XTR End Joints — the rigid connectors that attach side and top braces to your XTR1 or XTR3 bed rack. These end joints are the critical join point between your rack's structural members and the T-slot extrusion rails, ensuring a tight, vibration-resistant connection that holds up on the trail. Specifications: Material: Aluminum Finish: Black hard-anodized Hardware: Included Available sizes: Set of 2 or Set of 8 Compatibility: XTR1 and XTR3 bed racks Select the pack size that matches your rack build: a set of 4 for the core joints, or a set of 8 for a fully connected rack. These are the same high-strength connectors we ship with every XTR bed rack — perfect for repairs, spare parts, or building out a custom setup. Questions about which pack size you need or fitment for your build? Email [email protected] and we'll help you spec it.