Adjust front camber and caster - 1.5deg on the Audi B5B6B7 and C5 platforms 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, and 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 5deg to 6deg of caster as a preferred angle for tracking and return to center on these cars. This kit includes two arms to replace the two front upper arms on the left hand (LH) side. For the right hand (RH) side, use part number 81352. Want to be able to adjust both sides Use part number 81353. SPC Arms Feature Forged 6061 - T6 Aluminum construction for maximized strength at a minimum weight OE styel, maintenance free, booted ball joints Large 18mm threaded adjuster links Replacement pinch bolts included Need to replace the ball joint boots on these arms We have replacement kits available. Part No. 81354. California Residents WARNING