Model 500 Chrome Plated ABS Triple Train Horns w/ 307 Solenoid
KL 500
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Model 500: The "Sentinel" Chrome-Plated ABS Triple Train Horns - 307 Solenoid - 1/4" Airline
Performance & Sound Profile
The Model 500 Sentinel is the foundation of our 500 Series train horn lineup, offering a significant step up in depth and resonance from the compact horn series. Featuring three separately tuned trumpets (16", 14", and 11"), it produces an authentic locomotive tone with a measured output of 151.8 dB. By utilizing chrome-plated high-impact ABS, we’ve engineered a horn that delivers a rich, deep sound profile without the excessive weight of all-metal units, providing a "clear the way" authority that is loud, professional, and commanding.
Advanced Air Flow & Mounting
Equipped with our high-performance Model 307 Vortex™ 4 Solenoid Valve, the 500 Sentinel ensures reliable air flow for an instantaneous, crisp blast every time you hit the switch. The ABS trumpets are mounted on a heavy-duty triangular right-angle bracket crafted from sturdy aluminum, which is designed for versatile installation on rooftops or under-body frames. A unique feature of this mount is the reversible trumpets, allowing you to face them in different directions to create a realistic, multi-directional sound effect just like a real moving train.
Professional Grade Construction and Performance
The Model 500 Sentinel is the perfect fit for the enthusiast who wants more presence than compact air horns but doesn't require the extreme, maximum-output intensity of our Top Tier 502 Kraken Horns. It offers the perfect balance of durability and performance, making it the ideal choice for trucks and SUVs looking for a legitimate train horn look and sound.
WHY CHOOSE MODEL 500 SENTINEL HORNS?
- Tri-Mount Chrome Design: Featuring three high-impact ABS trumpets integrated into a single heavy-duty air block with a right-angle mounting bracket, this system is engineered for maximum durability and a massive, multi-tonal locomotive blast. Its lightweight, compact architecture allows for a seamless, bolt-on installation across a wide variety of vehicle applications.
- True Locomotive Tone: The three-trumpet design (16", 14", and 11") is precision-tuned to create a deep, harmonic chord that mirrors a real train.
- Optimized Performance: Positioned as the base tier in the series, the 500 Sentinel features a 307 chrome solenoid fed by a 1/4" airline that delivers that rich, more resonant blast than the smaller bell Kleinn compact horn series.
- Weather-Resistant Durability: Chrome-plated high-impact ABS trumpets provide a mirror-finish look while remaining lightweight and resistant to the elements.
- Customizable Soundscape: The reversible trumpets allow you to direct sound both forward and backward, creating a realistic multi-directional effect.
- Versatile Mounting: The heavy-duty aluminum triangular bracket is designed for a low-profile fit, making it ideal for both under-body and rooftop installations.
THE VERDICT: The 500 Sentinel is the definitive jump into the world of premium Kleinn train horns. It's a cost-effective, high-output solution that proves you don't need to break the bank to command the road with a legendary locomotive roar.
WHAT'S IN THE BOX?
- (500) Sentinel Triple Trumpet Assembly: High-impact ABS chrome-plated trumpets in 16", 14", and 11" lengths.
- Triangular Mounting Base: Heavy-duty aluminum right-angle bracket for secure, multi-surface mounting.
- Hardware Kit: All necessary bolts and fasteners for the horn and bracket assembly.
- (Model 307) Solenoid: (1) Vortex™ 4 12V Solenoid. Dedicated electronic air horn solenoid valve.
- (Model 25014-1) Airline: 12 ft ¼” Outer Diameter Airline
THE KLEINN 500 SERIES HIERARCHY
Model 500 "Sentinel": The Foundation of Authority
The Model 500 "Sentinel" serves as the essential Entry-Level Powerhouse for the 500 Series. Designed to be the "watchman" of the road, it provides the authentic locomotive sound Kleinn is famous for without the premium price tag. Engineered with high-impact chrome ABS trumpets, the Sentinel offers incredible durability and a mirror-like finish that stands up to the elements. Driven by our reliable chrome 307 solenoid and a high-pressure 1/4" airline, this system delivers a sharp, aggressive blast that instantly replaces your weak factory horn with a reliable and authoritative presence. It is the perfect starting point for drivers who want a professional-grade train horn that is both lightweight and incredibly loud.
