The GT Sprint Challenge in the Ultimate Cup Series has several sub-categories: UGTFREE, UGTX, UGTC and UTouring.
UGTFREE : The UGTFREE class brings together Grand Touring cars with a right performance balance to maximize performances.
UGTX : The performance capabilities of the UGTX cars will be inferior to that of UGT and UGTFREE cars.
UGTC : UGTC class is for GT cars that raced in one brand series or in Challenges within their respective regulations.
UTouring : This class is designated for TCR approved cars or equivalent on application with the promoter.