Stark Varg EX takes electric power higher than ever
Swiss rider Jiri Zak and the Stark Varg EX have set a new Guinness World Record, reaching 6,721 metres on Ojos del Salado aboard a stock electric enduro.
Stark Future and Swiss rider Jiri Zak have set a new Guinness high-altitude world record* aboard the Stark Varg EX electric enduro, pushing an electric dirt bike higher than any motorcycle has officially gone before.
Zak and the Stark team reached 6,721 metres on Los Ojos del Salado, the world’s highest active volcano. They did it riding a completely stock Varg EX.
To keep the numbers watertight, the team calibrated and certified all GPS equipment on Thursday, November 27. Zak made his run on Sunday, November 30, hitting the planned altitude without drama. The final figure will be confirmed once certified GPS logs, witness statements, and supporting data go through independent verification.
Ojos del Salado is the real test bed for altitude attempts: thin air, sub-zero temperatures, brutal gradients, and terrain that changes by the hour. It is why Porsche, Yamaha, Jeep and others have been coming here since the early 2000s. Throw in an active volcano for extra drama - located in a geologically active subduction zone - and you have possibly the toughest place to ride a bike this side of the moon.
Jiri Zak, rider and world-record holder, said:
“Two years ago this was just an idea — go high, do it on electric, go where combustion loses power. Ojos is unforgiving. One mistake and you pay for it. That’s why you go with people you trust and a bike that still pulls in thin air.”
Anton Wass, CEO and Founder of Stark Future, added: “This was never about the number alone. It’s about proving electric isn’t a compromise. The Varg platform can work on the edge of the atmosphere and give riders the control they need in hostile conditions. Next stop? The moon.”
The ascent was done on a standard, out-of-the-box Varg EX. A specialist mountain logistics and production crew supported the attempt, spending several days acclimatising and studying weather windows before the final push.
The filming plan served two roles: capturing the story and providing verifiable evidence. The crew documented Zak’s line choice, his energy and traction management, and the realities of keeping the battery and power electronics within temperature limits in freezing, low-pressure air.
Back at basecamp after the run, Zak said: “I’m back from the West Summit and back with the team. I’m proud of what we’ve done. The toughest part was the traverse to Argentina Pass — the balcony had disappeared, wind and snow wiped out my old track. Nature took the path back.”
- Guinness World Record - Pending review
- Altitude WR: November 30, 2025
- Achieved: 6,721 m
You can find out more about the Stark Varg range of bikes on the official website.
Find the latest motorcycle news on Visordown.com
In This Article
Simon (AKA Toad) has been working within the motorcycle industry for more than twelve years, and a member of the motorcyclist family since birth. Growing up around British-built single and twins, it was inevitable that a life on two wheels was on the cards, from a very early age!