Kawasaki's original ZX-10R Ninja cost them tens of millions to develop back in 2004. It was one of the lightest and most powerful litre sportsbikes of the era and the first with a 1:1 power-to-weight ratio (180 horsepower and 180kg)
Even so, a young owner on the Kawasaki Ninja internet forum decided he could improve on things...
Shervin Rezaiy was obsessed with weight saving. It started with innocent enough modifications to things like number plates and exhausts. Shervin would meticulously weigh every part before and after, noting every single gram of weight saved.
After creating his own exhaust pipe, it was clear to members of the Ninja forum that Shervin wasn't what you'd call an expert engineer.
Then things took a turn for the worse...
Shervin was keen to modify the ram air system on his Ninja by creating additional air scoops on the fairings. It didn't take long for people to realise something wasn't quite right.
Here's when things really went a bit nuts.
Yes, that's a massive hole in the frame.
IN THE FRAME!
Shervin cut this to allow more air to enter the newly enlarged airbox. Naturally, the Ninja forum members tried to explain the fundamental safety issues inherent with cutting a huge damn hole in the frame of your motorcycle.
We're not sure how the story ended as Shervin was banned after an (understandable) online shit storm occurred.
We assume the thing must've snapped in half at some point.
You can read the entire car crash of a thread here