Stainless steel air tank to mount on the right side fender support for 2008-Earlier HD touring models. 3" diameter, 11" length. (2) 1/8"NPT port. Enough of volume for front+rear air at 200psi. Same size tank as our new fast-up rear system and the fender support mount tank on El Grande systems. Includes mounting hardware, does not include any air fittings for the (2) 1/8"NPT ports.