Since the R18 concept's philosophy is leaving out anything ... 18 inches in back - wear rubber from in BMW Motorrad's historic tire partner, Metzeler. The only ornamental item on the bike is ...
BMW R20 concept unveil, details At the heart of the R20 concept lies an air-cooled 1,802cc Boxer engine taken from the R18 . However, BMW has bumped up the capacity to 2,000cc for the R20 concept.
BMW’s enormous R18 mega-boxers have had some very minor tweaks, aimed at meeting the tighter Euro 5+ emissions rules. So, the ...