This kit has two spacers with extended mounting bolts for our 2-Banger option and four spacers with extended mounting bolts for our 4-Banger option. 

The spacer kit allows you to add an additional inch to the height of the River Quiver fly rod holder on your roof rack. It can be used to make sure you have the proper clearance from a back window or hatch if needed. Without this integral piece you will be destined to hit your head on that back window at some point.