Rugby union legend Peter FitzSimons is among six players from across the codes who have vowed to donate their brains to science to promote the dangers of sporting concussion.

FitzSimons, who played seven Tests, was no stranger to big on-field hits during his celebrated career through the 1980s.

Peter FitzSimons has pledged his brain to further research into the dangers of sporting concussion. (9NEWS) (9news)

“Being in a rugby league tackle is like being in a Mini Minor and hitting a brick wall at 30km/h,” he told 9NEWS today.

The 52-year-old is one of a group of players, including league legend Ian Roberts and NFL player Colin Scotts, who have promised to give their brains to the Australian Sports Brain Bank after they die.

The Australian Sports Brain Bank is the first of its kind in the country. (9NEWS) (9news)

CTE is triggered by repeated concussions, such as those seen in contact sports. (9NEWS) (9news)

It’s hoped the bank, the first of its kind in the country and a partnership between Sydney’s Royal Prince Alfred Hospital and the University of Sydney’s Brain and Mind Centre, will help researchers understand more about Chronic Traumatic Encephalopathy (CTE) and how to better treat it.

“I realise after I pass away my brain can go and actually help the next generation of my children in this massive problem of brain disease. That excites me,” Scotts said.

Scotts has also committed his brain to the Bank. (9NEWS) (9news)

The bank aims to generate 25 pledges from athletes by the end of the year.

CTE is triggered by repeated concussions, such as those seen in contact sports, and is linked to depression and memory loss.