Flatlaw 3-Liter Train Horn Kit installed on a 2021 Ford F350

2021 Ford F350

Flatlaw 3 Liter Train Horn Kit

SOUND SAMPLE:

Mike K. upgraded his 2021 Ford F350 with our Flatlaw 3-Liter Train Horn Kit, transforming his truck into a high-powered, attention-commanding machine. This compact yet powerful setup delivers impressive sound output while maintaining a clean, stealthy installation thanks to its flat-mount design.

Designed for trucks with limited mounting space, the Flatlaw 3-Liter Kit provides a deep, loud tone with fast air recovery and dependable performance. Its low-profile layout allows the components to mount snugly against the frame, making it an excellent option for lifted or lowered trucks where space is at a premium.

Mike’s Ford F350 now features a horn system that enhances both its visual presence and road utility. Whether clearing the road ahead or making a bold statement at truck meets, the Flatlaw Kit gives this build the extra edge it needed.

Key Features:

Train Horn System: Flatlaw 3-Liter Train Horn Kit
Low-Profile Design: Ideal for trucks with tight mounting space
Sound Output: Loud, deep tone with fast recovery time
Installation: Stealthy flat-mount setup
Utility: Perfect for everyday use and shows alike

Looking for a clean, low-profile train horn setup? Discover how the Flatlaw 3-Liter Kit fits perfectly under trucks like Mike’s.

UP TO 1500% LOUDER

UNLIMITED HONKING

ZERO
DELAY

CAPABLE ONBOARD AIR SYSTEM

HornBlasters Shocker S6 544K Nightmare Edition Train Horn Kit

PRODUCT

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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	12.5lbs (5.67 kg)
Voltage	12-Volts DC

Air Source Kit	3-Liter air compressor & tank combo
Operating Pressure	120 PSI
Restart Pressure	90 PSI
Air Source Length	16.535" (420mm)
Air Source Width	4.921" (125mm)
Air Source Height	7.086" (180mm)

FILL RATES

3-LITER AIR TANK	FILL RATE
0 to 120 PSI	2 min. (± 10 sec.)
90 to 120 PSI	35 sec. (± 05 sec.)

Test Your Flatlaw 3-Liter Train Horn Kit Knowledge

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Frequently Asked Questions

The Flatlaw 3-Liter delivers impressive sound output while maintaining a clean, stealthy installation thanks to its flat-mount design. The low-profile layout allows components to mount snugly against the frame, making it excellent for lifted or lowered trucks where space is at a premium.

The Flatlaw 3-Liter features a low-profile horn measuring 17.5" L × 16.25" W × 8" H with compact yet powerful design operating at 120 PSI. The system includes a 3-liter air compressor and tank combo measuring 16.535" L × 4.921" W × 7.086" H with 90 PSI restart pressure.

The Flatlaw 3-Liter perfectly complements the Ford F350's heavy-duty capabilities with its stealthy flat-mount setup and powerful sound output. This system transforms work trucks into high-powered, attention-commanding machines that enhance both visual presence and road utility, perfect for everyday use and truck meets.

The flat-mount design provides a deep, loud tone with fast air recovery and dependable performance while maintaining a clean, stealthy installation. Components mount snugly against the frame, making it an excellent option for trucks with limited mounting space or custom suspension setups.

The Flatlaw 3-Liter represents the perfect stealth upgrade, delivering up to 1500% louder sound with zero delay activation in a low-profile design ideal for space-limited builds. This system gives trucks the extra edge they need while maintaining clean installation and professional appearance.

Got your own setup to show off? Drop it below and join the HornBlasters family of loud legends! Click the button below to submit your install photos to our media submission form!

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