What is the front disc brake size of Yamaha Ray ZR?What is the front disc brake size of Yamaha Ray ZR?0 Tathastu Rocks 2 Rep. May 9, 2016 Front disc brake size of Yamaha Ray ZR? Rajdeep Singh answered May 12, 2016 Please Login or Sign up.Connect with: Facebook Google ×Login Username or Email Address Password Remember Me Follow 0Question statsActiveMay 12, 2016Views998 timesAnswers1 answerFollowers0 followers