2024 Toyota Tundra TRD Pro with Nathan AirChime K5LA 544 Train Horn Kit installed

2024 Toyota Tundra i-FORCE MAX TRD Pro

Nathan AirChime K5LA 544 Train Horn Kit

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Brandon P. just took his 2024 Toyota Tundra i-FORCE MAX TRD Pro to an entirely new level of loud with the Nathan AirChime K5LA 544 Train Horn Kit, a setup built for those who demand the very best in sound and performance. Known for its authentic locomotive tone and unparalleled volume, the K5LA transforms this already impressive TRD Pro into a true powerhouse on wheels.

This horn setup isn’t just about sound, it’s about presence. When that K5LA lets loose, it commands attention instantly, blending perfectly with the Tundra’s aggressive stance and powerhouse engine. The result is a build that’s as clean as it is thunderous, delivering the unmistakable HornBlasters experience.

Key Features

Genuine Nathan AirChime K5LA 544 Train Horn
Authentic, deep locomotive tone
Premium air system for maximum performance and pressure
Clean, professional install integrated with the Tundra’s undercarriage
Built to last with commercial-grade materials and fittings

Upgrade Your Ride

Experience the same unmatched tone and volume as Brandon’s TRD Pro.
Explore the Nathan AirChime K5LA 544 Train Horn Kit and make your vehicle impossible to ignore.

UP TO 1500% LOUDER

UNLIMITED HONKING

ZERO
DELAY

CAPABLE ONBOARD AIR SYSTEM

HornBlasters Shocker S6 544K Nightmare Edition Train Horn Kit

PRODUCT

PRICE

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SPECIFICATIONS

Part Number	HK-K5-544K
Operating Pressure	150 PSI
Restart Pressure	110 PSI
Voltage	12-Volt DC
Horn	Nathan AirChime K5LA (K5 low mount American tune)
Horn Material	Cast Aluminum
Horn Length	19″ (482.6 mm)
Horn Width	29.75″ (755.65 mm)
Horn Height	9.25″ (234.95 mm)
Horn Weight	37 lb (16.78 Kg)
Horn Port	½″ NPT

Tank	HornAir 5-gallon 8 port air tank
Tank Length	20.5″ (520.7 mm)
Tank Diameter	9.5″ (241.3 mm)
Tank Height	11.5″ (292.1 mm) (With Legs)
Tank Weight	20 lb (9.07 Kg)
Tank Ports	x7 1/2" NPT, x1 3/4" NPT
Max Amperage	26 amps
Maximum Duty Cycle	33% @ 100 PSI
Compressor Length	9.0″ (228.6 mm)
Compressor Width	4.0″ (101.6 mm)
Compressor Height	7.05″ (179.07)
Compressor Weight	8.00 lb (3.63 Kg)

FILL RATES

5.0 GALLON TANK	FILL RATE
0 to 150 PSI	6 min. 45 sec. (± 10 sec.)
110 to 150 PSI	2 min. (± 05 sec.)

Test Your Train Horn Knowledge

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Train Horn FAQ

Yes, the Nathan K5LA 544 Train Horn Kit is a complete system. It includes the five-bell Nathan AirChime K5LA horn, HornAir 5-gallon tank, compressor, hoses and fittings, wiring, and all mounting hardware needed for installation.

The Nathan K5LA is an authentic railroad horn with die-cast aluminum construction and stainless steel diaphragms. It delivers the genuine five-chime locomotive tone you hear on real trains, not a reproduction.

The 5-gallon tank provides 10-12 seconds of continuous honking at 150 PSI. After use, the system refills from 110 to 150 PSI in about 2 minutes, keeping you ready for repeated blasts.

Yes, the 5-gallon tank and compressor provide onboard air for inflating tires, running air tools, or powering other accessories. The system operates at 150 PSI with a 110 PSI restart pressure.

The K5LA measures 19" long by 29.75" wide by 9.25" tall and weighs 37 pounds. It features a 1/2" NPT port for air connection and is designed to fit under most full-size trucks and SUVs.

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