This is the new, wider chassis of the BAC Mono. Máté Petrány2/11/16 8:29amFiled to: BAC MonoBAC216EditPromoteShare to KinjaToggle Conversation toolsGo to permalinkThis is the new, wider chassis of the BAC Mono. It gives you as much as 56mm in extra interior room without changing the looks. Yes, you can have another cheeseburger. Photo credit: BACContact the author at email@example.com.