The ultimate NECK for your custom chopper frame build. Styled as close as possible to the original OG casting but made from DOM steel and machined to exacting tolerances, this is the neck you want for that show winning chopper you were born to build. 5.625 tall and 1.313 ID for standard HD neck cups, not included. Don't waste time hacking up an old casting just to find out the neck cups fit sloppy.