Fits 3", 4", or 4 1/2" wide Fat tire single bike rack rail kit. Fits Yakups brand racks.

Call us at 518-791-1121 or email us if you need assistance with placing an order..  Larry@rvkayakracks.com   

Each kit Includes mounting bolts, straps, xxl bike hook for one bike

One bike Rail kit:  This patented rail attachment replaces our standard vertical bike rack rail and allows up to one bike to fit  3"wide,  4" wide, or up to 4 1/2" wide tires to strap right on the new rails. If your bikes are longer than 74" you must notify us in order to get the correct length bike channel. Each patented vertical bike rack kit comes with all hardware, large  steel wheel  hook, and straps. Installation instructions included. (fits one bike) This is made from rust proof aluminum 3/16" thick. Up to two Fat tire rails can be added.  Very heavy duty to protect your valuable bike. If either bike has rear fenders you need to add Rear Fender protector blocks to your order on accessory page. Weight each Fat tire Rail is 12 lbs

Note: Fat tire bikes are usually much heavier than regular bikes and loading these may require a strong person or sometimes two to load. Bikes over 65 lbs are not recommended.  RV's  including Fifth wheels may also require additional reinforcing of the RV hitch tube in order to prevent vertical hitch flex. 

The solid 2" lower rack shaft option is available on our accessory page and recommended in most cases carrying heavy loads such as 65 lb bikes and kayaks over 48 lbs each.