ATLAS THROTTLE LOCK TOP KIT for Royal EnfieldWill the ATLAS fit my BMW motorcycle? Steps to determine fitment First, is there enough room for the ATLAS? All you need is a gap of 0. 1" (2. 5mm) or greater between the grip and the throttle housing. That's roughly 3 bank cards thick. You'll want the Bottom Kit If theres a heated grip wire that comes out the top half of the rubber grip flange. If you have more than 1. 5 inches (38mm) of clearance between the inner plastic throttle tube (under the