The Kleinn 220 train horn add-on kit for 2007–2018 Jeep Wrangler JK and JKU provides a ground-shaking 154.2 dB output when operated at 150 PSI. This 100% bolt-on kit includes a custom mounting bracket, the 220 horn, wiring and a horn button and installs without drilling if using the factory horn button. It requires an onboard air source with a minimum 1-gallon tank to operate.
Kleinn 07-18 Jeep Wrangler JK/ JKU Model 220 Horns