SACHS RCS 140 S3.4 Racing Clutch Disc 881864001889
Lightweight sintered metal clutch disc with 3.4 mm lining thickness for SACHS RCS 140 racing clutches
The SACHS RCS 140 S3.4 sintered metal clutch disc 881864001889 from ZF Motorsport is a high-quality driven plate for modular SACHS RCS 140 multi-plate racing clutches. It combines the very compact 140 mm diameter with 3.4 mm lining thickness and is designed for fast response, direct power transmission and a low moment of inertia in motorsport.
This version is aimed at applications where compact dimensions, short shift times and precise engagement are the main priorities. Compared with the very lightweight S2.6 version, the S3.4 offers more friction material reserve, while remaining significantly more agile than S5.2 or S7.8 clutch discs designed more strongly for service life.
The RCS 140 format is especially designed for compact racing clutches with limited installation space. Combined with the 3.4 mm version, it creates a responsive clutch disc for vehicles where low weight, direct response and solid material reserve need to be combined.
The SACHS clutch disc 881864001889 identifies the specifically selected version with the matching hub profile for the respective gearbox input shaft. The clutch disc is intended for use within approved SACHS RCS 140 clutch configurations.
Versions
Part No.: 881864001889
System: SACHS RCS 140 multi-plate racing clutch
Component: clutch disc / driven plate
Friction material: sintered metal friction lining
Lining thickness: 3.4 mm
Version: rigid clutch disc
Hub profile: vehicle- and gearbox-specific, matched to the gearbox input shaft
Note: The part number 881864001889 identifies the specifically selected SACHS RCS 140 S3.4 sintered metal clutch disc. Before installation, part number, hub profile, hub length version and approved RCS 140 clutch configuration must be checked against the existing vehicle and gearbox setup.
Benefits at a glance
Very compact 140 mm size for limited installation space
3.4 mm version as a balance of agility and material reserve
More wear reserve than 2.6 mm sintered metal versions
More responsive and lighter than thicker S5.2 and S7.8 versions
Direct engagement behaviour for motorsport-style load changes
Suitable for sprint use, formula cars and compact motorsport applications
Vehicle-specific hub profile for the respective gearbox input shaft
Suitable for modular SACHS RCS 140 racing clutches from ZF Motorsport
Technology
Sintered metal 3.4 mm
The SACHS RCS 140 S3.4 sintered metal clutch disc 881864001889 is designed for fast response, direct power transmission and a low moment of inertia. The sintered friction lining supports clear engagement behaviour and direct feedback in motorsport use.
The 3.4 mm lining thickness increases the material reserve compared with the very thin S2.6 version without fundamentally changing the character of the lightweight RCS 140 system. This makes this clutch disc especially suitable for applications where fast response and slightly longer service life are required together.
Thanks to the 140 mm diameter, the clutch disc remains particularly compact and lightweight. The S3.4 version is therefore suitable for motorsport vehicles where limited installation space, reduced rotating mass and precise power transmission are decisive.
Hub profile
The hub profile of the SACHS RCS 140 S3.4 clutch disc 881864001889 is matched to the respective gearbox input shaft. This creates an accurate connection between clutch disc and gearbox, which is essential for clean power transmission and high operating reliability in motorsport.
When replacing a worn clutch disc, the existing hub length version of the SACHS RCS 140 clutch must be retained exactly. For new builds, conversions or individual assembly of an RCS 140 clutch pack, only the factory-approved hub length combinations for the respective clutch configuration may be used.
Before installation, the hub profile should be checked against the existing gearbox input shaft as well as the clutch cover, intermediate plates, pressure plate and approved RCS 140 configuration.
SACHS RCS 140 system
As part of the modular SACHS RCS 140 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 part number 881864001889 identifies the specific version of this SACHS RCS 140 S3.4 sintered metal clutch disc. For safe function, clutch disc, friction partners, clutch cover, pressure plate, intermediate plates and installation dimensions must be considered as a complete system.
Applications
CIRCUIT RACING / TOURING CARS
Super GT, ELMS,
DTM, STCC, NLS, TCR, GT World Challenge etc.
FORMULA
Formula Ford,
Formula 3, Formula 4 etc.
RALLY
GT2 European Series,
WRC, ELMS, DRM, BRC, FRC etc.
Description
PDF Documents
Manufacturer
