Belgian rider Genon won the headline stop on the newly-formed tour in Montpellier back in May and took home the trophy again in Vallnord with another dominant display.
He fought off competition from Antoine Bizet, who finished second, and Logan Peat who completed the podium in third, to move top of the FISE rankings.
Genon went into his final run not knowing the score of his closest rival Bizet but left no doubt of victory with a huge score of 97.33.
And the win comes at the perfect time for Genon with the first event of the FMB Diamond Series kicking off in Les Deux Alpes on Wednesday.
In the BMX Spine event there was a hard-fought battle between Daniel Dhers and Alex Coleborn but the former came out on top in the end by just 0.67 points.
Coleborn set the pace in qualifying but, after Dhers had recorded a high score of 92.67 in the finals, he narrowly missed out on the title.
The result leaves the pair even in the overall standings after Coleborn beat Dhers to victory in the opening event of the World Series in Montpellier.
Meanwhile, 16-year-old wakeboard sensation Daniel Grant followed up his win in Montpellier with another victory in the Wakeboard Pro event in Vallnord.
The world number one fully lived up to his ranking with a two-point win over Ben LeClair in second and Antoine Allaux in third.
Elsewhere, Julien Cudot beat Romain Godenaire to victory in the Roller Spine event with CJ Wellsmore rounding off the podium in third. Click here for Cudot's winning finals runs and a stunning backflip drop-in as an added bonus.
The next stop on the FISE World Series is in Malaysia and starts on Thursday 4th September.