Nitron NTR-R1 Coilover Kit for 960 Alfa Romeo 4C

The Alfa Romeo 4C has the chassis to be a genuine performance car, but the stock suspension limits what it can actually do when the road gets serious or a track day enters the picture. The Nitron NTR-R1 coilover kit closes that gap with precision-engineered, combined 2-way damping adjustment drawn directly from the R3 race platform, sharing core components with a kit built for professional competition. There’s no remote canister to work around, and every unit is individually hand-built with ultra-low friction components that deliver consistent, fade-resistant damping from the street to the circuit. Hard-anodised titanium finish parts and high-grade materials cut corrosion and unnecessary weight, and with each kit custom built, custom sprung, and fully serviceable, the investment holds up well past a single season.

Unique Technology

• Every Nitron shock starts with precision components that have been through a thorough design and development process before they reach final assembly. The modular construction gives engineers the flexibility to tailor each application properly, without compromising how individual parts are made or how they perform together. Components are machined to tight tolerances and inspected one by one by trained technicians as part of a strict quality control process. New materials, finishes, and processes go through extensive validation before adoption, with Nitron-specific technologies integrated to produce shocks that genuinely outlast and outperform competing options on the road and track. That standard of engineering is what Nitron’s reputation is built on.
  • 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 pull a generic damper off a shelf and adjust the valving to fit. Every application goes through a dedicated development process, with components, spring rates, and damping characteristics engineered specifically for the platform in question. That means the geometry, weight distribution, and suspension travel of a given car are factored into the design from the start, not compensated for after the fact. It’s the difference between a kit built for your car and a kit built for a category of cars your vehicle happens to fall into.

Features

• Internal reservoir type
• 2-way combined adjustment
• Full alloy body
• Preload adjuster
• Combined 24 clicks of adjustment
• Nitrogen gas charged
• Precision bearing spacers supplied as required
• Consists of 4 coilovers and top mounts
• Hand made to order

Specifications

• Coilover Type: NTR-R1
• Adjustment Type: 2-way combined
• Adjustment: 24 clicks combined
• Rear Suspension Type: OEM
• Droplinks Included: No
• Recommended Spring Rates:
  • FRS – Fast Road Spec:
    • Front: 300lbs/inch (53N/mm)
    • Rear: 400lbs/inch (70N/mm)
  • TDS – Track Day Spec:
    • Front: 375lbs/inch (66N/mm)
    • Rear: 456lbs/inch (80N/mm)

Applications

• Alfa Romeo 4C: 960 | 2014-2020

Other Suspension Kits for the Alfa Romeo 4C

• NTR-R3 Coilover Kit

Notes

• 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.
• Precision bearing spacers supplied as required

Frequently Asked Questions

• What spring rate options are available for the Alfa Romeo 4C NTR-R1 kit? Two specs are recommended directly by Nitron and are offered as options, while custom spring rates can be requested. The Fast Road Spec runs 300lbs/inch (53N/mm) front and 400lbs/inch (70N/mm) rear. The Track Day Spec steps up to 375lbs/inch (66N/mm) front and 456lbs/inch (80N/mm) rear. The right choice depends on how the car is used; the Track Day Spec is the better fit if circuit work is a regular part of the picture.
• How does the 2-way combined damping adjustment work? The NTR-R1 uses a single adjuster controlling both bump and rebound together across 24 clicks of combined adjustment. This keeps setup simple without sacrificing the ability to meaningfully tune the damping character for different road conditions or track surfaces.
• Are droplinks included with the kit? No, droplinks are not included. The kit consists of four coilovers and top mounts covering front and rear, with precision bearing spacers supplied as required.
• Is the Nitron NTR-R1 serviceable after purchase? Yes. Every NTR-R1 kit is fully serviceable. Nitron hand-builds each unit to order, and the design supports long-term maintenance rather than requiring full replacement when performance eventually needs refreshing.

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.