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  5. Flatlaw 3 Liter Train Horn Kit | 12-Volt | 3-4 Seconds of Honk Time
Flatlaw 3 Liter Train Horn Kit | 12-Volt | 3-4 Seconds of Honk Time
Flatlaw 3 Liter Train Horn Kit | 12-Volt | 3-4 Seconds of Honk Time
Flatlaw 3 Liter Train Horn Kit | 12-Volt | 3-4 Seconds of Honk Time
Flatlaw 3 Liter Train Horn Kit | 12-Volt | 3-4 Seconds of Honk Time
Flatlaw 3 Liter Train Horn Kit | 12-Volt | 3-4 Seconds of Honk Time
Flatlaw 3 Liter Train Horn Kit | 12-Volt | 3-4 Seconds of Honk Time
Flatlaw 3 Liter Train Horn Kit | 12-Volt | 3-4 Seconds of Honk Time
Flatlaw 3 Liter Train Horn Kit | 12-Volt | 3-4 Seconds of Honk Time
Flatlaw 3 Liter Train Horn Kit | 12-Volt | 3-4 Seconds of Honk Time
Flatlaw 3 Liter Train Horn Kit | 12-Volt | 3-4 Seconds of Honk Time
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T**a d** i**s
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Verified purchase
US
Pitan bien alto muy buena
Item:
Stealth Black
2025-12-27
US
Nice setup and loud horn. I would recommend this. Please don’t honk when someone is close to your vehicle (-5 ft) Easy to install
2025-03-14
US
Overall great product, could use a little bit bigger air tank. Sounds great.
2024-09-10
US
Fast shipping with detailed instructions. Installed compressor inside bed on passenger side using self tappers and 1/2” isolators on the feet. Mounted horns using self tappers to bottom of bed right underneath compressor (on bed support bracing). Only place on truck I could mount these without any fabrication. By myself, it took about 4 hours to do the entire installation. This is high quality product with better than expected results. Scares the heck out of everybody, just what I needed!
2024-08-13
US
Bought for Father’s Day for my dad.. he haven’t assembled it as of yet.. but he love it
2024-06-23
US
Amazing! I mounted it between the front wheels because I have a single motor model which worked out perfectly. The compressor is in the front truck with the storage molding in place so it can be removed as needed for service. I wired in the toggle switch and push button so that I could **** the compressor entirely if needed due to a circuit draw but so far the compressor doesn’t draw unless actively filling. I’ll go out on a limb and say this size horn has not been installed by anyone in my area. It’s loud and the best thing I could do to this car. I’m beyond happy!
2024-06-06
US
This horn is so loud. It's so strong. It's not even funny.
2024-03-30
US
This product blows!, really loud. I seen a guys ******* fall out of his pants, when I hit the button.
2024-02-17
US
Had it installed by a mechanic , I could have done it but don’t have the time due to work. It would of taken me about 2 hours. Awesome horn , very load … wear earplugs ! Lol
2024-01-17
US
I made my own box to mount the compressor underneath the bed. I bought the train horn valve so I didn’t even worry about running wires to an electrical switch just ran air lines to the valve. The horn is pretty loud and has a good tone. I love this horn!
2024-01-16
US
I've had these for just over a week, I love the sound of them, definitely would buy a bigger tank, but it's really simple to install you can't screw it up.
2024-01-11
US
Awesome! The horns worked better than I expected and very Loud!
2023-11-23
US
I received my horn in a few days after I ordered it and had it installed a few days later. It is awesome, everything needed was included in the kit. It's definitely really loud , exactly what I wanted in my truck. Hornblasters is a great company and the horn was just what I was looking for.
2023-03-07
US
Great kit, super loud, and u get a 3second honk time out of this little guy.
2023-03-07
US
So... I opted to upgrade the pump/tank to the 2 gallon 150 PSI sealed air source, it's medium duty and weather resistant. I also installed an air pressure regulator so I can adjust the pressure down for normal driving (louder than stock horn but still booming! and make no mistake, this horn has a nice deep tone). With the pressure backed off to like 80psi it sounds great, plenty loud AND.... it seems like I'm getting endless honk ability LOL! The pump kicks in before I run out of air in the tank, it's just badass... and the tone is dead up like the Flatlaw audio sample on the website (which sounds deeper and better than the outlaw sample).
2022-09-20
US
This Flatlaw train horn is loud, had to mount a toolbox under the truck and put the Air Compressor inside that because its not weather proof but it worked out great, took a little extra longer to install also but it was worth it
2022-09-15
US
Fast delivery easy installation. I wasn’t quite sure how loud these horns were going to be but when I hit that button let’s just say I was very surprised highly recommend!
