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German tuner G-Power has turned its attention to the G83 BMW M4 Convertible, delivering a drop-top version of its formidable G4M Bi-Turbo package. Known for their restrained yet potent approach to upgrades since the 1980s, G-Power has once again found the sweet spot between subtle refinement and outright supercar performance.
The standard M4’s 3.0-litre twin-turbo inline-six has been remapped to unleash 700hp, a significant jump from its stock output. Torque is equally monstrous, pushing the convertible into performance territory usually reserved for far more exotic machinery. Top speed, depending on configuration, edges past 200mph – a staggering figure for a four-seat cabriolet.
Beyond raw power, the G4M Bi-Turbo brings with it a stainless-steel exhaust with carbon-fibre tailpipes, forged 20- or 21-inch wheels wrapped in Michelin tyres, and a Venturi bonnet that sharpens the profile. A carbon rear wing and other aerodynamic tweaks hint at the potency beneath, while the interior is finished with swathes of carbon fibre and the option of a motorsport-inspired LED steering wheel.
As ever with G-Power, the details matter. The orange-accented engine bay, bespoke badging and discreet logos make it unmistakably theirs, without overwhelming the elegant silhouette of the M4 Convertible. Customers can choose between exposed or painted carbon panels, tailoring the look from understated aggression to full showpiece.
The result is a BMW M4 Convertible that balances drop-top cruising with serious performance credentials. With 700hp on tap and G-Power’s engineering touch, the G83 is transformed into a convertible that commands attention for all the right reasons – not just its speed, but its execution.
