The Roland TD-50KVX is a configuration of the TD-50 kit that includes the new KD-220BC 22" kick drum instead of the KD-140BC that comes with it the TD-50KV kit. Edrumcenter will get you the best price on this kit and also update your module to the latest OS and add extra user kits. 

• TD-50 module with Prismatic Sound Modeling and all-new on board sounds
• 14-inch PD-140DS digital snare with a high-resolution multi-sensor system for unparalleled dynamics and accurate positional detection
• 18-inch CY-18DR digital ride provides accurate positional sensing and improved dynamics using an innovative multi-sensor system
• Additional cymbal pads include VH-13 V-Hi-Hat, CY-14C crash, and CY-15R crash/ride in Black with Black underside
• One PD-108-BC rack tom pad and two PD-128-BC floor tom pads
• KD-220BC 22" Kick Drum 
• Convert your acoustic bass drum to an electronic kick pad with the optional KD-A22 Kick Drum Converter
• Play your own WAV samples via an SD card
• USB 10-channel audio out for multi-track recording through a single USB cable
• Stereo XLR master output and eight TRS direct outs provide balanced connections to a PA
• Metronome with Quiet Count plus audio recording/playback functions for practice
• Large MDS-50KV drum stand w/ 3 RM-REMAATS tom mounts

Get the best price and free shipping at Edrumcenter. No sales tax outside of TN.