ATL Autosports Performance Brake Rotors REAR PAIR Fits 2011 Ford F-350 Super Duty [4WD-SRW] [MFG To 09/15/10] ATL54141-42DDS Fits the Following Vehicle ONLY: 2011 Ford F-350 Super Duty [ 4WD - SRW ] [ Manufactured To 09/15/2010 ] If This Is Not The EXACT Fit For Your Vehicle, Please Contact Us With Your Year, Make, & Model, So We Can Provide You With The Correct ASIN. OE Replacement - Guaranteed To Fit Without Modification - Drill Holes Can Help Reduce Temperatures By As Much As 200 Degrees, Increase Stopping Power, & Prolong Brake Life For Even The Most Demanding of Driving Conditions. Our Curved "OFF THE EDGE SLOTS", Are State of the Art Technology. They Allow Gases, Debris & Water to Not Just Escape Off the Rotor, But to Be Pulled Away From the Center of Your Braking System As You Stop. All Machining Done In The USA - Silver Zinc Plated To Inhibit Rust