4WR
The MCS 4WR is a four way adjustable remote reservoir damper developed for the most demanding professional and competition level applications. Independent high speed and low speed compression and rebound adjustment provides complete authority over damper behavior across all operating conditions.
At this level, marginal gains matter. The 4WR allows precise separation of platform control, impact compliance, and wheel management, enabling the car to remain composed under extreme loads while maximizing grip and consistency. The remote reservoir architecture delivers maximum fluid capacity and thermal stability to ensure repeatable performance over long sessions and race distances.
Engineered as a no compromise solution, the 4WR supports the highest level of vehicle development where fine tuning, data driven decisions, and driver feedback converge.
Total control.
Technical Features
The MCS 4WR uses a remote reservoir architecture that fully separates compression and rebound control into independent high speed and low speed circuits. This design allows each damping phase to be tuned individually, giving complete control over platform behavior, impact response, and wheel management across the full range of damper velocities.
High and low speed compression adjustment manages chassis support and compliance, while high and low speed rebound adjustment governs spring control, stability, and how the car settles between inputs. Increased fluid capacity and optimized gas management maintain thermal stability and consistent performance during extended sessions and high load operation, making the 4WR a no compromise damper for the most demanding competition environments.
18 Clicks of High Speed Compression Adjustment
Compression adjustment allows the driver to progressively add platform support, improving use of the tire’s mechanical contact patch as grip and speed increase. This results in better control under braking, improved mid corner stability, and more consistent lap times.
Compression damping forces are managed by a large blow off valve located directly on the reservoir piston. This approach delivers precise, repeatable control across the full adjustment range and avoids the narrow effective window common to needle valve systems, where changes quickly lose influence as flow increases.Rebound adjustment allows the driver to progressively increase spring control and fine tune overall chassis balance as grip, speed, and commitment rise. Proper rebound control improves how the car settles after inputs, maintains tire contact through transitions, and delivers consistent behavior corner to corner.
10 Clicks of Low Speed Compression Adjustment
With 10 clicks of low speed compression control, the user can easily manipulate the pitch and roll of the vehicle in low speed shaft movements (0-4 inches per second in velocity). This helps to control how quickly a tire or axle loads.Low speed compression damping forces are controlled through orifices located directly within the piston assembly in the remote reservoir head and allow for precise hydraulic control of damper oil.Low speed compression adjustment allows the driver to directly influence vehicle pitch and roll during low velocity damper movements, typically in the 0 to 4 inches per second range. This control is critical for tuning braking stability, corner entry response, and mid corner balance.
Low speed compression damping forces are regulated through precision orifices located in the compression piston assembly within the reservoir head. This architecture provides consistent, repeatable adjustment with clear response per click, enabling fine control of chassis behavior without compromising compliance.
18 Clicks of High Speed Rebound Adjustment
Rebound adjustment allows the driver to progressively increase spring control and fine tune overall chassis balance as grip, speed, and commitment rise. Proper rebound control improves how the car settles after inputs, maintains tire contact through transitions, and delivers consistent behavior corner to corner.
Rebound damping forces are regulated through precisely sized orifices at the main piston assembly within the damper body. This hydraulic architecture provides a wide, usable operating range with consistent response per click, reduces the need for frequent revalving, and maintains repeatable damping performance over extended use without degradation.
10 Clicks of Low Speed Rebound Adjustment
Low speed rebound adjustment allows precise control of chassis pitch and roll during low velocity rebound events, typically in the 0 to 4 inches per second range. This adjustment governs how quickly a tire or axle unloads after compression, directly influencing balance, traction, and stability during corner exit and transitions.
Low speed rebound damping forces are regulated through precision orifices located at the main piston assembly within the damper body. This hydraulic architecture delivers consistent response per click and enables fine, repeatable control of rebound behavior without sacrificing predictability or durability.
Gas Pressure Adjustment
Each remote reservoir is equipped with a Schrader valve, allowing direct adjustment of the nitrogen gas pressure. This adds a powerful tuning tool that lets the driver increase or decrease overall damper support without changing valving.
Reservoir pressure is adjustable from 100 to 275 PSI, providing flexibility to support higher cornering loads in high grip conditions or to allow increased weight transfer when maximizing traction on lower grip surfaces. This adjustment expands the usable operating window and allows the damper to be tuned as vehicle demands and driving style evolve.
<0.5%
Thousands of systems in service worldwide with less than a half percent reported failure rate. Built for reliability first, because confidence starts with consistency.
3.5x
Up to 3.5 times the service life of typical aftermarket coilover systems, delivering more miles, more track time, and fewer rebuild cycles.
0.3 sec
Per corner, per lap. Typical gain versus competing motorsport damper systems, measured in corner segments. Bigger gains when upgrading from entry level aftermarket suspension.
Technical Specifications
These specifications highlight the internal architecture, adjustment mechanisms, and core components that define damper performance, durability, and tuning range.
44 mm large-diameter main piston with linear-to-progressive force curve
Precisely Sized and Matched Orifices Regulate Oil Flow for Predictable Damping and a Broad, Usable Adjustment Range
Large reservoir increases oil and gas volume, stabilizing internal pressure and reducing pressure rise through the stroke.
Oversized blow-off valves engineered to deliver consistent damping control under high shaft speeds and extreme thermal loads.
Precision CNC-Machined Components with Lot Control and Serialization
Schrader valve allows precise gas pressure adjustment to increase or decrease overall support.
Shaft Guide Provides Lateral Support at the Upper End of the Damper Body
Support Piston Provides Lateral Support at the Piston End of the Shaft Assembly
Swivel hose fittings designed to eliminate hose binding, reduce leak risk, and simplify installation.
Shaft-End Adjustment with Positive Mechanical Detents, 10 Low Speed Rebound and 18 High Speed Rebound Positions
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