Honda (American Honda Motor Co.) is recalling certain model year 2014 Honda CBR1000S motorcycles manufactured December 9, 2013, to March 28, 2014, and 2015 Honda CBR1000S motorcycles manufactured October 20, 2014, to February 27, 2015. The affected motorcycles may have been built with an improperly manufactured rear shock absorber. The nut on the damper rod for these shock absorbers may loosen, resulting in a loss of damping and the possible disassembling of the shock.