A Polish tuner has taken the wraps off its modified BMW X5 M, which bests even the new Lamborghini Urus in the power stakes.

Dubbed the X5 M Avalanche, the high-powered SUV is based on the outgoing version of the Munich-based brand’s X5 (the fourth-generation model was unveiled back in June, although an M-badged version has yet to be revealed).

But the folks over at Auto-Dynamics have tinkered with the F85-generation's 4,4-litre V8 to the point that it now generates a whopping 500 kW and 880 N.m, up from the stock 423 kW and 750 N.m. Of course, these peak outputs also surpass those of the Urus, which employs the Volkswagen Group’s familiar 4,0-litre V8, in this instance churning out 478 kW and 850 N.m.

How exactly has the Poland-based tuner extracted this extra oomph from the X5 M? Well, the firm has performed the obligatory ECU tune, as well as installed an Akrapovič titanium exhaust system and updated air filters. The result is a claimed 0-100 km/h time of 3,5 seconds, seven-tenths quicker than stock (and one-tenth faster than the Lamborghini).

Auto-Dynamics has also slapped on 22-inch alloys wrapped in Continental SportContact 6 rubber (295/30/R22 up front and 335/25/R22 at the rear) and fitted a suspension lowering kit to provide added stance.