The german tuning company Senner, from Ingelheim near Mainz, has developed a special tuning kit for the current Mercedes SLS AMG Roadster.

There is a special coil-over suspension system of variation 3 from KW Automotive for the SLS, which is adjustable in its compression and rebound stage and also has an aluminium housing. Senner replaces the AMG front rims with a set of Schmidt Gotham- aluminium in titanium gray in the dimension 9×20 inches with 255/30R20 and in the rear in 11.5×21 inches with 295/25R21 Hankook S1 Evo-tires.

The stock SLS develops a performance of 571 Hp (420 kW) and a maximum torque of 650 Nm. Senner boosts the power of the AMG top model by 35 Hp (26 kW) and the maximum torque by 40 Nm through a new exhaust system and the installation of a set of high-performance air filters.
The new exhaust system is made of the most sophisticated high grade steel and fitted with a valve control system including a back pressure monitored control system for individual sound volume adaptation with four different modes.

Source: Mercedes