SACHS RCS 140 Clutch Housing
Clutch cover (housing) for compact SACHS RCS 140 racing clutches
Compact, lightweight and precise: the SACHS RCS 140 clutch cover housing is the central support structure of ZF Motorsport’s modular Racing Clutch System and has been developed for high-revving, weight-optimised racing clutches with a very short design.
The RCS 140 version is suitable for demanding racing applications where low moment of inertia, fast shifts, high temperature stability and precise component guidance are decisive.
Versions
System: SACHS RCS 140 multi-plate racing clutch
Configuration: for 1-, 2-, 3- and 4-plate versions
Release diameter: 38 mm and 49 mm
Friction materials: carbon and sintered metallic
Note: the clutch housing must be combined with approved RCS 140 pressure plates, intermediate plates and clutch discs specific to the series. Select according to the number of plates, release diameter, friction material and application profile.
Benefits
Compact 140 mm design for particularly lightweight, free-revving racing clutches
Available for 1-, 2-, 3- and 4-plate clutches in the modular SACHS RCS system
38 mm and 49 mm release diameters for different actuation concepts
Designed for sintered metallic and carbon friction materials in professional motorsport
Low moment of inertia for spontaneous response and fast gear changes
High housing stiffness for precise modulation and accurate component guidance
Supports precisely defined clamp load for repeatable torque transmission
Motorsport-specific geometry for efficient heat dissipation and stable performance in racing use
Technology
RCS 140 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: High-strength aluminium with series-specific RCS 140 geometry. The compact construction reduces rotating mass and moment of inertia and enables a torsionally stiff, precisely guided assembly for performance-focused motorsport applications.
Clamp load: In combination with the pressure plate, diaphragm spring, intermediate plates and clutch discs, the clutch cover (housing) contributes to precisely defined clamp load. This supports repeatable torque transmission and consistent engagement behaviour in motorsport operation.
Release system: The RCS 140 version is available for release diameters of 38 mm and 49 mm. This allows the clutch cover housing to be configured to suit the respective release bearing, concentric slave cylinder and actuation system.
Friction materials: The SACHS RCS 140 clutch cover housing is designed for sintered metallic and carbon lining types. Depending on the application profile, the combination of housing, pressure plate, intermediate plates and clutch discs enables high thermal load capacity, fast response and stable torque transmission.
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 notes
Installation & flywheel
Flywheel contour: The flywheel contour must be checked when using the SACHS RCS 140 competition clutch. Precise machining of the flywheel is required for clutch function, runout and long-term performance.
Fastening: M8 screws of at least property class 10.9 with internal hexagon and washers are recommended for fastening the clutch. The tightening torque is 25 Nm.
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.
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