In the spare tire location on Stephen's 2017 F150 you can find our Shocker S6 544K. Installed completely out of sight and tucked up under the bed the Shocker S6 is a force to reckon with. Having a similar tone and coming within a decibel of the authentic locomotive horns. Our Shocker S6 will provide Stephen with the power of a locomotive right at his fingertips. Paired with our 5-gallon air tank and the Viair 444C air compressor, this kit will provide roughly 8-10 seconds of honk along with the ability to air up tires if needed. The combination of this insanely loud train horn and a capable onboard air system creates the perfect dual purpose kit.