Model 411: Single Round Roof Mount 25" Air Horn - Chrome
BIG RIG AUTHORITY
Bring the unmistakable thunder of a Mack or Peterbilt to your Rig. Whether starting a fresh build or upgrading your current setup, the Kleinn Model 411 delivers a deep, iconic semi-truck roar that demands immediate respect. Precision-engineered for high-pressure performance, these horns thrive between 120–175 PSI to ensure maximum acoustic impact every time you hit the valve.
CLEAN AESTHETICS, MASSIVE PRESENCE
The Model 411 strikes a perfect balance between its imposing 25” wide bell round trumpet and a streamlined, aerodynamic profile. Engineered with a durable stainless-steel trumpet and discrete underside ¼” air inlet, it eliminates unsightly roof tubing for a clean, factory-professional chrome-plated finish. Whether you’re running a classic manual pull-valve or a modern 12-volt solenoid, the 411 is the ultimate choice for versatile, classic Big Rig ROAR!
WHY CHOOSE THE MODEL 411 ROOF-MOUNT HORN?
- Imposing 25" Trumpet Profile: Features an extra-long, commercial-grade single round trumpet designed to replicate authentic highway locomotive volume and pitch.
- Underside Air Inlet Path: Keeps all pneumatic connections and lines cleanly hidden underneath the mounting foot, avoiding exposed cabin roof infrastructure.
- Mirror-Polished Stainless Base: Solid stainless-steel fabrication with deep chrome plating provides complete defense against weather, corrosion, and rust.
THE VERDICT: The definitive single-trumpet layout for pure long-haul character. Model 411 brings the exact structural weight, look, and ear-piercing projection of industrial diesel trucks down to commercial conversions and service vehicle roofs.
WHAT'S INCLUDED?
- Model 411: Single Round Roof Mount 25" Air Horn
- Pneumatic hardware: 1/4" Compression Fitting (Underside 1/4" OD Airline Entry)
- Mounting Hardware: Nuts, Bolts, Washers, and Trumpet Mounting ORE.
⚠️ REQUIRED AIR SYSTEM COMPATIBILITY
This air horn requires a compressed air system to operate, with an optimal cut-off pressure between 120–175 PSI. When selecting your setup, remember the Kleinn rule of thumb: higher pressure delivers a louder blast, while a larger tank ensures a longer blast.
COMPATIBLE KLEINN COMPRESSOR SYSTEMS
- 6270: 130 PSI | 25% Duty Cycle | Sealed Air System
- 6275: 150 PSI | 50% Duty Cycle | Sealed Air System
- 6350: 150 PSI | 100% Duty Cycle | Heavy-Duty Onboard Air System
- 6450: 200 PSI | 100% Duty Cycle | Ultra Heavy-Duty Onboard Air System
HORN ACTIVATION OPTIONS
- Manual Pull: Use or (Sold Separately)
- Electric Push-Button: Use or (Sold Separately)
- New Installations: Requires Model 330 Fitting/Mounting Pack (Sold Separately)
MODEL 411 SPECIFICATIONS:
| Model 411 Chrome Roof Mount 25" Air Horn |
| Warranty | 1-Year Warranty |
| Construction | Chrome Plated Stainless Steel |
| Manual Horn Activation (Sold Separately) | P/N 310 chain style or 311 lanyard style |
| 12-Volt Horn Activation (Sold Separately) | P/N- 307 Light-Duty or VX6003 Heavy-Duty |
| Min - Max Pressure | 120 - 175 PSI |
| Output (dB) @ 150 PSI | 150.1 dB |
| Dimensions | 25” L x 6” W x 6” H |
| Minimum Tank Size | 1.5 Gallon |
| Airline Input Size / Fitting Pack Part # | ¼” Airline / 330 roof mount fitting pack |
| Shipping Weight | 5 lbs |
INSTALLATION INSTRUCTION LINKS:
