All SuperGlide hitches require the installation of a capture plate in order for the hitch to function properly. This capture plate is to be used with Lippert 1621, 1116, 1716 pin boxes that are 13-1/4" wide. See dimensions below and picture 2 diagram.
Lippert 1621 - A) 13-1/4" x B) 3-3/8" x C) 8-7/8"
Lippert 1116 - A) 13-1/4" x B) 3-1/2" x C) 9-3/16"
Lippert 1716 - A) 13-1/4" x B) 3-1/4" x C) 8-7/8"
Allows the trailer to guide the Superglide hitch & move it fore & aft when vehicle & trailer are turning
