mandrautomotive
New member
Hey everyone,
The AT4 is built to leave the pavement behind, but once the sun goes down, there's always room for more usable light. If you're looking for a clean upgrade that doesn't require a bulky bumper-mounted bar, I wanted to share one of our favorite Sierra HD setups.
Our 2020+ GMC Sierra 2500HD/3500HD Dual 40s Light Bar Kit hides two 40-inch SLIM light bars behind the factory grille, giving you exceptional forward visibility while keeping the truck's OEM appearance intact. It's a vehicle-specific, bolt-on kit that uses factory mounting points, so there's no cutting or drilling required. The light bars are fully adjustable, allowing you to dial in the beam position, and the kit won't interfere with the active grille shutters.
A few highlights:
Any other AT4 owners running hidden grille lighting? We'd love to see your setup, and if you have any questions about fitment or installation, feel free to ask. Happy to help!
The AT4 is built to leave the pavement behind, but once the sun goes down, there's always room for more usable light. If you're looking for a clean upgrade that doesn't require a bulky bumper-mounted bar, I wanted to share one of our favorite Sierra HD setups.
Our 2020+ GMC Sierra 2500HD/3500HD Dual 40s Light Bar Kit hides two 40-inch SLIM light bars behind the factory grille, giving you exceptional forward visibility while keeping the truck's OEM appearance intact. It's a vehicle-specific, bolt-on kit that uses factory mounting points, so there's no cutting or drilling required. The light bars are fully adjustable, allowing you to dial in the beam position, and the kit won't interfere with the active grille shutters.
A few highlights:
- Fits 2020–2026 GMC Sierra 2500HD & 3500HD
- Compatible with AT4 and other HD trims
- Dual hidden 40" SLIM light bars
- Bolt-on installation
- No cutting or drilling required
- Available in White, Amber, or White with Amber DRL
- Backed by M&R Automotive's lifetime warranty
Any other AT4 owners running hidden grille lighting? We'd love to see your setup, and if you have any questions about fitment or installation, feel free to ask. Happy to help!
