In 2019, in Glendale, Cianciarulo earned his 7th career win during his time in the series and his 1st win of the 2019 season. He came close to winning the 250sx West championship, but ultimately lost the championship to Dylan Ferrandis after a crash late in the final race.
However, Cianciarulo later won his first professional championship in the 2019 Lucas Oil Pro Motocross Series finishing with 519 total points. He is now contracted to ride for Team Monster Energy Kawasaki aboard a KX450 in the 450 class. He also is moving on from his previous career number 92 to 9.
During the 2019 Monster Energy Cup, Cianciarulo's first professional race in the 450 class, he placed 1st overall. In the three main events, Cianciarulo placed 2nd, 2nd, and 1st to solidify his spot at the top of the podium.