"Everyone was talking about what tricks they were going to do and stuff, and I didn't have any option. I'm a racer at heart and that's what I do and my best trick was just a right and left turn. That's it."
The Dual Speed and Style event is a head-to-head battle on a specially designed course, with riders judged on their speed and their tricks.
Slavik progressed through the heats, quarter-finals, semifinals and then defeated Kyle
Strait (US) in the final.
Before this week, Slavik had not competed at any Crankworx events for five years and explained he was primarily a four-cross rider.
Four-cross is a mountain bike discipline not featured at any Crankworx events around the world.
"My last Crankworx was back in 2011, so I had like five years break and it is good to come back," he said.
"I had a few projects with Red Bull here, with photo shoots, and I'm also fly fishing a lot so we had some fly fishing projects here."
He said he hoped to get out for a fish today. "Hopefully on Friday evening I will go to Hamurana and put some flies in the water."
Meanwhile, Jill Kintner (US) defeated a small women's field to win her first title in the event. It was the first time anywhere in the world a women's competition was held as part of the Dual Speed and Style event.
"I'm glad me and Casey [Brown] could represent the women out here," she said.
"It is a pretty fun event."
The flowing course used for the Mons Royale Dual Speed and Style event was built by Rotorua's Empire of Dirt.
?Results:
Men: 1 Tomas Slavik (Czech Republic), 2 Kyle Strait (US), 3 Adrien Loron (France).
Women: 1 Jill Kintner (US), 2 Casey Brown (Canada).
Main events still to come at Crankworx Rotorua:
Crankworx Rotorua Air DH, tomorrow (2.30pm-5pm)
Rotorua Pump Track Challenge, tomorrow (7pm-9pm)
Crankworx Rotorua Slopestyle, Saturday (3pm-5pm)
Crankworx Rotorua Downhill, Sunday (2.30pm-5.15pm)