LMP3 Racing Clutch Kit SACHS RCS

Description

Manufacturer

Manufacturer: ZF Race Engineering GmbH, Ernst-Sachs-Straße 62, 97424 Schweinfurt, Deutschland, www.zf.com

Product Tags

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 Motorsport Clutch
for LMP3 Gen 2

RCS 4/140 S3.4 - Sintered Metal 3.4 mm

Designed for second-generation LMP3 cars: the four-plate SACHS RCS 4/140 S3.4 from ZF Motorsport uses the compact 140 mm friction diameter for low moment of inertia and short shift windows. This supports rapid rev-matching, precise pit-lane modulation and repeatable launches – perfect for the tight packaging requirements of P3 prototypes.

The 3.4 mm sintered lining hits the technical sweet spot between agility and service life: more heat capacity and wear reserve than 2.6 mm stacks, while enabling faster temperature stabilization and lower rotating mass than 5.2 mm pad designs. The bite point remains stable over long stints and the plates disengage cleanly – ideal for the mix of sprint sections, safety-car phases and frequent pit stops in the LMP3 environment.

The four-plate architecture distributes friction work and temperature across multiple contact surfaces, increasing torque capacity with a slim overall height. A release force of 4,200 N delivers a well-defined pedal feel, while the forged aluminum housing combines high stiffness with a compact envelope. Pressure and intermediate plates made of high-strength steel ensure launch and endurance durability in demanding LMP3 use.

SACHS RCS 4/140 S3.4 – LMP3 Gen 2 – sintered metal 3.4 mm racing clutch

Compatibility

Compatible with LMP3 Gen 2 (from 2020):

Ligier JS P320
Duqueine D08
Ginetta G61-LT-P3
ADESS-03 Evo

Typical powertrain:

Engine: Nissan VK56, 5.6 L V8 (approx. 335 kW / ~455 hp)
Transmission: Xtrac 1152, sequential

Advantages

Light

low clutch height

Low mass and inertia

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.

LMP3 Racing Clutch Kit SACHS RCS - RCS-4-140-LMP3G2

Technology

Technical Data RCS 4/140:

Maximum engine torque [Nm] : 1,925
Release diameter [mm] : 38
Release force [N] : 4,200
Release travel [mm] : 5.0 +0.5
Mass (weight) [kg] : 3.64
Moment of inertia [kgm2] : 0.011585

Clutch Housing

The RCS-140 clutch housing is made of high-strength forged aluminum and is designed for maximum stiffness with minimal installation space. The housing geometry promotes efficient heat dissipation and stabilizes the clutch pack’s temperature window in the LMP3 setup. A wear-resistant hard coating reduces friction and fit wear and increases service life.

Friction Lining

Sintered-metal clutch plates provide high temperature resistance, stable friction levels and fade resistance. The 3.4 mm lining thickness offers a balanced compromise of thermal reserve, durability and low rotating mass – optimal for frequent load changes, defined launches and short slip phases in the pit lane.

Hub Profile

The RCS 4/140 S3.4 is supplied with a matching hub spline for the respective gearbox input shaft in the LMP3 powertrain. High fit accuracy ensures reliable torque transmission and durability.

Scope of Supply

RCS 140 clutch housing (HA140), aluminum

1x RCS 140 pressure plate (PP140), steel

3x RCS 140 intermediate plate (IP140), steel

4x RCS 140 clutch disc, sintered 3.4

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.