Yamaha DTXpress/DTXplorer/DTXtreme

Hi

Yes the BD pad attatches to the horizontal rack bar by means of an 
upright steel pole (same diameter as a standard 'Pearl' type tom 
arm), the BD pad having the same dimensions as all the other pads, it 
too tightens via a standard drum key.  The difference with the BD pad 
is that there is  s/steel plate that descends from the bottom of pad 
to allow the DB pedal to attach.

Cheers

Drew