What does the elec-TRON R3 with FAL offer over the elec-TRON R1 with FAL on the GR Supra?

The elec-TRON R1 relies entirely on the solenoid valve for damping control. The Nitron elec-TRON R3 coilover with FAL adds independent manual high and low speed compression adjustment on top of the electronic control, so engineers can set a fixed mechanical baseline while the DCU continues to adjust damping in real time within that range. For a GR Supra being developed seriously for track use, that additional layer of control is what separates the R3 from the R1.

How does the manual compression adjustment work alongside the electronic damping on the elec-TRON R3?

The two circuits operate independently without interfering with each other. The manual high and low speed compression adjusters set the mechanical baseline of the damping setup, and the Nitron DCU manages the solenoid valve continuously within that range in real time. The driver sets the overall character through the manual adjusters and the active damping map; the electronic system handles everything else from there.

Does the elec-TRON R3 with FAL require any additional products for the GR Supra?

No. The Nitron DCU is included with the elec-TRON R3 coilover kit with Standalone FAL for the A90 and A91 GR Supra, so no additional controller is required. The kit arrives with everything needed for the electronic damping system and the front axle lift. Custom spring rates are available separately if the application requires them.

How does the FAL interact with the elec-TRON R3 suspension setup when not in use?

The FAL doesn't interact / cross-over with the electronic systems. The Nitron Standalone FAL operates independently of the damper and electronic damping systems. Once the front axle returns to normal ride height after a lift cycle, the elec-TRON R3 coilover continues to operate exactly as it would without the FAL in the circuit. Neither the suspension calibration nor the DCU damping maps are affected by the lift system.

Is the elec-TRON R3 with FAL a viable setup for a GR Supra used on both road and track?

Yes. The Nitron elec-TRON R3 coilover kit with FAL for the A90 and A91 GR Supra is custom sprung to order and includes pre-installed damping maps covering road and track contexts. The real-time damping adjustment handles variation between conditions automatically, the manual compression circuits allow a track-specific base setting to be dialed in, and the FAL makes the lowered ride height practical on public roads without any compromise to the suspension setup.

Nitron elec-TRON R3 Coilover Kit with Standalone FAL for A90 / A91 Toyota GR Supra

The Nitron elec-TRON R3 coilover kit with Standalone FAL for the A90 and A91 Toyota GR Supra is purpose-built for owners who want the control depth of an R3 system alongside electronic damping and the practicality of daily driving a lowered car. Each shock carries Nitron’s proportional solenoid valve alongside an isolated high and low speed manual compression circuit, so the electronic side handles real-time damping response through the included Nitron DCU while the manual compression circuit gives a fixed base setting for track work or road use without the two systems interfering with each other. Front reservoirs are available in either piggyback or hose-mounted configuration; the rears use hose-mounted reservoirs throughout, sitting outside the shock body to keep heat out of the damper oil and giving straightforward access to the adjustment controls without pulling the shocks. The GR Supra runs divorced rear suspension configuration throughout. The included Standalone FAL lifts the front axle 25mm at the shock to clear driveways, speed bumps, and parking obstacles; once the axle drops back down the car behaves exactly as it would without the system in the circuit. Every elec-TRON R3 coilover kit with FAL is custom built to order, custom sprung, and fully serviceable.

elec-TRON

Nitron’s elec-TRON system is built around a proprietary proportional solenoid valve fitted to each shock individually on the A90 and A91 GR Supra, giving the Nitron DCU precise, independent damping control at every corner of the car. G-load, vehicle speed, road conditions, and driver inputs are all monitored simultaneously, with damping adjustments made every 5 milliseconds. A human eye blink takes somewhere between 100 and 150 milliseconds; the elec-TRON system is working at a fraction of that. The suspension is responding to the road and the driver in real time, not reacting after the fact.

