SRO Motorsports Group has become a majority shareholder in WC Vision, with Pirelli World Challenge set to be fully incorporated into the organization’s global GT racing platform.

The news was revealed Friday evening and builds on a relationship formed more than two years ago, which initially saw SRO founder and CEO Stephane Ratel take a non-majority stake in the company.

Terms of the purchase have not been disclosed.

“I am very pleased to be adding the Pirelli World Challenge in totality to our global business,” Ratel said.

“This addition was the final piece in our plan to provide global GT racing to our drivers, teams and manufacturers around the world. Our next step will be to meet with our PWC paddock members and discuss the future together.”

According to a release from the SRO, PWC’s North American leadership and management will not change, with Bob Woodhouse, Peter Cunningham, Jim Haughey and Greg Gill all remaining as members of the board.

The purchase follows a two-year period where the two organizations worked closely together, with PWC adopting SRO’s global Balance of Performance system in 2016, and SRO playing a part in the launch of the SprintX format.

SRO and WC Vision have also co-promoted the California 8 Hours Intercontinental GT Challenge round at WeatherTech Raceway Laguna Seca.