Bike Rack Base Extenders Mount Arm To check if your saddle

To check if your saddle has the required interface

Compatibility Features Fits rear saddle rails with a width between 32 and 75 mm (1-1/4" to ~3")

Can attach one or two devices at the same time

This kit is made from bio-plastic

Bike Rack Base Extenders Mount Arm To check if your saddleExtends the mounting position of a bike rack accessory plate by 1 or 1. 5 in. We make these with a carbon fiber composite material that is both light and strong. This option is better than using a mount arm extension because it will be a much stronger and will generally result in more space for the device. If fender clearance is an issue, this is typically the best and most reliable option. Includes the extension, two M4 screws, locknuts, and four