Zac Efron put his bulging muscles on display while golfing shirtless with his look-alike brother, Dylan Efron.

The “Iron Claw” actor showed off his tan sculpted physique while swinging a golf club in a video posted on Instagram Tuesday.

The ripped “High School Musical” star, 37, wore a gold necklace and sunglasses for the outing at sunset.

Zac’s equally fit brother, Dylan, 33, joined him for a ride in the golf cart before taking a series of swings on the green.

“Sticks,” Zac captioned the post, adding the title theme from Owen Wilson’s Apple TV+ series, “Stick,” on the video.

Fans of the Efron brothers gushed over the shirtless golf video, with one Instagram user calling it a “fever dream.”

“So happy there’s not a limit on how many times Instagram allows me to replay a video,” another person quipped, while a third wrote, “My brain stopped working for a good 20 seconds.”

“My god there are two of them,” marveled another, while a fifth netizen remarked, “for the first time I’m not bored watching someone play golf 😍.”

The brothers have been spending quality time together this summer. They were previously spotted enjoying a summer day at the lake with Dylan’s girlfriend, Courtney King.

A video from the July 1 Instagram post showed the famous siblings exchanging matching white cowboy hats while hanging out on a boat.

The “Baywatch” star was also seen in photos chilling on the dock with Dylan, riding on a wakeboard and wearing a towel around his waist.

Though the “Hairspray” actor is known for his fit physique, he has relaxed his regimen a bit since starring in 2017’s “Baywatch.”

“That ‘Baywatch’ look, I don’t know if that’s really attainable,” Zac told Men’s Health in a 2022 interview.

“Like, it’s fake; it looks CGI’d,” he continued. “And that required Lasix, powerful diuretics, to achieve. So I don’t need to do that. I much prefer to have an extra, you know, 2 to 3 percent body fat.”