SHIELD™ XPLUS 5755 FAST, CONVENIENT AND COMPLETELY RELIABLE The wait is over: our industry-leading XPlus key system is finally being introduced for frame locks. XPlus is more comfortable to use and even safer: a real win-win situation. In addition, it allows the integration of OEM frame locks into the one-key security system with our highest quality Granite XPlus series of shackle, folding and chain locks. Perfect for the new generation of electric bikes that are conquering our cities.