Jaime Busto - Repsol Honda made it an all-Spanish podium for the fourth time in a row and claimed third in the championship with an impressive second-lap total of five leaving him three marks behind Raga and pulling him nine clear of fourth-placed James Dabill - Gas Gas from Britain.
Spain's Jeroni Fajardo - Vertigo took fifth a further nine marks behind Dabill and three ahead of Germany's Franz Kadlec - Gas Gas who recorded his best finish of the series in sixth.
Home hero Matteo Grattarola - Gas Gas gave a big turn-out of Italian fans something to cheer about with his seventh-placed finish matching his season's best performance as Spain's Jorge Casales - Beta, his compatriot Albert Cabestany - Sherco and Japan's Takahisa Fujinami - Repsol Honda rounded out the top ten.
Bristow started TrialGP Italy with her sights set on another maximum points haul and after lap one she seemed to be on-course to keep her remarkable win-streak going with a one-mark lead from Bauml.
However, a maximum on section two second time around put Bristow almost immediately on the back foot and following a three just two sections later the damage was done. Despite a faultless eleven-section run-in to the finish Bristow was left watching helplessly as the German matched her clean for clean to win by four marks.
Spain's Sandra Gomez - Gas Gas ended the day two marks behind Bristow in third to claim second in the title fight ahead of Bauml. Britain's Jess Brown - Scorpa took her best finish of the championship in fourth after losing a tie-break with Gomez before an eleven-mark gap back to fifth-placed Huldeborg Barkved - Sherco from Norway.
"My first lap was good and the second lap was even better, but I didn't expect to win," says Bauml. "My goal this year was to finish in the top three in the championship and I have so I'm very happy."
Iwan Roberts - Beta wrote himself into the record books by becoming the first ever FIM Trial2 World Champion with an assured performance, although after a fantastic first lap total of just five nerves appeared to get the better of him on lap two.
Starting the second half of the Trial with a six-mark lead over Toby Martyn - Vertigo, Roberts then picked up two maximums in a row which dropped him to second, four marks behind his fellow Brit.
Spain's Gabriel Marcelli - Montesa consolidated his second place in the series with third on the day a further three marks adrift and his compatriot Francesc Moret - Montesa, despite finishing sixth, managed to cling onto third in the championship by two points from Martyn.
In Trial2 Women Jule Steinert - TRRS from Germany took her first win of the campaign with an eight-mark victory, but it was Spain's Neus Murcia - Beta who clinched the title by six points after finishing third on the day behind Germany's Sophia Ter Jung - Beta.
Spain's Carla Caballe - Gas Gas, who had been second heading into the final round, dropped to third in the standings behind Steinert following her fifth-placed finish.
With the individual series now finished, all attentions now turn to next weekend's team event, with the FIM Trial des Nations taking place in Baiona, Spain.
GP Italy
1 Bou Toni - SPA 18
2 Raga Adam - SPA 27
3 Busto Jaime - SPA 30
4 Dabill James - GBR 39
5 Fajardo Jeroni - SPA 48
6 Kadlec Franz - GER 51
7 Grattarola Matteo - ITA 58
8 Casales Jorge - SPA 61
9 Cabestany Albert - SPA 62
10 Fujinami Takahisa - JPN 63
11 Gelabert Miquel - SPA 68
12 Farre Arnau - SPA 69
13 Price Jack - GBR 71
14 Ferrer Alexandre - FRA 75
15 Bincaz Benoit - FRA 81
16 Gubian Loris - FRA 102
Top 10 Rider Standings
1 Bou Toni SPA 192
2 Raga Adam SPA 164
3 Busto Jaime SPA 133
4 Fajardo Jeroni SPA 119
5 Fujinami Takahisa JPN 112
6 Dabill James GBR 102
7 Cabestany Albert SPA 102
8 Casales Jorge SPA 71
9 Kadlec Franz GER 66
10 Grattarola Matteo ITA 58
