During the junior men's road race at the Glasgow World Championship, Belgium's Senne Sentjens decided to do some on-the-bike DIY mid-race in an incredibly risky move.
Having a loose front wheel, you'd normally expect a rider to pull over. Not Sentjens however, the 17-year-old instead took an Allen key from the mechanic in the team car and proceeded to tighten the wheel whilst still pedalling. Something we would not recommend you try at home!
Watch it for yourself in the video below!