CURT Manufacturing 113440 Features: Sealed Main Body Prevents Rusting From Inside Out Open Back End On Receiver For Easy Cleaning One-Piece Collar Reduces Rust And Ensures Strength Exceeds V-5 Standards Durable Powder Coat Finish Resists Rust/Corrosion Robotic Welding For Superior Strength And Fit Limited Lifetime Warranty To Original Purchaser Height: 21.00 Width: 13.00 Length: 51.00 Weight: 55.00 lbs Fitment: 2011/Audi/A6/Base Sedan 4-Door/3.2L 3123CC V6 GAS DOHC Naturally Aspirated::RearDrilling Not Required~ Main Hitch Body Exposed~ Install Time 30 Minutes^^2011/Audi/A6 Quattro/Base Sedan 4-Door/4.2L 4163CC V8 GAS DOHC Naturally Aspirated::RearDrilling Not Required~ Main Hitch Body Exposed~ Install Time 30 Minutes^^2011/Audi/A6 Quattro/Base Sedan 4-Door/3.0L 2995CC V6 GAS DOHC Supercharged::RearDrilling Not Required~ Main Hitch Bod...