Rhett took his 2008 GMC Sierra 1500 Crew Cab to the next level with a powerful upgrade, our legendary Shocker XL Train Horns. Built for both volume and durability, the Shocker XL horns deliver a sound that replicates a real locomotive, making this Sierra impossible to ignore on the road.
Known for their rugged construction and extreme loudness, the Shocker XL horns are a staple in our Conductor’s Special Train Horn Kits. Rhett’s installation ensures his truck not only stands out visually, but also audibly, whether he's cruising through town or pulling up to a show.
Key Features:
Feature Highlights
- Shocker XL Train Horns bring legendary volume and durability to the GMC Sierra 1500
- Four-bell design (19.50", 16.25", 14.75", 12.75") creates authentic train horn chord
- High-impact fiberglass reinforced ABS construction for long-term performance
- Individual bell mounting flexibility perfect for custom crew cab installations
- Lightweight 4.5-pound design with 5" flares delivers extreme loudness
UPGRADE YOUR SIERRA WITH LEGENDARY SOUND
Experience the same unmatched volume and durability as Rhett's Sierra. Explore the Shocker XL Train Horns and make your truck impossible to ignore on the road.







