My opinion on the 2019 r1 is it's awesome! I had a few bolt vibrate out to start with but that's no biggie as I should have checked them myself. Now I’ve had to replace the air intake 2 weeks ago. Now it’s cracked again. I suck at wheelies so I come down really really hard which snaps the air intake in two. I don't blame Yamaha... I blame myself. My old 2001 r1 witch I had for 10 years never had this issues. I could slam it down again and again but it would never break. So I need to figure out some way to reinforce this one.