The Germans at G-Power have released their first take on the second generation BMW Z4 E89 hardtop-roadster. The tuning firm's performance package for the new Z4 includes a power kit for the sDrive 35i's 3.0-liter twin-turbocharged inline six engine along with suspension and wheel/tire upgrades. We suspect that it won't be long before G-Power unleashes a 400HP+ beast based on the Z4 but until then, let's see in detail what the company has prepared for the German roadster starting off with the engine kit. The Z4 sDrive 35i's twin-turbocharged inline six benefits from the BI-TRONIK performance module that that pushes the factory engine's output from a standard 306HP and 400Nm (295-lbs/ft) of torque to a more satisfying 345HP and 480Nm (354-lbs/ft) of torque. G-Power claims that with this kit, the 345HP Z4 Roadster can accelerate from 0 to 100km/h (62mph) in 4.7 seconds, or half a second faster than the factory model.
G-Power's offerings also include a new coil-over suspension and a more sonorous stainless steel sport rear muffler with four tail pipes. While the tuning firm has not released any type of aero parts (yet), Z4 owners can equip their car with a new set of 20-inch lightweight alloy wheels wrapped in Michelin Pilot Sport rubber (255/30 ZR 20 up front and 295/25 ZR 20 at the rear).
And now for the prices. The cost for the 20 inch alloy wheels along with the Michelin tires is €4,474 while the coil-over suspension is €1,256 and the rear muffler, €1,508. As for the engine kit, prices have been set at €1,978 but unless you know your way around the engine bay, you'll have to pay another €403 to get it installed.