Standalone Electronic Damping System

The Nitron DCU is included with the elec-TRON R3 coilover kit with Standalone FAL for the A90 and A91 GR Supra. It’s the brain behind the elec-TRON system, transforming a conventional passive damper setup into a precision semi-active platform. Working in conjunction with Nitron’s elec-TRON valve, the DCU continuously processes data from the car every 5 milliseconds; assessing vehicle attitude, braking forces, cornering loads, and acceleration inputs to determine the correct valve position and damping level at any given moment. The result is a suspension system that isn’t set to a fixed damping rate but is constantly optimizing grip and performance in real time based on what the car is actually doing. The DCU is fitted with an adjustable control knob giving the driver access to a range of pre-installed damping maps; Rain, Tour, Sport, and Race, each tuned for a specific driving context. Damping continues to be adjusted continuously within whichever map is selected, so the driver sets the overall character and the system handles the rest.
- Supplied with a custom or universal wiring harness
- Utilizes Arm Cortex-M4 processor
- Independent control of 4 electronic dampers
- 6 position rotary control switch or visual rotary display and control allows user to access a number of pre-installed damping maps (3 passive / 3 adaptive)
- Two 3 axis accelerometers
- 3 axis gyroscope
- 200Hz damping control rate
- Configured for application location and settings
- Ideal for resto-mod applications
- Fully resin bonded

The Nitron Front Axle Lift (FAL)

Running a lowered A90 or A91 GR Supra on the road comes with a familiar set of frustrations; steep driveways, speed bumps, and parking lot ramps that sit just low enough to make every approach a calculation. The Nitron Standalone Front Axle Lift system is built around that specific problem. With 25mm of lift available at the front axle, it clears the obstacles that lowered ride heights make problematic without requiring any changes to the suspension setup and without affecting how the car performs once you’re back on the road or circuit. It’s a practical addition to a performance suspension package, not a compromise of one.
- 250W pump
- 25mm lift height
- Typical lift time under 3-seconds
- Audible in-cabin warning system
- Switch with built-in warning light
- Auto off function
- Protects your car from damage caused by steep driveways and speed bumps
- Compatible with a wide range of suspension setups

Specialized Bi-Axis Hose Fittings

Nitron R3 hose shocks use Nitron’s own 720-degree Bi-Axis fittings exclusively; a proprietary design that makes for clean, precise installation without the compromises that come with conventional end fittings.

Unique Technology

Nitron starts every shock with precision components that go through a thorough design and development process long before final assembly. The modular construction gives engineers the flexibility to approach each application on its own terms, without compromising part quality or how components perform together under real load. Everything is machined to tight tolerances and inspected individually by trained technicians; that standard of quality control runs through every stage of production, not just the end of it. New materials, finishes, and processes go through extensive validation before they’re adopted, with proprietary Nitron technologies built in throughout to produce shocks that consistently hold up against the competition on road and track. That’s the engineering foundation the brand has been built on since 1998.
- Basic Damper Design:
  1. End Eye / Top Mount
  2. Damper Piston & Shim Stack
  3. Shaft / Rod
  4. Floating / Separator Piston
  5. Suspension Oil
  6. Compressed Nitrogen Gas

Bespoke Engineering

Nitron doesn’t adapt a generic damper to fit the A90 and A91 GR Supra; they engineer one around it. Every application goes through a dedicated development process where components, spring rates, and damping characteristics are shaped by the specific platform, not carried over from something similar enough to work. The geometry, weight distribution, and suspension travel of the chassis are part of the design from day one, not corrections introduced later. That’s the difference between suspension that works with a car and suspension that was purpose-built for it.

