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Designed to make a
difference
ZF Race Engineering's SACHS motorsport clutches have stood for top-tier quality in international racing for decades. The ambition: continuous improvement and the drive to keep pushing the limits. From the lightest clutch used in Formula 1 to proven twin-plate and multi-plate systems in WRC, DTM, NASCAR, Le Mans and the Dakar Rally - ZF Motorsport technology is a core component of many winning cars worldwide.
SACHS Racing Clutch
RCS 1/184 S2.6
Sintered metallic 2.6 mm, rigid design
The SACHS RCS 1/184 S2.6 is the single-plate racing clutch for maximum agility: minimal rotating mass, razor-sharp response and a clearly defined bite point at just 2,25 kg total weight. The 184 mm format keeps overall height compact and drag torque low - ideal for lightweight cars, slalom, hill climb and sprint-oriented circuit setups.
The 2.6 mm sintered metallic lining is directly sintered to the carrier plate. This reduces part count and compressibility, increases the stiffness of the friction pair and improves heat dissipation. Result: rapid rev matching, a repeatable pressure point and a consistent pedal feel - stable even under continuous thermal load.
The high release force of 4.300 N indicates a correspondingly strong diaphragm spring and enables up to 654 Nm maximum engine torque in this specification. Together with the stiff forged aluminum clutch cover (housing) and the high-strength steel pressure plate, it delivers a precisely modulatable, repeatable system for uncompromising motorsport use.
Advantages
High wear volume
High temperature resistance
Long operational life
Less Mass
One of the greatest strengths of the RCS sintered clutch is its low mass and the associated low mass inertia.
The SACHS RCS clutches have been designed for racing with the objective that torque is transmitted rapidly and directly from the engine to the gearbox.
Reducing the weight of the crankshaft drive to lower the moment of inertia will considerably increase vehicle acceleration performance in the lower gears.
Faster Acceleration
If the clutch itself has a moment of inertia (MoI) of 0.061 kgm2, the MoI on the drive wheel will be 180 times higher (in first gear) for a reduction in transmission of 13.4:1 (13.42). If we convert this value into vehicle mass, we arrive around 145 kg of additional weight to be accelerated in first gear.
As a result of the low moment of inertia of the SACHS RCS clutch, shifting times are considerably reduced and the vehicle accelerates much faster.
Technology
Technical Data RCS 1/184:
- Maximum engine torque [Nm] : 654
- Release diameter [mm] : 49
- Release force [N] : 4.300
- Release travel [mm] : 5.0 +0.5
- Mass (weight) [kg] : 2.25
- Moment of inertia [kgm2] : 0.012568
Clutch Cover (Housing)
The ZF Motorsport SACHS RCS 184 clutch cover is made from high-strength forged aluminum and engineered for maximum stiffness at minimal weight. The specific housing geometry supports efficient heat dissipation and stabilizes the clutch pack's temperature window.
A key feature is the extremely wear-resistant, patented aluminum coating. This full-surface hard coating reduces friction and fit wear, protects against corrosion and ensures long service life.
Friction Lining - Sintered Metallic
The RCS 1/184 uses directly sintered 2.6 mm sintered metallic linings: the friction lining is bonded directly to the carrier plate (no pads). This reduces part count and mass, increases the stiffness of the friction pair and minimizes lining compressibility. The result is a very precise bite point, short response times and a clearly defined clutch engagement.
The small lining thickness lowers the rotating moment of inertia of the clutch pack; the engine revs up more freely and load changes are translated more spontaneously. Direct heat transfer into the carrier plate dissipates friction heat quickly, improving repeatability in start sequences.
SACHS RCS Hub
SACHS RCS 1/184 S2.6 racing clutches from ZF Motorsport are available with different hub profiles precisely matched to the respective gearbox input shaft. This ensures perfect fit, reliable torque transmission and maximum durability in demanding competition use.
Hubs are also available in various length versions (short, medium, long). This allows optimal adaptation to the available installation space and ensures correct actuation. The modular ZF Motorsport RCS 184 system enables an individually matched racing clutch with maximum performance, thermal stability and service life. Standard specification for the RCS 1/184 clutch (unless otherwise specified): hub length Long.
Scope of Supply
RCS 184 clutch cover (HA184), aluminum
1x RCS 184 pressure plate (PP184), steel
1x RCS 184 clutch disc, sintered 2.6
Hub length : Long
Quality Made in Germany
ZF Race Engineering has been among the technology leaders in motorsport for years. The combined know-how from top-level racing flows directly into the development of RCS racing clutches. State-of-the-art manufacturing methods, the highest quality standards and motorsport technologies make ZF Motorsport clutches the first choice for maximum performance and reliability - on circuits as well as in rallying, touring and endurance racing.
Applications
CIRCUIT / TOURING
Super GT, ELMS,
DTM, STCC, NLS, TCR, GT World Challenge etc.
FORMULA
Formula Ford,
Formula 3, Formula 4 etc. (RCS115/140)
RALLY
GT2 European Series,
WRC, ELMS, DRM, BRC, FRC etc.
Installation instructions:
As SACHS RCS clutches have not been developed specifically for a vehicle, but are vehicle-independent, the vehicle must be adapted to the clutch (see PDF documents above). The contour of the flywheel, the position, the travel and the shape of the release mechanism as well as the maximum available installation space must be checked and adapted if necessary.
Required information:
When ordering your SACHS RCS clutch, the required profile of the transmission input shaft must be specified. The different profiles offered are listed under „hub profile“. If you have any questions about the product, please do not hesitate to contact us via E-Mail or by telephone on +49 (0)40 / 3999 211.
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