Bilstein B4 17-19 Audi A4 / A4 Quattro Rear Twintube Shock Absorber 2021-gmc-sierra-3500-hd-denali-esi6116564 Notched necks for easy clamp-on

Notched necks for easy clamp-on installation using 1" wide band style clamps 18325 (clamps not included)

yet still refined and far from obnoxious

Alternate muffler/ resonator with notched necks is 401342

The system features an updated version (compared to 140919) of the classic S-Type sound that delivers a powerful performance sound with no drone

5" diameter BORLA system utilizes the factory transition pipe between the cats and the muffler so that it will fit ALL Cab and Bed configurations

Bilstein B4 17-19 Audi A4 / A4 Quattro Rear Twintube Shock Absorber 2021-gmc-sierra-3500-hd-denali-esi6116564 Notched necks for easy clamp-onBilstein 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. Restores original driving comfort, handling and safety High power reserves for maximum