Bilsteins are original equipment on many Porsches and have won, for Porsche, countless races. Bilsteins are the highest quality shocks made and will last the lifetime of your Porsche. Bilstein rallye shocks and struts are specifically set to meet the rigourous demands of driving competition. Their success should be measured by the unprecedented levels of acceptance and use by professional drivers in virtually all major motorsports. Rallye and race units may include such features as spherical bearings, adjustable spring-seats longer or shorter than standard dimentions. They and not suited for street use.

this strut insert fits Porsches with black strut housings (original boge equipt) and is a rallye/sport unit. Sold each, fits left or right side.