Features

Hose or piggyback reservoir type
Divorced rear suspension
No manual damping adjustments are required, fully controlled by the solenoid valve
Preload adjuster
Full alloy body
Nitron FAL raises 25mm at the shock
Consists of 4 coilovers, reservoirs, hoses, adjustable top mounts, and DCU (+FAL kit)
FAL kit contains all components (cylinders, hydraulic lines, pump, wiring loom and controller)
Hand made to order

Specifications

Coilover Type: elec-TRON R3 with standalone FAL
Reservoir Type:
- Front:
  - Hose
  - Piggyback
- Rear: Hose
Rear Suspension Type: Divorced
Droplinks Included: No
Recommended Spring Rates:
- FRS – Fast Road Spec:
  - Front: 343lbs/inch (60N/mm)
  - Rear: 799lbs/inch (140N/mm)
- TDS – Track Day Spec:
  - Front: 457lbs/inch (80N/mm)
  - Rear: 913lbs/inch (160N/mm)

Applications

Toyota GR Supra: A90, A91, MK5 | 2020-2026

Other Suspension Kits for A90 / A91 GR Supra

Notes

Compatible on 2.0L and 3.0L GR Supra models
Nitron DCU is included with kit so no additional products are required
Custom spring rates also available, please contact us directly here for more information or for a consultation on custom rates
Images used for illustration purposes only. Specific details, finishes and end fittings may differ from that shown.

Frequently Asked Questions

What does the elec-TRON R3 with FAL offer over the elec-TRON R1 with FAL on the GR Supra? The elec-TRON R1 relies entirely on the solenoid valve for damping control. The Nitron elec-TRON R3 coilover with FAL adds independent manual high and low speed compression adjustment on top of the electronic control, so engineers can set a fixed mechanical baseline while the DCU continues to adjust damping in real time within that range. For a GR Supra being developed seriously for track use, that additional layer of control is what separates the R3 from the R1.
How does the manual compression adjustment work alongside the electronic damping on the elec-TRON R3? The two circuits operate independently without interfering with each other. The manual high and low speed compression adjusters set the mechanical baseline of the damping setup, and the Nitron DCU manages the solenoid valve continuously within that range in real time. The driver sets the overall character through the manual adjusters and the active damping map; the electronic system handles everything else from there.
Does the elec-TRON R3 with FAL require any additional products for the GR Supra? No. The Nitron DCU is included with the elec-TRON R3 coilover kit with Standalone FAL for the A90 and A91 GR Supra, so no additional controller is required. The kit arrives with everything needed for the electronic damping system and the front axle lift. Custom spring rates are available separately if the application requires them.
How does the FAL interact with the elec-TRON R3 suspension setup when not in use? The FAL doesn’t interact / cross-over with the electronic systems. The Nitron Standalone FAL operates independently of the damper and electronic damping systems. Once the front axle returns to normal ride height after a lift cycle, the elec-TRON R3 coilover continues to operate exactly as it would without the FAL in the circuit. Neither the suspension calibration nor the DCU damping maps are affected by the lift system.
Is the elec-TRON R3 with FAL a viable setup for a GR Supra used on both road and track? Yes. The Nitron elec-TRON R3 coilover kit with FAL for the A90 and A91 GR Supra is custom sprung to order and includes pre-installed damping maps covering road and track contexts. The real-time damping adjustment handles variation between conditions automatically, the manual compression circuits allow a track-specific base setting to be dialed in, and the FAL makes the lowered ride height practical on public roads without any compromise to the suspension setup.

About Nitron Suspension

Nitron Suspension has been at the forefront of precision suspension engineering since 1998, founded by Guy Evans with the goal of building high-performance shocks for enthusiasts and professionals alike. Over 200 dealers now carry Nitron products across Europe, Asia, the US, Australasia, and Africa. In 2008, the company moved into a dedicated facility in the UK’s Motorsport Valley, adding dynamometers, 5-axis CNC machines, and 3D CAD capabilities to support both growing demand and continued product development. A second expansion came in 2023 with a new office in Murrieta, California. The team behind every Nitron product draws from deep backgrounds in machining, materials technology, hydraulics, bike engineering, and F1 racing, with many engineers bringing firsthand experience as competitive drivers and riders. That depth of knowledge across both the technical and competitive sides of motorsport shapes every product Nitron develops.

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Nitron elec-TRON R3 Coilover Kit with Standalone FAL for A90 / A91 Toyota GR Supra [NTCTO013ER3+FAL]

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