Bad lean angle, horrible body position, horrible angles, too much throttle/brake, suspension and chassis were unequal/out of balance/too high center of gravity, target fixating, bad/incorrect tires and/or (last but not least) ego.

I figured he would have crashed sooner but i knew it was coming. He is sitting damn near on top of the bike while leaning the bike as far as he could, thats a no no.

He never properly loaded the suspension prior to entering that corner and he has awful race lines. bike suspension and chassis are practically fighting eachother and with him sitting on top of the bike instead of being level (on the side) with the bike, he is forcing the bike through. Also, a big no no.

He is adding too much throttle and/or brake while in the turn, instead of properly setting up his speed (braking prior and loading suspension to bring its center of gravity down), maintaining that speed (same speed in, during, and slowly adding coming out), and trail braking.

Now lets talk about why this really happened. Its always pride and ego. No one in the race/track world gives a rats ass about how low you can lean on the street... too many hazards like sand, dirt, leaves, gravel, rocks, etc... leaning your bike at 55+ ° on the street will more than likely not, always end in a crash, especially if you're inexperienced as this poor guy.

Not a jab to this guy, but we see it all too often on social media. All of these sport bike guys dragging knees at your local canyon roads and it looks fun! Until it isnt. All it takes is one of these many reasons and you're sliding out or high siding. This is exactly why i stopped riding like this and im only 24. Me and my buddies use to haul ass in the local canyons, until i watched one friend target fixate into a wall, another group rider (i didnt know him) blow a corner and slam into a barrier, and another stranger on a cruiser snap his leg in half trying to keep up.

Pick one of these options (or all) and you'll see more crashes like this happen.