R1 WING FOR THE NNBS SILVERADOS. WING WILL BOLT UP TO OEM HOLES OVER A SMOOTH TAILGATE CAP. OEM "FLAT TOP" STYLE CAP WILL NOT WORK. YOU WILL NEED A SMOOTH CAP. IF YOU DO NOT HAVE ACCESS TO ONE, THEN MAKE SURE TO ADD ONE. THE CAP WILL HAVE THE HOLES PRE-DRILLED. SOME MINOR MODIFICATION *MIGHT* BE NEEDED TO THE PRE-DRILLED HOLES IN THE PLASTIC CAP TO ALLOW THE HOLES ON THE WING AND TAILGATE TO LINE UP. IF YOUR TAILGATE DOES NOT HAVE THE OEM RIVET NUTS (EMPTY HEX HOLE) , THEN YOU WILL NEED TO HAVE YOUR LOCAL DEALERSHIP INSTALL THEM.
 
ALL WINGS ARE CNC WATER JET CUT FROM 3/16" & 1/2" THICK ALUMINUM AND WELDED FOR A HIGH QUALITY AND PERFECT FIT EVERY TIME.