2022-09-01
US
I literally had no idea. No idea how loud this would be. Ordered and arrived within a couple of days. Went down to my local auto radio shop to beg them for an install. They weren’t concerned with the wiring part it was finding a place to mount the horns. They called in a fabricator and we all consulted and arrived at what I anticipated and wanted. 2022 Ram Limited with ram boxes. The ram box was perfect for the compressor mount and the flat horns were shoehorned in and mounted horizontally to the front cross member. Took a couple of days and man they worked hard but it’s perfect. Works flawlessly. When I hit that thing for the first time I couldn’t believe it. I had no idea. Of course my wife looked at me with that look. You know that look. Really? I mean really? She said. Hahahahhahahha. **** yeah I said. The only issue I’ve had thus far is a rupture in the black air line near the horns. One trip to Lowes for a splice connector and it was back up and running. Love blasting in our parking garage. Keeps them guessing. Nobody knows. I literally had no idea. Thank you guys!! Install was 3x the price of the horn kit but worth every penny.
2022-08-16
US
Mounted on the frame rail of an f350. I refuse to take out my spare tire for a horn so I went with this.
2022-07-15
US
I put this on my Toyota Tacoma and it is great. If your horn was weak like mines was get this flatlaw like me. It was lounder than I think it would be. sounds like train
2022-07-13
About this product
Details
Fit TypeUniversal
Included ComponentsHorns, Air System, Wiring Kit, Mounting Hardware, Air Line, and Ear Plugs
Region Of OriginChina
Voltage12-Volt
Country Of OriginChina
Product description
Description
THIS OUTLAW IS LAYING LOW
Introducing the Flatlaw 3-Liter train horn kit: where unparalleled sonic impact meets space-saving innovation. Evoking the rich, thunderous roar of the classic Outlaw, this reimagined design effortlessly accommodates tighter spaces without compromising on the signature sound. When room is limited but expectations are high, the Flatlaw 3-Liter emerges as the undisputed choice.
·Innovative Design for Tight Spaces: The Flatlaw 3-Liter offers the robust Outlaw sound in a unique flat configuration, ensuring even those with limited space can enjoy a commanding train horn.
·Rapid Recovery, Extended Honk Time: Despite its compact nature, our M3 3-liter air source unit delivers 3-4 seconds of powerful honk time and boasts a recovery rate of roughly 35 seconds.
·Effortless Installation: Arriving with a pre-installed 1/4" air valve and everything needed from start to finish, setting up the Flatlaws is a breeze.
·Sleek & Durable: With its heavy-duty black finish, not only does the Flatlaw look professional and stylish, but it's also built to last.
·Optimized Air Flow: The high-flow valve that comes pre-attached ensures maximum sound output every time you hit the horn.
(Note: Tank-mounted air compressors are not fully sealed. For this reason, the manufacturer recommends the tank/compressor system be mounted in the upright position in an enclosed space away from moisture, dirt, debris, etc... Failure to mount this product as directed will void the warranty)
**Detaching the compressor from the tank will void your warranty on this kit. If you need a solution where the compressor is detached, please look at our 232 and higher models. **
Includes
·Flatlaw Train Horn
·3-Liter compressor and tank combo
·12ft of 1/4" air line
·Pre-installed 1/4" electric air valve
·22ft of 10-gauge red wire
·22ft of 18-gauge blue wire
·Inline fuse holder, toggle switch, relay, and all electrical terminals
·All fittings & mounting hardware
·Detailed Instructions
·Earplugs
Specifications
·Part Number: HK-F3B-M3
·Horn: Flatlaw Train Horn
·Horn Length: 17.5" (444.5 mm)
·Horn Width: 16.25" (412.75 mm)
·Horn Height: 8" (203.2 mm)
·Horn Weight: 12.5 lbs (5.67 kg)
·Voltage: 12-Volt DC
·Air Source Unit: 3-Liter Air Source
·Operating Pressure: 120 PSI
·Restart Pressure: 90 PSI
·Air Source Length: 16.535" (420 mm)
·Air Source Width: 4.921" (125 mm)
·Air Source Height: 7.086" (180 mm)
·Fill Rates:- 0 to 120 PSI = 2 min. (± 10 sec.)- 90 to 120 PSI = 35 sec. (± 05 sec.)
Policies & Warranty Information
·Money-Back Guarantee/Refund Policy: All merchandise unless otherwise indicated may be returned within 30 days from the shipment arrival date for a refund. A Returned Merchandise Authorization (RMA) number is required for all returns. A 15% restocking fee may apply. Additional deductions may be made to reflect the products current market value. These terms apply to all refunds. Most products are shipped with a refund/replacement guarantee period unless otherwise noted in the product listing. Customers must inform HornBlasters.com of any order discrepancy within 7 days from the invoice date so that we may investigate and resolve the situation accordingly.
·Warranty: The components in this kit are backed by a 2-year manufacturer's defect warranty!
·HornBlasters.com Satisfaction Guarantee: HornBlasters.com offers our customers a 30-day satisfaction replacement or refund guarantee on all purchases, except when otherwise noted in the product listing.
·Cross-Shipments: HornBlasters.com will not cross-ship returned merchandise.
·Physical Damage Policy: Physical damage to any product purchased at HornBlasters.com will effectively void warranty coverage. Physical damage includes but is not limited to improper handling and/or any other type of damage sustained by irregular usage.
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