Ariel Celebrates 25 Years of the Atom With Its Most Powerful Model Yet
Built on the proven Atom 4R platform, the new 4RR features a host of internal engine changes, along with revised oil and fuel systems, to maximize performance. Ariel describes it as the ultimate expression of its 'serious fun' philosophy, aimed at drivers who want to push their skills and the Atom's engineering to the absolute limit. Pricing and full technical details will follow later this year.
The new model not only celebrates 25 years of the Atom, but also underlines Ariel's heritage as a company dating back to 1871, when it produced the pioneering Ordinary, or 'Penny Farthing,' bicycle, the world's first series-production vehicle.
As Ariel writes a new chapter with the Atom 4RR, here's a look back at the evolution of one of Britain's most radical sports cars:
Launched at the turn of the millennium, the original Atom shocked the performance-car world. With a 120bhp Rover engine and Ariel's now-iconic exposed tubular space frame, it embodied an entirely fresh vision: extreme lightness, ultra-minimalist design, and a thrilling, highly configurable driving experience.
The 'No Doors, No Windscreen, No Roof' ethos made the Atom a true driver's machine and helped cement its legend among purists.
The second-generation Atom switched to Honda power, adopting the high-revving 220bhp Civic Type R K20 engine.
From 2005, Ariel offered an optional supercharger pushing power to 275bhp, adding another level of performance, and introducing that unforgettable supercharger whine. Engineering and design updates further refined what was already a visceral driving experience.
The Atom 3 brought a significant overhaul. A revised chassis, upgraded suspension, and updated bodywork made the car even more capable. Standard output rose to 245bhp, while a supercharged option lifted power to 300bhp. In 2010, Ariel built a very special edition: the Atom V8. This 25-car limited run boasted up to 500bhp and a spine-tingling 10,000rpm redline, taking the Atom philosophy to the extreme.
Refining the Atom 3 platform, the Atom 3.5 improved engine management, steering, suspension, and bodywork, while retaining the same fundamental chassis. A year later, the even more hardcore 3.5R arrived with 367bhp, a sequential gearbox, and further suspension upgrades, cementing the Atom's place as a benchmark for raw, lightweight performance.
Every part of the Atom was reimagined for the Atom 4, apart from the fuel filler cap, steering wheel, and pedals. As the first turbocharged Atom, it utilized a 2.0-liter Honda Civic Type R engine, producing 320bhp with switchable boost, and was backed by a stiffer chassis, advanced geometry, and adjustable driver aids, including traction control and launch control.
With a stunning power-to-weight ratio and exceptional handling, the Atom 4 raised the bar for lightweight, road- and track-oriented sports cars.
In 2023, Ariel further advanced the Atom 4 platform with the introduction of the 4R. This time, the same Honda turbo engine was tuned to 400bhp and 500Nm, resulting in the 4R achieving an extraordinary power-to-weight ratio of nearly 600bhp per tonne.
Designed for the most dedicated drivers, the Atom 4R delivered electrifying track performance while remaining road-legal.
As Ariel gears up to celebrate the Atom's 25th birthday, the 525bhp Atom 4RR stands as a fitting tribute to a quarter-century of engineering passion, fearless innovation, and that uniquely analog driving experience. With just 25 bespoke cars to be built, the 4RR will be among the rarest and most potent Ariels ever made.
For those lucky enough to secure one, it promises a driving experience unlike anything else on the road or the track.
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