The Kleinn Direct-Fit “Demon” Train Horn & Onboard Air System is designed for truck owners who want maximum train horn performance without custom fabrication. It delivers an earth-shaking locomotive blast while providing a fully integrated onboard air system tailored to specific vehicles.
Built around the powerful Model 730 “Demon” triple train horns, this system features large stainless steel trumpets that produce a deep, harmonic tone with extreme output. Combined with a high-performance compressor and properly sized air tank, it ensures consistent, powerful blasts with fast recovery.
Additional features include a 150–200 PSI waterproof compressor (100% duty cycle), a vehicle-specific mounting system, and precision-engineered brackets that allow installation in optimized locations such as frame rails, underbody, or spare tire areas depending on the application.
Engineered with true vehicle-specific fitment, each kit is designed for seamless integration with select trucks—eliminating the trial-and-error of universal systems.
Installation is typically a direct bolt-on process using included brackets and hardware, making it significantly easier than universal horn kits while maintaining a clean, factory-like appearance.
Whether you're upgrading for towing safety, off-road presence, or the loudest possible horn system, this direct-fit solution delivers unmatched performance and convenience. Now Available at LEER!
Features & Specifications
Product Type: Train Horn & Onboard Air System (Direct-Fit)
Material: Stainless steel trumpets / steel air tank
Finish Options: Black XCR2.0 / stainless components
Mounting Type: Vehicle-specific bolt-on
Fitment: Vehicle-specific (see applications below)
Design: Triple train horn system with integrated onboard air
Key Dimensions: Varies by vehicle application
Functionality:
- Multi-tone train horn output (~157–159 dB)
- Full onboard air system (tires, accessories, tools)
- High-pressure operation (150–200 PSI range)
Available Options
The Kleinn Direct-Fit Demon System is available for:
Vehicle Fitments:
- 2021–2024 Ram TRX
- 2019–2024 Ram 1500
- 2009–2018 Ram 1500
- 2014–2023 Ram HD 2500/3500
- 2023–2024 Super Duty (F-250 / F-350 / F-450)
- 2017–2022 Super Duty (spare tire mount system)
- 2011–2016 Super Duty
- 2017–2021 Ford Raptor
- 2009–2014 SVT Raptor / F-150
- 2020–2025 Silverado/Sierra 2500HD/3500HD
- 2007–2019 Silverado/Sierra 2500HD/3500HD
- GM 1500 (various years)
Finish Options:
- Black system components (standard)
Configurations:
- Standard direct-fit mounting system
- Spare tire mount system (select Super Duty applications)
Choose your vehicle-specific kit for the easiest installation and best performance—no custom fabrication required.
Why Choose Kleinn Direct-Fit Demon Systems?
This product is ideal for customers who want top-tier performance with the simplest installation possible.
- Eliminates guesswork with vehicle-specific engineering
- Loudest horn system available in a direct-fit package
- Clean, factory-style integration
- Full onboard air capability for added functionality
What’s Included
- Triple stainless steel train horns (Model 730 Demon)
- Vehicle-specific mounting brackets
- 150–200 PSI waterproof air compressor (100% duty cycle)
- Air tank (size varies by application)
- High-flow solenoid and valve system
- Airline tubing and fittings
- Wiring harness, relay, and horn activation switch
- Installation hardware and instructions
Installation Notes
- Designed for direct bolt-on installation (vehicle-specific)
- No drilling required on most applications
- Requires 12V electrical connection
- Typical install time: 3–6 hours depending on vehicle
- Mounting location varies (frame rail, underbody, spare tire area)
Warranty Information
Kleinn Warranty
Kleinn products are backed by a limited warranty, covering defects in materials and workmanship.
