Variable length crossbar (50–72 inches) adapts to various truck bed widths for optimal cargo fit
Compatible with Retrax XR and Diamondback bed covers for flexible installation options
No drilling or modification required, preserving truck bed integrity
Supports up to 850 pounds static and 300 pounds dynamic moving for secure transport
Compatible with multiple accessories including Yakima, Thule, Uptop, and more
Summarized by Shop
These 3" tall risers can be attached to a Retrax XR or DiamondBack bed cover, allowing you to safely transport rooftop tents, bikes, storage boxes, and just about anything else you can think of on your next adventure. The Retrax XR kit will fit many other similar extrusion rail systems. If you are curious about fitment with other setups,
4 VL crossbars, 2 risers, all assembly and mounting hardware
Vehicle Type
Truck
Summarized by Shop
4.7
6 ratings
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Fantastic product and super easy to install. Made in the USA 💪🇺🇸
J
Jason · June 16, 2026
The finish is crisp and its a great addition to the diamondback cover. UpTop has stellar customer service and products
J
Joshua · October 30, 2025
There are no instructions included. One has to fumble through National Treasure to figure out what the Founding Fathers intended. Other than that, amazing product!