Together with 19-year-old Brady Fielder, who was named the 2019 PBR Rookie of the Year at the grand final in Townsville on the weekend, the pair have given their home town Clermont a deserved reputation for bull-bucking supremacy.

While the event honours at the weekend went to Hunter Valley rider Lachlan Richardson with 2018 world champion, Brazilian Kaique Pacheco taking second, Kleier did enough to retain his title in front of a sold-out crowd.

Being named the 2019 Australian champion gave Kleier, 21, a hat trick of wins, following his 2018 championship and 2017 PBR Rookie of the Year titles.

He grew up on his family's 22,000ha beef property, studying via distance education before attending boarding school at the Rockhampton Grammar School, where he took part in Rodeo School and having his first bull ride at the age of 14.

It's not surprising, given that his parents breed bulls for the competition.

This year they have witnessed some epic battles between their son and Brady Fielder, who was sitting at number two on the Australian standings for much of the year, but Aaron's grit and determination saw him maintain the number one spot on the national rankings for most of the year.

Fielder finished as number three in Australia soon after returning from Las Vegas where he was invited to compete at the PBR bull riding world finals.

The two-night competition in Townsville saw 17 of Australia's top riders, as well as five key internationals, battle it out for a share of a $100,000 prize pool.

Tamworth rider Troy Wilkinson secured third place for the weekend. On his retirement ride and last night of competition, New Zealander Fraser Babbington finished fourth.

The overall 2019 PBR Australian stock contractor of the year title was also announced at Townsville and it was the second year in a row that the Hunter Valley-based TnR Bucking Bulls took the win home for NSW.

"Our bulls had had a big week, travelling further than the North Queensland based Brandenburg and Dittman bucking bulls, so for them to come out on top is an awesome result," Mitch Russell said.

"(Business partner) Edward Throsby and I couldn't be happier. We got them on the road early this week to avoid the road closures and to escape the fires in the Hunter Valley, that came right onto our properties. The nice rest in Townsville before competing this weekend has done them good."

The Bucking Bull of the Year was Dittman's Fully Locked N Loaded.