ARIEL Motor Company, the UK high-performance manufacturer of ultra-lightweight road, track, and off-road vehicles, has launched its newest and most powerful model to date - the track-oriented Ariel Atom 4RR.

Developed to celebrate 25 years of the Ariel Atom, the bespoke, built to order 4RR is fully circuit-optimised, yet road-legal.

It has a motorsportâspec engine producing 525bhp and revving to 8,200rpm making the new model the quickest Atom ever, capable of 0-62mph in 2.4 seconds, powering on to 100mph in just 5.1 seconds.

Despite its focus on ultimate circuit performance, the 4RR remains a roadâlegal vehicle, engineered with the same simplicity, innovation, and mechanical set up that has defined the Atom since its launch in 2000.

Each Atom 4RR will be uniquely specified and entirely built-to-order with buyers invited to Ariel's Crewkerne factory to specify and discuss their perfect Atom with the engineers and technicians responsible for constructing their car.

At the heart of the Atom 4RR sits a completely bespoke engine, hand-built over 100 hours.

While its heart lies in the robust and reliable 2.0L four-cylinder Honda K20C Type R unit, almost every significant internal and external component is replaced, upgraded or reâengineered to motorsport specification.

The result is a unique, oneâoff, competitionâgrade engine producing 525bhp with immense torque, razorâsharp response, and the precision expected of a true track machine.

The 4RR's chassis is a fully bronzeâwelded, motorsportâoptimised structure offering significantly increased strength over previous Atom generations. To complement this, the car features fully adjustable twin tube Ohlins dampers, adjustable for compression and rebound, machined aluminium uprights, aerofoil section adjustable chromoly wishbones and pushrods. The full adjustability allows owners to set up the 4RR for different circuits and to suit their individual driving style.

Braking performance comes from new AP Racing 310mm two-piece ventilated discs - the largest that can fit within the Atom's wheel set - paired with AP unequal-size, four piston motorsport calipers and raceâspec pads.

Cockpit adjustable motorsport ABS features 11 stage adjustment as well as an OFF position, all selectable while driving. The braking system gives the 4RR phenomenal braking ability while maintaining consistency, heat management and pedal feel over repeated hard laps in all weather conditions.

The cockpit of the 4RR features a motorsportâinspired, scrollable TFT display providing lap timing, performance and delta metrics, plus essential race-focused vehicle information.

Henry SiebertâSaunders - managing director, Ariel Motor Company, said"The Atom 4RR is the most uncompromising car we've ever created. Every component, every weld, and every element of its engineering is focused on delivering ultimate track performance at the highest level. Its performance capability demands respect while rewarding drivers with an intensity and precision that few other cars can match."

The Ariel Atom 4RR is priced from £208,000 plus taxes and is available strictly to order in extremely limited numbers.