I have dekeyed my son's speedfight 2 after it kept getting nicked at uni. Put a remote battery isolator and key fob starter in from an atv for £40. Its work well, been dragged a few yards a few times but painting the disc lock black has work a charm..its amazing that when they are orange or dayglow green they are spotted and smacked off but when black they are missed until they have gone a yard and the bike stops moving...they drop the bike and walk off.