The BMW X5 M is already a monster of an SUV with 575 horsepower, but tuners still feel the need to extract even more muscle from the biturbo 4.4-liter V8 engine. G-Power launched an upgrade kit back in October last year which dialed the engine to a massive 700 hp (514 kW). Now, the tuners are back to up the power ante to no less than 750 hp (551 kW) and an earth-moving 723 lb-ft (980 Nm) of torque. Compared to a standard X5 M, G-Power’s version has an additional 175 hp (129 kW) and 170 lb-ft (230 Nm.)

For such a large vehicle that weighs 2,350 kg (5,180 lbs), a top speed in excess of 186 mph (300 kph) is downright impressive. BMW’s high-performance SAV will be able to reach that velocity only after G-Power will install its stage 3 kit priced at €4,400 ($4,900) and will remove the stock 155-mph electronic top speed limiter for an extra €668 ($743.)

If you’re wondering where that added oomph comes from, it’s from the upgraded turbochargers, some software wizardry, and a bespoke exhaust system made from titanium which is 23 kg (50 lbs) lighter than the stock one. The BMW X5 M is certainly not the type of vehicle you see often on a drag strip, but G-Power says the tuned version with the stage 3 kit installed will run the quarter mile in 11.5 seconds.

Besides infusing more power in the V8 engine, the tuners have other upgrades available. These include a set of massive 23-inch forged wheels with matching tires from €8,442 ($9,385), a coilover suspension for €2,292 ($2,548), and custom downpipes with catalysts for those willing to spend an extra €3,190 ($3,546.)

These aftermarket goodies are not exactly cheap, but then again neither is the X5 M which kicks off at almost $100,000 in United States and costs just shy of €115,000 in Germany.

Source: G-Power

Gallery: G-Power BMW X5 M

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G-POWER X5 M (F85) with up to 750 hp: The Power SUV hits an all time high

The second generation BMW X5 M is an outstanding representative of the Power-SUV class, its 575 hp and 650 Nm of torque giving it performance that is the envy of its rivals.

However, this is just the starting point, and as BMW M tuning experts
G-POWER have shown, the twin-turbo V8 still has significant potential waiting to be unlocked. With 35 years of engineering experience behind them, G-POWER now offers a three-stage performance upgrade programme for the X5 M, taking power to 650 hp, 700 hp and 750 hp.

Key Facts: G-POWER X5 M (F85)


  • 750 hp / 551 kW at 6,500rpm (+175 hp / 129 kW)
  • 980 Nm from 3000-4500 rpm (+230 Nm)
  • Vmax: >300 km/h
  • Standing 1/4-mile: 11.5 sec.
  • G-POWER Bi-Tronik 2 V3 remap: 4,400.- euro
  • Vmax upgrade: 668.- euro
  • G-POWER supercharger modification: 3,850.- euro
  • G-POWER downpipes with catalysts: 3,190.- euro
  • G-POWER titanium exhaust system including 4x 100 mm Carbon- titanium tailpipes: 5,560.- euro
  • G-POWER GX5M-RS coilover suspension: 2,292.- euro
  • 23-inch HURRICANE RR forged wheels including tyres: from 8,442.- euro

(All prices are net.)

With Stage 1, G-POWER raises output to 650 hp through a software remap. Uniquely, this is achievable either with the G-POWER Bi-Tronik 5 V1 power module or the Bi-Tronik 2 V1-remap. While the engine dyno records an additional 75 hp and 100 Nm of torque for both, each approach has its specific advantage.

The Bi-Tronik 5 is a Plug-and Play solution, and therefore imminently suitable for overseas clients. Conversely, as it allows individual programming of the ECU map to a specific vehicle the Bi-Tronik 2 appeals to drivers who require a customised solution.

The Stage 2 conversion uses G-POWER’s Bi-Tronik 5 V2 or Bi-Tronik 2 V2 software remap. But first, specially fabricated, flow-optimised stainless steel downpipes are fitted to reduce backpressure in the OEM exhaust system. The software upgrade is calibrated around this to obtain 700 hp with 905 Nm of torque.

Stage 3 generates 175 hp over stock, making for an incredible 750 hp. As the OE turbochargers are on the limit of their flow capability, G-POWER re-engineers them with larger turbine and compressor wheels that spin within machined and gas-flowed housings.

These uprated turbochargers work hand-in-hand with the stainless steel downpipes and a bespoke titanium exhaust system, which features two rear silencers and four 100 mm diameter tailpipes. Apart from further reducing backpressure and endowing the X5 M with a deeper more powerful soundtrack, this titanium exhaust system also saves a significant 23 kg.

The 750 hp with 980 Nm of torque is the result of optimisation using the bespoke Bi-Tronik 2 V3 software upgrade calibrated to the new hardware.  Against the stopwatch the big X5 M now blasts through the standing quarter mile in a junior league supercar time of 11.5 sec, on its way to a Vmax of over 300km/h.

To match the X5 M’s chassis to the uprated performance, G-POWER fit their GX5M-RS coilover suspension. The conversion is rounded off by a set of 11.0x23-inch HURRICANE RR forged alloy wheels shod with 325/25ZR23 tyres. Made from the highest quality aircraft-grade aluminium, these wheels are not only immensely strong but also amongst the lightest in their class.