BILSTEIN is the 1.choice for Germany`s first class car constructors like Mercedes-Benz, Porsche, BMW and Audi for their production. That should give you confidence and faith for buying your own spare parts.
B4 dampers are also first class quality with market-leading technology and that means also save and comfortable for your car.
Beside this: New B4 shock absorbers are not "tougher" or "too tough" compare to yours. You feel a tougher driveability just because the interchange from old to new dampers. Old dampers let your car bob up and down and swing. B4 dampers make sure that your chassis gets the power of damping like a new car.