Does the elec-TRON system replace manual damping adjustment entirely?

Yes. The solenoid valve on each shock handles damping continuously based on real-time inputs from the DCU. There is no adjuster knob to turn. You select a damping map via the rotary switch and the system manages everything from there, making adjustments 200 times per second based on what the car is actually doing.

Does the FAL affect the suspension tune or the elec-TRON system in any way?

No. The lift operates independently of both the damper setup and the DCU. It does not affect spring rates, valving, or ride height when not in use. Once the front axle comes back down the car behaves exactly as it would without the FAL fitted.

How does the elec-TRON calibration differ between the i4 and the V6?

The active damping architecture is the same across both. What differs is the underlying calibration; spring rates, damping characteristics, and valve settings are all developed around the i4's specific geometry, weight distribution, and suspension travel rather than carried over from the V6 application.

Nitron elec-TRON R1 FastRoad Coilover Kit w/ Standalone FAL for 131 Lotus Emira i4

The Nitron elec-TRON R1 FastRoad Coilover Kit with Standalone Front Axle Lift for the Type 131 Lotus Emira i4 is the most complete version of the R1 FastRoad package. The foundation is four hand-built, inverted dampers with road-biased spring rates and sports valving engineered specifically around the Emira i4’s geometry, weight distribution, and suspension travel. The elec-TRON system adds a proprietary proportional solenoid valve to each shock, with the included DCU monitoring g-load, vehicle speed, road conditions, and driver inputs simultaneously and making independent damping adjustments at every corner every 5 milliseconds; 20 to 30 times faster than a human blink. The Standalone FAL handles the practical side, delivering 25mm of front axle lift in under 3 seconds so steep driveways, speed bumps, and parking ramps stop requiring a second thought. None of it affects the suspension tune or how the car behaves once you are back on road or circuit. Titanium and hard-anodised components resist corrosion, the kit ships with bearing spacers preset and ready to fit, and the whole thing is fully serviceable and upgradeable to ClubSport or custom specifications.

elec-TRON

The elec-TRON R1 FastRoad for the Type 131 Lotus Emira i4 includes Nitron’s DCU as part of the kit. Each shock carries its own proprietary proportional solenoid valve, giving the DCU precise, independent damping control at every corner simultaneously. The system monitors g-load, vehicle speed, road conditions, and driver inputs all at once, making damping adjustments every 5 milliseconds. For reference, a human eye blink takes somewhere between 100 and 150 milliseconds. The suspension is reacting to what the road and the driver are doing in real time, not catching up after the fact.

Standalone Electronic Damping System

The Nitron DCU is included with the elec-TRON R1 FastRoad with Standalone FAL for the Type 131 Emira i4. It’s the brain behind the elec-TRON system, transforming a conventional passive damper setup into a precision semiactive 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 comfort 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 Type 131 Lotus Emira i4 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

Unique Technology

Nitron builds every shock around precision components that go through a thorough design and development process long before final assembly. The modular construction gives engineers the room to develop each application properly on its own terms, without cutting corners on part quality or how components work together under load. Everything is machined to tight tolerances and inspected individually by trained technicians; quality control isn’t a final step here, it runs through the entire process. New materials, finishes, and processes are validated extensively before they’re brought into production, with proprietary Nitron technologies woven throughout to produce shocks that hold up against the competition on both road and track. That level of engineering discipline is what the brand has been built on.

Bespoke Engineering

Nitron doesn’t start with a generic damper and work backward from there. Every application is developed from the ground up, with components, spring rates, and damping characteristics determined by the specific platform rather than borrowed from something adjacent. The geometry, weight distribution, and suspension travel of the Type 131 Lotus Emira i4 shape the design from the start, not as corrections added later. That’s what separates a kit engineered for this car from one that was simply made to fit it.

Features

Shares core technology with the R3 kit
No manual damping adjustments are required, fully controlled by the solenoid valve
Internal reservoir type
Full alloy body
Preload adjuster
Nitrogen gas charged
Nitron FAL raises 25mm at the shock
Precision bearing spacers supplied as required
Consists of 4 coilovers, adjustable top mounts, DCU kit, and FAL kit
DCU kit contains DCU, harness, switch
FAL kit contains all components (cylinders, hydraulic lines, pump, wiring loom and controller)
Hand made to order

Specifications

Coilover Type: elec-TRON R1 FastRoad with standalone FAL
Mounting Brackets: Not required
Recommended Spring Rates:
- Front: 400lbs/inch (70N/mm)
- Rear: 650lbs/inch (114N/mm)

Applications

Lotus Emira i4: 131 | 2022-present | AMG M139 2.0L I4 turbocharged

Other Suspension Kits for Lotus Emira i4

Notes

The Nitron elec-TRON DCU is included 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

Does the elec-TRON system replace manual damping adjustment entirely? Yes. The solenoid valve on each shock handles damping continuously based on real-time inputs from the DCU. There is no adjuster knob to turn. You select a damping map via the rotary switch and the system manages everything from there, making adjustments 200 times per second based on what the car is actually doing.
Does the FAL affect the suspension tune or the elec-TRON system in any way? No. The lift operates independently of both the damper setup and the DCU. It does not affect spring rates, valving, or ride height when not in use. Once the front axle comes back down the car behaves exactly as it would without the FAL fitted.
How does the elec-TRON calibration differ between the i4 and the V6? The active damping architecture is the same across both. What differs is the underlying calibration; spring rates, damping characteristics, and valve settings are all developed around the i4’s specific geometry, weight distribution, and suspension travel rather than carried over from the V6 application.

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 R1 FastRoad Coilover Kit w/ Standalone FAL for 131 Lotus Emira i4 [NTCLO032_EFR+FAL]

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