Koni Sport aka Yellow set for the E90 Chassis BMW 3-series, including the 335d model.
Koni Sport (Yellow) is a low pressure gas and twin tube hydraulic damper. They are the best performing shock and handling damper set by Koni.
Unlike most other Koni dampers, the front struts are externally adjustable when installed and the rears can be adjusted for rebound damping before installation.
Koni Sports have a reputation as being among the best performance dampers on the market, while their adjustability allows you to tailor your car's handling and ride to your driving style and environment.