2007.5-18 GM 1500 Truck Complete Bolt-On Dual Train Horn Kit - 220/6270RC

Black Bolt-On Air Horn System for 1978-up Harley-Davidson (W/COWBELL HORN COVER)

2007-18 Jeep JK and JKU Add-on Train Horn Kit REQUIRES COMPRESSOR and TANK

2014-16 GM 2500/3500HD OBA - DISCONTINUED - Superceded by GMHD-OBA

2009-14 F-150 and Raptor Onboard Air System - 6350RC

2011-16 F-250/2011-15 F-350 Train Horn and Onboard Air System-230/6350RC

2007-18 Jeep Wrangler JK & JKU Bolt-On Dual Air Horn Kit - 101 / 6260RC

Optional Jkoba Dual Compressor Upgrade​

Model Hdoba-6350 Bolt-On Onboard Air System For 2014-2015 GM & Chevrolet 2500HD & 3500HD

Model Sdoba-6350 Bolt-On Onboard Air System For 2011-2015 Ford F-250 & F-350

2011-16 F-250/2011-15 F-350 Onboard Air System - 6450RC

Model Velo-Oba6350 Bolt-On Onboard Air System For 2009-2014 Ford F-150 & Ford SVT Raptor