The engine has been mapped by Ariel using an ECU developed specifically for the car and optional launch and traction control are now included, derived from the Atom V8. The Atom 4 is also able to adjust and optimise turbo boost levels for different road and track conditions.
There is a larger fuel tank than before, giving a road range of 300 miles.
The Atom 4 retains the inboard, pushrod-operated damper system but features all-new suspension geometry, which includes revised inboard and outboard points plus anti-squat and anti-dive intended to reduce unnecessary body roll and weight transfer.
This and the revised steering rack make the Atom accessible for all types of drivers, says Ariel, and there’s the option of a quick rack for track-focused cars.
The model sits on 16in front and 17in rear wheels. Multi-spoke alloy wheels are standard but there is also the option of full carbon wheels for the first time. These are nearly 50% lighter than alloy wheels. The Atom 4 uses high- performance Avon ZZR tyres.
Ariel said: “The combination of new suspension and larger- section Avon tyres contributes to the Atom 4 having more mechanical grip than any previous Atom.” It added that cornering speed moves to “another level”.
There's also a new, larger braking set-up to accommodate the Atom’s extra power.
Ariel has done significant work to the body, with all-new panels improving aerodynamics. The most obvious change is the disappearance of the central Atom roll hoop, now enclosed under the air intake bodywork.The Atom’s ‘aero screen’ now reaches all the way across the car, reducing ‘helmet lift’ and directing air to the engine intake, and with just this aero fence, claims Ariel, generates nominal downforce.