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.
Clutch Disc
SACHS RCS 115 3.4
Sintered metal 2.6 mm, rigid design
SACHS RCS 115 3.4 sintered clutch disc - maximum compactness with extra headroom. The 115 mm diameter minimizes rotating mass and frees packaging space in tight monocoques; the 3.4 mm lining thickness offers noticeably more wear allowance and thermal capacity than 2.6 mm - while maintaining ultra-fast response.
The sintered friction lining is sintered directly onto the carrier plate. This creates a very stiff friction pair with a precise bite point, aggressive launches and lightning-fast engagement. Perfect for single-seaters and prototypes where every gram and millisecond counts.
The 3.4 mm spec hits the sweet spot between weight and durability: low moment of inertia for instant throttle response, plus longer service life and more stable friction than 2.6 mm. Result: reliable torque transfer, consistent performance and reduced service effort.
Key benefits at a glance:
High torque capacity
Low stack height
Higher burst rpm
Extremely light - low mass and inertia
Highly dirt-resistant
Aggressive launch characteristics
The technology
Friction lining - sintered metal
The SACHS RCS 115 3.4 sintered clutch disc from ZF Motorsport is the ideal choice for maximum performance in racing.
The special sintered friction material delivers an aggressive response with hard launches and snap engagement off the line. At the same time, it transmits significantly higher torque, making it particularly suitable for high-output race cars.
As a core component of the modular SACHS RCS 115 clutch system, it is perfectly matched to professional motorsport - from single-seaters to circuit racing and prototypes.
SACHS RCS hub
SACHS RCS 115 3.4 clutch discs are available with different hub spline profiles, precisely matched to the respective gearbox input shaft. This ensures maximum fit, reliable torque transfer and durability in hard racing use.
RCS 115 clutch discs are offered exclusively with a short hub. The short design minimizes moment of inertia, reduces overall pack length and supports direct, precise actuation - ideal for tight monocoques and weight-optimized builds.
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 RACING
Super GT, ELMS,
DTM, STCC, NLS, TCR, GT World Challenge etc.
SINGLE-SEATER
Formula Ford,
Formula 3, Formula 4 etc.
PROTOTYPES
Sports prototypes
Single-seater construction, IndyCar etc.
Description
Manufacturer