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.
Racing Clutch Disc SACHS RCS 184 S2.6
Lightweight sintered metal clutch disc for modular SACHS RCS 184 racing clutches
The SACHS RCS 184 S2.6 sintered metal clutch disc from ZF Motorsport is developed for modular SACHS RCS 184 multi-plate racing clutches. It combines the 184 mm diameter with just 2.6 mm lining thickness and therefore offers a particularly responsive solution for motorsport applications where low rotating mass, direct power transmission and precise engagement are required.
The S2.6 version is the particularly lightweight variant within the RCS 184 sintered metal clutch discs. Compared with S5.2 and S7.8 versions, the focus is not on maximum wear reserve, but on a very fast response of the clutch pack during short, intensive load phases.
The 184 mm format provides a practical middle ground between the very compact RCS 140 and the large-format RCS 200. Compared with smaller 140 mm versions, the RCS 184 provides more friction surface and thermal reserve, while remaining more compact and agile than a 200 mm system.
Depending on the RCS 184 configuration, the SACHS RCS 184 S2.6 sintered metal clutch disc is available with different hub profiles and with short, medium and long hub lengths. Selection is made to match the intended hub length, the ZF gearbox code of the gearbox input shaft and the approved combination in the RCS 184 clutch pack.
Versions
System: SACHS RCS 184 multi-plate racing clutch
Component: clutch disc / driven plate
Friction material: sintered metal friction lining
Lining thickness: 2.6 mm
Version: rigid clutch disc
Short hub length: RCS 184-S2.6-K-XXX
Medium hub length: RCS 184-S2.6-M-XXX
Long hub length: RCS 184-S2.6-L-XXX
XXX: placeholder for the ZF gearbox code of the gearbox input shaft or the respective hub profile
Note: The correct SACHS RCS 184 S2.6 sintered metal clutch disc is selected according to the RCS 184 clutch configuration, hub length, ZF gearbox code, hub profile and approved combination in the clutch pack.
Benefits at a glance
184 mm size as a balance of agility and friction surface
2.6 mm version for low rotating mass and very fast response
Direct engagement behaviour for motorsport-style load changes
More thermal reserve than smaller 140 mm versions
More compact and responsive than large-format 200 mm systems
Suitable for sprint use, qualifying and short intensive load phases
Available with short, medium and long hub length for different RCS 184 configurations
Suitable for modular SACHS RCS 184 racing clutches from ZF Motorsport
Technology
Sintered metal 2.6 mm
The SACHS RCS 184 S2.6 sintered metal clutch disc is designed for fast response, direct power transmission and a low moment of inertia. The sintered friction lining supports very direct engagement behaviour and clear feedback in motorsport use.
The 2.6 mm lining thickness reduces the rotating mass in the clutch pack and promotes fast rpm changes. Compared with S5.2 and S7.8 versions, this variant places greater emphasis on agility; wear reserve and thermal capacity are deliberately designed for short, intensive application profiles.
The 184 mm diameter creates a practical combination of compact design, fast response and sufficient friction surface for high loads. This makes the S2.6 version suitable for vehicles where low inertia and durable power transmission are required together.
Hub & hub length
The SACHS RCS 184 S2.6 sintered metal clutch discs are available with vehicle-specific hub profiles matched to the respective gearbox input shaft. The correct hub profile is essential for accurate fit, clean power transmission and operating reliability in motorsport.
The hub lengths short, medium and long are available for this product group. The short version is listed as RCS 184-S2.6-K-XXX, the medium version as RCS 184-S2.6-M-XXX and the long version as RCS 184-S2.6-L-XXX. The XXX acts as a placeholder for the ZF gearbox code of the gearbox input shaft or the respective hub profile.
When replacing a worn clutch disc, the existing hub length version of the SACHS RCS 184 clutch must be retained exactly. For new builds, conversions or individual assembly of an RCS 184 clutch pack, only the hub length combinations approved by ZF Race Engineering at the factory for the respective clutch configuration may be used.
RCS 184 system
As part of the modular SACHS RCS 184 clutch system, the clutch disc is combined with approved pressure plates, intermediate plates and clutch covers. The decisive factors are the number of discs, lining thickness, installation height and the correct setup of the entire clutch pack.
The 2.6 mm version is the particularly lightweight variant within the RCS 184 sintered metal clutch discs. It is suitable for racing clutches where a compact clutch system is to be combined with fast response and low rotating mass.
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 / touring cars
Suitable for circuit racing and touring car applications where fast gear changes, direct power transmission and low rotating mass are the main priorities.
Sprint & qualifying
The 2.6 mm version is especially suitable for short, intensive operating windows where spontaneous response and precise engagement are more important than maximum wear reserve.
Rally / rallycross
Direct clutch disc for vehicles with frequent load changes, fast gear changes and demanding conditions on asphalt, gravel or mixed surfaces.
Performance conversions
Suitable for high-performance conversions and motorsport vehicles where an RCS 184 clutch system with direct response, compact design and lightweight sintered metal clutch disc is required.
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