The Premium K5 Train Horn Kit from HornBlasters pairs the legendary Nathan AirChime K5LA horn with a robust HornAir 844K onboard air system, delivering earth-shaking sound and authentic railroad tone straight to your vehicle. This premium kit includes an 8-gallon tank and a powerful 1NM compressor capable of up to 5–8 seconds of honk time, plus a 100% duty cycle up to 200 PSI, making ... https://hornblasters.com/products/premium-k5-train-horn-kit