RCS 115 Clutch Housing

Function: The clutch housing accommodates the pressure plate, intermediate plates and clutch discs, guides the components precisely and transmits torque within the modular RCS system. The high housing stiffness supports defined modulation, stable component positioning and reproducible shifts.

Design: The SACHS RCS 115 is the most compact RCS size and has been developed for particularly lightweight, low-inertia racing clutches. Compared with larger RCS sizes with aluminium housings, the current RCS 115 version is manufactured from a high-strength steel clutch cover (housing). This allows the housing, despite its 115 mm size, to absorb very high circumferential, spring and temperature loads.

Sintered version: The RCS 115 sintered variants are designed for 3- and 4-plate clutches and, depending on the version, cover a torque range from 1,450 to 1,935 Nm. The high-strength steel clutch cover (housing) forms the durable carrier for the high-performance sintered metallic clutch pack.

Carbon version: The RCS 115 carbon variants are also available for 3- and 4-plate clutches and, depending on the version, cover a torque range from 860 to 1,150 Nm. The carbon lining type offers very low weight, low moment of inertia and particularly fast response in the drivetrain.

Clamp load: In combination with the pressure plate, diaphragm spring, intermediate plates and clutch discs, the clutch housing contributes to precisely defined clamp load. This supports repeatable torque transmission and consistent engagement behaviour in motorsport operation.

Release system: The RCS 115 version is designed for a release diameter of 38 mm. This allows the clutch housing to be configured to suit compact push-type actuation systems, release bearings and concentric slave cylinders.

Thermal management: The special housing geometry supports efficient heat dissipation and stabilises the temperature window of the clutch pack – particularly important with short shift windows, high engine speeds and repeated thermal load.

Installation & flywheel

Flywheel contour: The flywheel contour must be checked when using the SACHS RCS 115 racing clutch. Depending on the version, stepped or flat flywheels are used. Precise machining of the flywheel is required for clutch function, runout and long-term performance.

Service inspection: Check housing guides, contact surfaces, coating and fits regularly. In the event of wear, damage or impermissible play, assess adjacent components together to ensure clamp load, torque transmission and shift precision over the long term.