Equip your commercial vehicle or semi-truck with the Kleinn 412, a heavy-duty single roof-mount air horn designed for maximum acoustic presence. This high-performance horn features a 22.75-inch chrome-plated trumpet with a distinct rectangular opening, engineered to deliver the deep, authentic blast associated with over-the-road big rigs. A built-in protective horn cover is included to keep road debris and moisture out of the air system, ensuring long-term reliability in harsh environments.

• Construction: Chrome-plated stainless steel for superior corrosion resistance and a mirror-like finish.
• Mounting: Designed for external roof mounting on custom or commercial rigs.
• Air Requirements: Requires an onboard pressurized air system and a 1/4-inch airline input.
• Trumpet Size: Single 22.75-inch trumpet with a 2.25-inch base.
• Overall Dimensions: 25 x 8.5 x 4.5 inches.
• Installation Note: Requires Kleinn Model 330 Roof Mount Air Horn Fittings Kit for a leak-free setup (sold separately).
• Control Options: Can be operated via manual hand-pull air valve (Model 310 or 311) or an electronic solenoid valve (not included).
• MPN: 412

The Kleinn Vortex 4 Series Model 307 is a heavy-duty 12-volt electronic solenoid valve designed for high-performance air horn systems. Constructed with a robust all-brass valve body, it is engineered to maintain a leak-free seal under extreme pneumatic demands, supporting a maximum pressure of 175 PSI. This valve provides the high-flow capacity necessary for rapid activation and maximum volume in custom horn layouts or as a direct component upgrade.

• Direct Compatibility: Fits Kleinn compact air horns and train horn models 220, 500, 501, and 630.
• High-Pressure Performance: Rated for a maximum operating pressure of 175 PSI.
• Precision Fittings: Features a brass inlet fitting for 1/4" O.D. air tubing and a 1/4" Male NPT outlet.
• Durable Construction: Brass body with a chrome-finished solenoid housing for corrosion resistance and longevity.
• Electrical Specs: Standard 12-volt activation compatible with most automotive horn switch circuits.
• Manufacturer Part Number: 307

Designed for universal vehicle application, the Kleinn 102-1 is a high-output dual air horn system engineered for durability and a deep, authentic railcar tone. This kit features two all-metal zinc alloy trumpets measuring 15 inches and 12.25 inches with 3-inch bell ends, providing a distinct blast reaching up to 149.1 decibels at 150 PSI. Each trumpet is finished in Kleinn's exclusive XCR2.0 satin black coating, a corrosion-resistant treatment specifically formulated to withstand harsh road environments and off-road exposure.

This system includes the heavy-duty Vortex 4 Series Model 307 electronic solenoid valve, designed for 1/4-inch airline compatibility to ensure instantaneous air delivery. The compact footprint allows for flexible mounting in trucks, SUVs, and custom builds. Note: This horn system requires an onboard air system for operation.

• Manufacturer Part Number: 102-1
• Trumpet Material: XCR2.0 Coated Zinc Alloy
• Trumpet Lengths: 15" and 12.25" (3" Bell Ends)
• Solenoid Valve: Vortex 4 Series Model 307 (1/4" Airline)
• Sound Output: 149.1 dB @ 150 PSI
• Dimensions: 16.5" x 7.25" x 3.75"