Nitron NTR-R3 Coilover Kit for 960 Alfa Romeo 4C

The Alfa Romeo 4C has the chassis balance to be genuinely fast on track, but extracting that potential depends heavily on having suspension that can be tuned with precision rather than approximated. The Nitron NTR-R3 coilover kit is built for exactly that; independent 3-way damping adjustment with separate high and low speed compression control gives drivers and engineers the range needed to dial the car in properly across different circuits and conditions. A large diameter piston and ultra-strong piston rod sit at the core of the design, delivering the damping control and feedback that serious setups demand. The front units run piggyback reservoirs while the rears use remote hose mounted reservoirs, keeping high and low speed compression adjustment accessible at both ends without complicating the installation. The R3 is a proven race winner with lap records across a wide range of international motorsport formulas, and every kit is custom built, custom sprung, and fully serviceable. Hard-anodised titanium finish parts and high-grade materials handle corrosion resistance and weight reduction, so the dampers hold up season after season without compromising performance.

Unique Technology

• Nitron builds every shock from precision components that go through a rigorous design and development process well before final assembly begins. The modular construction gives engineers the flexibility to develop each application on its own terms without cutting corners on part quality or how components interact under load. Everything is machined to tight tolerances and inspected individually by trained technicians; that level of quality control runs through every stage of production. New materials, finishes, and processes are validated extensively before they’re brought in, with proprietary Nitron technologies integrated throughout to produce shocks that hold up against the competition on both road and track. That engineering standard is what 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

Specialized Bi-Axis Hose Fittings

• Nitron R3 Hose shocks use Nitron’s own 720 degree Bi-Axis fittings exclusively, a proprietary design that allows for straightforward, precise installation without the fitment compromises that come with conventional end fittings.

Bespoke Engineering

• Nitron doesn’t adapt a generic damper to fit a car; they engineer one around it. Every application goes through a dedicated development process where components, spring rates, and damping characteristics are determined by the specific platform, not carried over from something close enough. The geometry, weight distribution, and suspension travel of the vehicle are built into the design from the beginning. That’s the difference between suspension that works with a car and suspension that was developed for it.

Features

• Piggyback & hose reservoir types
• 16 clicks of high compression
• 26 clicks of low compression
• 24 clicks of rebound
• Preload adjuster
• 3-way independent adjustment
• Full alloy body
• Consists of 4 coilovers, reservoirs, hoses, and top mounts
• Hand made to order

Specifications

• Coilover Type: NTR-R3
• Adjustment Type: 3-way independent
• Adjustment: 16 clicks of high compression / 26 clicks of low compression / 24 clicks of rebound
• Reservoir Type:
  • Front: Piggyback
  • Rear: Hose
• 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-R1 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 is the difference between the NTR-R3 and NTR-R1 coilover kits for the Alfa Romeo 4C? The NTR-R3 uses independent 3-way damping adjustment, giving separate control over high speed compression, low speed compression, and rebound. The NTR-R1 uses combined 2-way adjustment, where bump and rebound are controlled together through a single adjuster. The R3 is the race-focused option for drivers and engineers who need precise, independent control over each damping parameter; the R1 is the more straightforward setup suited to road use and track days where that level of granularity isn’t required.
• What spring rate options are available for the Alfa Romeo 4C NTR-R3 kit? Two specs are recommended by Nitron and offered as standard options. 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. Custom spring rates are also available; contact us directly for a consultation.
• Are droplinks included with the kit? No, droplinks are not included. The kit consists of four coilovers, reservoirs, hoses, and top mounts covering front and rear.
• 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.