His only title came in the French Karting Championship in the Cadet class in 2015 against future Formula Renault Eurocup champion Victor Martins.

In 2020 Henrion announced that he would drive for the family-run team Gillian Track Events GTE in the Formula Regional European Championship.

[10] Henrion made a substitute appearance for G4 Racing in 2022, replacing the injured Axel Gnos at the Red Bull Ring.

[12] He would start out the campaign in brilliant fashion, as two pole positions were converted to two lights-to-flag victories at the season opener in Le Castellet.

The season began positively, as Henrion and Gerbi managed to keep their cool during a chaotic opening race in Barcelona to take their first victory of the campaign.

[24] At the season finale held in the Algarve, the team took one further point as a result of Gerbi's maiden pole position in qualifying, and although the Algerian would be hit into the gravel by Torsten Kratz whilst in the lead of a rain-intensive race, with Henrion being unable to make up the lap lost thanks to the car's recovery from the sand trap, a second place for title rivals CD Sport meant that Henrion and Gerbi had taken the championship with a margin of four points.

[25] Remaining with Virage for the third year running, Henrion was able to step up to the European Le Mans Series, once again partnering Gerbi and being joined by Bernardo Pinheiro.