Thrasher's: How to Build a Pump BumpKanfoush is back, mixing ‘crete to spice up the lines at an Oakland DIY. Pitch in some cash with the homies and get pouring. Keep up with Thrasher Magazine here: http://www.thrashermagazine.com http://www.facebook.com/thrashermagazine http://www.instagram.com/thrashermag http://www.twitter.com/thrashermag