The 40 mm extension arm moves the mount point out 40 mm to provide additional clearance between the mounted item and anything behind or below. This is typically used to provide space for larger saddlebags or accessories mounted below a Universal System Mount™. With this extension, and one of the new 5th generation mounts, the mount arm will be positioned 80 mm (3 1/8") from the slot opening in the saddle.
The extension arm requires a Universal System Mount™ purchased separately.
Weight: 10g (including hardware)