Model 501 "Warlock": The Bridge of the 500 Series
Model 501 "Warlock": The Mid-Tier. A step up in resonance and tone, this system takes performance to the next level by moving from composite materials to premium chrome steel trumpets. The result is a significant increase in resonance and tonal depth, producing a "magical" deep harmonic chord that carries much further than standard horns. Powered by our reliable chrome 307 solenoid and a high-pressure 1/4" airline, the Warlock offers the perfect balance of show-quality aesthetics and a penetrating locomotive blast. It is the ideal choice for drivers who want a richer, more melodic train sound and the rugged durability of chrome-plated steel.
Model 502 "Kraken": The Apex of the 500 Series
Model 502: The Top-Tier. Engineered for those who demand nothing less than total dominance. By upgrading to the Vortex 6 VX6003 heavy-duty brass solenoid and a massive ½” high-flow airline, the Kraken moves a staggering volume of air instantaneously through the chrome finished steel, wide bell train horns. As the king of the family, it delivers maximum air volume and the highest output possible, producing a bone-rattling locomotive blast that is significantly louder and deeper than the entry-level models. If you want the ultimate "get out of the way" authority, the Kraken is your weapon of choice.
⚠️ System Requirements & Compatibility
The 500 Series Train Horns require compressed air and require a minimum 2.5-Gallon air tank for sufficient blast time. The optimal cut-off pressure is between 140 PSI to 160 PSI.
Kleinn air systems designed specifically to run the 500 Series horns:
- Model 6350: 150 PSI | 100% Duty Cycle | Heavy-Duty Onboard Air System
- Model 6450: 200 PSI | 100% Duty Cycle | Ultra Heavy-Duty Onboard Air System
The "Sentinel 500" is the official replacement for the following Kleinn Air Systems:
- Universal ProBlaster™ Train Horn Kits: Model HK6
Air Horns vs. Train Horns
Find Your Signature Blast
Compact Air Horn Series
Engineered for "Emergency Vehicle" authority. This series delivers a sharp, high-frequency blast designed to cut through ambient noise instantly. With 3.5" bells, these horns produce a piercing scream that commands attention in heavy traffic.
- Compact Horns: 102 / 130 / 141
- Kits: HK2 / HK3 / HK4
- Compact Horns: 101 / 102-1 / 130-1 / 141-1
- Kits: HK1 / HK2-1 / HK3-1 / HK4-1 / HKUTV / Vehicle Specific Kits 102
Train Horn Series
Don’t just make noise—make an impact. Engineered with massive 6-7" bells, our Train Horns move huge volumes of air to create a deep, earth-shaking rumble. This is the authentic tone of a 40,000-lb locomotive.
- Train Horns: 500 / 501 / 502 / 630
- Kits: HK6 / HK8
- Train Horns: 220 / 230 / 730
- HK5 / HK7 / HK9 / HK9-Slimline / All Vehicle Specific Train Horn Kits
Professional-grade engineering. Legendary Kleinn Performance.
Too Loud? Too Bad!
Train Horn Specifications
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Tri-Mount ABS Train Horns |
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Part Number |
Model 500 |
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Number of Horns |
3 Horns (Individual Mount) |
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Warranty |
1-Year Warranty |
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Construction |
Chrome ABS Trumpets |
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Activation 12v Solenoid (Chrome) |
P/N- 307 |
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Min / Max Pressure |
140 - 160 PSI |
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Output (dB) @ 150 PSI |
151.8 dB |
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Dimensions Overall |
15.5” L x 11.5” W x 11.5” H |
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Dimensions (Each Individual Horn) |
16” Lg. - 14" Med. - 11" Sm. |
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Minimum Tank Size Required |
2.5-Gallon |
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Airline Length and Size Included |
12’ of ¼” OD Airline |
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Installation Instruction Links:

$239.95