MTS Technik sport springs MTS Technik sport springs are available in a wide range of lowerings - from 15mm to as much as 80mm. Our comprehensive offer is addressed to both fans of low-suspension, stiff vehicles and lovers of subtle tuning who want to slightly lower them to gain a slight stiffening and a more individual character of the car. If you decide to lower it to 40mm, you do not need to replace the shock absorbers with sports ones. For higher values, the complete MTS Technik lowering kit is the optimal solution Fits: BMW Z4 Roadster / E85 2.2i / 2.5i / 2.5si / 3.0i / 3.0si 2003 - 04/09 BMW Z4 Coupe / E86 3.0si 2003 - 04/09 front / rear: 30/30 mm