The X1 xDrive20d by Hartge boasts 32 hp more than the standard X1 which enables it to sprint from 0 to 100 km/h in 7.2 seconds instead of 8.4 and increases the top speed by 11 km/h. For the sDrive20d the sprint goes in 6.9 seconds instead of 8.1 and the top speed rises to 229km/h.

The 4-cylinder already had a lot of torque available but thanks to the modifications from Hartge it rises from 350 to 415 Nm at 2000 rpm.

A suspension upgrade is also available, lowering the car by 30mm, for all xDrive models from 18d to 28i.

The Hartge classic 2 wheel for the X1 is also a beauty with the following dimensions: 9 x 20′ offset 33 with 245/30 ZR 20 at the front and 10 x 20′ offset 40 with 295/25 ZR 20 at the rear. Hartge recommends ContiSC-5, Pirelli Nero or the Michelin PS2 tyres.

The BMW Z4 E89 is already a great looking car but Hartge think they can do better with their new aerodynamic kit program.

The kit basicly includes only a new front spoiler and a hood lid lip which are supposed to offer increased downforce on both axles of the car.

New rimms are also fitted.