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







