Adjust front camber and caster ±1.5° on the Audi B9 platform with these forged aluminum adjustable control arms from SPC. OE style booted ball joints and bonded rubber bushings maintain factory ride, handling and noise, vibration, & harshness (NVH) parameters. Audi's unique multi-link suspension creates a 'Virtual' SAI. The factory does not publish a specification for caster, but SPC recommends 5° to 6° of caster as a preferred angle for tracking and return to center on these cars. For the left hand (LH) side, use #81381. For the right hand (RH) side, use part number #81382. Want to be able to adjust both sides? Use part #81383. Forged 6061-T6 Aluminum construction for maximized strength at minimum weight OE style, maintenance free, bootedball joints Large 18mm threaded adjuster links Replacement pinch bolts included Forged 6051-T6 aluminum for strength and weight reduction Comes with pinch bolt hardware OE style bushing and ball joint maintain factory feel and noise reduction Kit includes both arms for the RIGHT side only Adjusts camber and caster plus or minus 1.5 degrees Applications Audi: A4 2017 - 2024 Audi: A4 Quattro 2017 - 2024 Audi: A4 allroad 2017 - 2024 Audi: A5 2018 - 2024 Audi: A5 Quattro 2018 - 2024 Audi: A5 Sportback 2018 - 2023 Audi: RS5 2018 - 2024 Audi: RS5 Sportback 2019 - 2024 Audi: S4 2017 - 2024 Audi: S5 2018 - 2024 Audi: S5 Sportback 2018 - 2024