Bilstein B4 OE Replacement-Suspension Strut Assembly (22-246547) _FM022SDL you get maximum protection that

you get maximum protection that exceeds the OE requirement for filter efficiency

It has the fewest moving parts of any automatic shifter in the B&M line and its patented internal "Z" shaped gate eliminates the possibility of over-shifting or missing gears

the unique and progressive rate coil design not only improve performance but enhance overall appearance

Reinforced Silicone Hoses:

making a complete set for your 08-21 STI

Bilstein B4 OE Replacement-Suspension Strut Assembly (22-246547) _FM022SDL you get maximum protection thatBilstein B4 OE Replacement dampers are specifically engineered to be the best choice for maintaining the original ride quality of your vehicle, while meeting or exceeding OE standards. These dampers are the ideal choice for the driver looking to restore the original performance and handling of their vehicle, with the added benefit of world famous Bilstein quality. Notes: It's recommended to replace shock or strut in pairs (passenger and driver side at