Model 501: The "Warlock" Chrome-Plated Steel Triple Train Horns - Chrome 307 Solenoid
KL 501
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Model 501: The "Warlock" Tri-Mount Chrome-Plated Steel Triple Train Horns - 307 Solenoid - 1/4" Airline
PERFORMANCE & SOUND PROFILE
The Model 501 Warlock is the premium mid-tier upgrade in our 500 Series train horn lineup, offering a massive step up in resonance and tone from composite air horns. Moving from composite materials to three precision-tuned steel trumpets (16", 14", and 11"), it produces a majestic, deep harmonic chord that carries much further down the road. Finished in a mirror-like chrome plating, we’ve engineered a horn that provides show-quality brilliance paired with an authentic locomotive roar, ensuring 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 Series architecture ensures reliable air flow for an instantaneous, crisp blast every time you hit the switch. The steel trumpets are integrated into a single heavy-duty air block with a triangular right-angle bracket crafted from sturdy aluminum, 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 501 Warlock is the perfect fit for the enthusiast who wants a richer, more melodic train sound and the rugged durability of chrome-plated steel without requiring 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 THE "WARLOCK” 501 HORNS?
- Tri-Mount Chrome Design: Featuring three premium steel 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 clean 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 mid-tier option in the series, the 501 Warlock features a 307 chrome solenoid fed by a 1/4" airline that delivers a rich, more resonant blast than the smaller bell compact horn series.
- Weather-Resistant Durability: Premium chrome-plated steel trumpets provide a mirror-finish look while remaining exceptionally rugged 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 Warlock 501 is the perfect step up into the world of premium steel Kleinn train horns. It's a cost-effective, high-output solution that proves you can capture a richer, more melodic train sound and command the road with a legendary locomotive roar.
WHAT'S IN THE BOX?
- (501) Warlock Triple Trumpet Assembly: Premium steel 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 1/4” Outer Diameter Airline
THE KLEINN 500 SERIES HIERARCHY
MODEL 500 "SENTINEL": THE FOUNDATION OF AUTHORITY
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
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
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 1/2” 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
These units require compressed air and demand 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 "WARLOCK 501" IS THE DIRECT REPLACEMENT FOR:
- 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, 102-1
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
- Kits: HK5 / HK7 / HK9 / HK9-Slimline / All Vehicle Specific Train Horn Kits
Professional-grade engineering. Legendary Kleinn Performance.
Too Loud? Too Bad
Train Horn Specifications
|
Tri-Mount Steel Train Horns |
|
| Part Number | Model 501 "Warlock" |
| Number of Horns | 3 Horns (Individual Mount) |
| Warranty | 1-Year Warranty |
| Construction | Chrome-Plated Steel Trumpets |
| Activation 12v Solenoid (Chrome) | P/N- 307 |
| Min / Max Pressure | 140 - 160 PSI |
| Output (dB) @ 150 PSI | 151.8 dB |
| Dimensions Overall | 15.5” L x 11.5” W x 11.5” H |
| Dimensions (Each Individual Horn) | 16” Lg. - 14" Med. - 11" Sm. |
| Minimum Tank Size Required | 2.5-Gallon Tank Minimum |
| Airline Length and Size Included | 12’ of 1/4” OD Airline |
Installation Instruction Links:

$289.95