This fits: '07-'13 Chevy/GMC Silverado/Sierra (Extended Cab ONLY)

HappiJac’s innovative Frame Mount Tie Down System puts leverage to work for you. Its design combines frame strength and sound engineering principles to create an I-beam truss structure that makes your camper an integral part of the truck, providing unsurpassed strength and security. Its Direct-to-Frame™ mount is strong and easy to use. While other tie downs may "hold your camper down," only HappiJac Tie Downs prevent camper movement in all directions (up-down, side-to-side, and front-to-back). 

• Design Combines Frame Strength And Sound Engineering Principles To Create An I-Beam Truss Structure
• Makes Your Camper An Integral Part Of The Truck, Providing Unsurpassed Strength And Security
• Direct-To-Frame Mount Is Strong And Easy To Use
• Prevent Camper Movement In All Directions (Up-Down, Side-To-Side, And Front-To-Back)

Requires Additional Parts:

 Stabilizer Bar, Model #USB-010 (Sold Separately)
Turnbuckle Set , Model #FM-TB or Model #FM-QLTB (Sold Separately)