The JK220 Horn kit produces a ground shaking 154.2 dB at 150 PSI. The kit is 100% bolt-on and requires no drilling or cutting if installed using the factory horn button. Custom mounting bracket for the Jeep JK Wrangler. Includes mounting bracket, 220 train horn, horn wiring and a horn button. Can be used with the Kleinn JKOBA Onboard Air� system or any other onboard air system with a minimum 1-gallon tank.