds is fast, and the tire feedback information can be felt linearly, helping to reduce time loss caused by excessive steering or insufficient load transfer. *Not suitable for those who expect stock-level vibration.

CSOhara VTEC Solenoid Spool Valve Cap is for aesthetic countermeasures against rust/dirt on the spool valve responsible for VTEC switching. Although it is not a functional engine part, you can expect a visual refreshment effect that is more than you can imagine. The heatsink shape promotes heat dissipation.

CSOhara Engine il Filler Cap is designed as a measure to prevent heat damage and cracks - typical issues in Honda engines. It is very effective as a countermeasure for Honda vehicles that are prone to filler cap cracking problems due to aging and vibration. It is designed with consideration for use in circuits, etc., so maintainability is also improved.

CSOhara Lightweight Battery Stay is an Olive brown alumite finish with satin blasting treatment. It is only 67g while the stock stay is 76g. 9g lighter!

CSOhara Coolant Breather Heating Waterway Deleting Kit is designed to change and divert the antifreeze heater waterway for reducing intake air temperature by suppressing surge tank temperature rise, promoting radiator efficiency by reducing cavitation air, and countermeasures against knocking by reducing heat accumulation in the first cylinder.

CSOhara Intake Manifold Insulation Gasket Kit is designed to block heat conduction, lower intake air temperature, and increase oxygen density. This is an insulating gasket that suppresses the temperature rise of the intake manifold due to engine heat. As the intake air temperature decreases, you can expect an increase in power due to the increase in oxygen density.