BMX rider Jack Dumper refuses to let his disability define him.

The 19-year-old from Bristol, in southwest England, was born without the lower part of his left arm. But that doesnt stop him from performing daring stunts on his beloved bike , as seen in the video above.

He simply ties his left sweatshirt sleeve to the left handlebar for stability and pulls off tricks just like his peers. Ive always tried to keep a positive attitude towards it, the teen told HuffPost. Its never held me back, so Ive just embraced it.

Dumper began riding BMX about 3 years ago after loving the look of the sport but never taking part.

I just jumped straight in and threw myself at every obstacle, he said, revealing that pulling moves felt more natural after figuring out the sleeve trick.