14-17 Chevy Silverado GMC Sierra 1500 2500 3500 HD 5.5ft Bed Rails Black Speedzone Performance LLC Improved turbo spool and throttle

Improved turbo spool and throttle response

Does aluminum need protection before I install it

Direct replacement for OEM part number 027 113 357A

creating a tight fit with a smooth friction free action

14-17 Chevy Silverado GMC Sierra 1500 2500 3500 HD 5.5ft Bed Rails Black Speedzone Performance LLC Improved turbo spool and throttle5. 5ft Bed Rails Black Hard Panel Factory style bed rails that bolt to your truck bed without drilling or modification. Built from hard panel construction in satin black finish. Designed for straightforward installation with basic hand tools and standard fasteners. Ships from FL Warehouse Factory Mounting Points In House Quality Check Key Features No Drill Design Mounts at existing factory points; no bed modification required. Satin Black Finish Ready