This features the beast model 230 black ABS triple train horn on a flat rack mount and three tuned high-impact ABS trumpets 17.5 inches, 14.5 inches and 11.5 inches in length. Requires 40 percentage less clearance than other full size train horns. Trumpets can be separated from the bracket for easier installation in vehicles that could not otherwise fit full sized train horns. Includes a full onboard air system with 100 percentage duty cycle air compressor, 3 gallon tank, bonus tire inflation kit with storage bag. This product can be upgraded by adding an BlastMaster valve upgrade (part number 6880).