Injury has forced V8 Ute racer Mason Barbera to postpone his Kumho V8 Touring Car series debut at this weekend's Shannons Nationals round at Phillip Island.
The 17-year-old Queenslander has failed to secure medical clearance to compete after suffering heavy bruising in a high speed V8 Ute crash at Sandown last weekend.
Meanwhile, the Kumho Series title fight is set to heat up at Phillip Island with teenagers Liam McAdam and Alex Rullo split by just five points.
The 15-year-old Rullo recored a clean sweep of victories last time out at Queensland Raceway to boost his title hopes.
The Kumho V8 Touring Car Series joins a bumper schedule which includes the Porsche GT3 Cup Challenge, Australian Formula 3 Championship, Radical Australia Cup, IROC Challenge, Super Six Touring Cars, Sports Racers and Superkarts.
A total of 161 competitors will compete across the categories during the weekend which represents the largest Shannons Nationals entry of the season.