Wow that really sucks, sorry to see that. From looking at the video I’m assuming the R1 locked up front and slid under your son? If that’s the case it seemed very early approaching the turn for that to happen. strange.
I can honestly say I know how it feels. In one of my 600cc superstreet races I got taken out from behind going down the hill into turn 5 at Willow Springs. I was really pissed. The rider came up to me in the pits and said “sorry” but that didn’t fix my wrecked bike. It’s never fun.
Hope your son recovers quickly.
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