Thule Thule 904650 T2 Pro X Add-On allows you to add an additional 2 bike carrying capacity to the Thule 904450 T2 Pro X 2" - sold separately. 

The T2 Pro X Add On features frame free clamping that works with all types of bikes from carbon frames, mountain bikes, road bikes, e-bikes, and bike tires up to 3" wide without the use of an adapter.

To carry fat tire bikes up to 5" you can purchase the Thule T2 Pro X Fat Tire Kit, sold separately.

A 2-Pack of Thule One Key System Locks can be purchased separately to prevent theft of your bikes.

Features

• Fits 2 bikes up to 50lb each
  
• Compatible with Thule 904450 T2 Pro X 2", sold separately
  
• Carries all types of bikes up to a 3" tire width
  
• Fat Tire Kit available for tire widths up to 5"
  
• Add bike security by purchasing a Thule 2-Pack Locks