The stock roof rack that comes with all trailers is only adjustable up/down - This Expandable Roof Rack allows for adjustment of the rack towers to also be adjustable forward and backward.

The Expandable Roof Rack also looks amazing and provides more top cargo space. 

Other features include:

1) Quick Removability of Rack Towers

2) Forward/Backward Adjustability

3) 48'' T-Slot Aluminum bars at base of rack can be installed for mounting of cases, slides and cargo. 

Rack height adjusts from 10'' - 17''

Dynamic Weight Rating of 450lbs