Jamie Whincup has no interest in exploring more sportscar opportunities, pledging his allegiance to remain in Supercars.

The record-breaking six-times Supercars Championship winner has killed off any plans of broadening his GT horizons fresh after claiming the Bathurst 12 Hour alongside Craig Lowndes and Toni Vilander.

Double-stinting at the finish to guide the Maranello Motorsport Ferrari 488, Whincup enjoyed the perfect GT debut alongside 2014 12 Hour winner Lowndes and factory sports car ace Vilander.

“Supercar racing, that type of racing, that is me,” Whincup, who celebrates his 34th birthday today, told Speedcafe.com.

“Everyone in the same thing, it’s the human element just coming down to who does the best job on the day.

“It’s proper cut throat.”

Whincup said that while he would accept a return offer to the Bathurst 12 Hour, he says 15 Supercars events a season satisfies his competitive appetite.

“For me, 15 races a year is a lot of racing and it’s a good balance in my life,” he said.

“I’ve got plenty else going on outside of motorsport that doesn’t allow for me to do any more.

“I think I’d come back and do this (Bathurst 12 Hour). I’ve just been waiting for the right opportunity.

“With Triple Eight teaming up with Maranello, I felt like that was the right opportunity.

“I felt like I was in a good place.

“This is fantastic but I certainly won’t be going away from what I normally do to do more GT racing.

“Shane van Gisbergen (Whincup’s Red Bull Holden Racing Team team-mate) just does twice as much racing as me. He does a heap of GT stuff and Supercar.”

Whincup also admitted that he was not keen on travelling on long haul flights on a semi-regular basis to compete.

“I don’t like travelling. I’m a bit patriot and scared of losing my passport and never getting back in Australia.

“It’s not on my agenda to go overseas for some racing.

“I’ve looked at doing a Brazil Touring Car race but didn’t go ahead.

“The Race of Champions was good, I’ve done that and if it lines up I would consider something.

“But I just can’t leave and disappear for a week or two and leave my other commitments outside of motorsport.”

Whincup explained that his foray into GT racing opened his eyes to a different challenge.

“The car was bullet-proof,” Whincup said.

“It’s really good to drive with the Euros. They know the cars and they are fast and give you a massive challenge to step up and be better yourself.

“It’s refreshing to get out of your comfort zone.

“The pit stops, how the car handles and how they go about racing is just so different.”