Tequila Patrón announced on Monday that following the conclusion of the 2018 racing season, it will withdraw its existing involvement in the IMSA WeatherTech Sportscar Championship, both as a team backer and as the North American Endurance Cup sponsor.

IMSA President Scott Atherton issued a response to Patrón’s announcement shortly after it was released, commending the brand for its tenure with the series.

Partnering with Extreme Speed Motorsports over the past 13 years, Tequila Patrón has supported programs in a list of disciplines including the American Le Mans Series, IMSA, and the Indianapolis 500 as well as global GT and prototype competition.

“On behalf of the entire Extreme Speed Motorsports organization, it has been an honor to represent such an amazing brand for the past 13 years,” said ESM Co-Owner/Driver Scott Sharp. “I have the deepest gratitude for all of [Patrón CEO] Ed Brown’s support. Together we have tackled various challenges, won races at each step, and built ESM into such an incredible team. Simultaneously, it has been thrilling to watch Ed and his team build the Patrón brand in a meteoric fashion and along the way become an icon in the motorsports world! We will miss not carrying the now infamous green and black livery, but the same passion for excellence will remain!”

Meanwhile, ESM will continue its IMSA efforts in 2019 as it is “actively pursuing sponsors” to partner with for next season