ACK Attack targets first official 400 mph motorcycle run in Bolivia

The Top 1 ACK Attack will head to Bolivia in October for the 2026 Bolivia Speed Trials, where its team will try to make motorcycle history on a 19-mile salt-flat course near 12,000 feet. If successful, the run would mark the first official motorcycle pass above 400 mph.

Why it matters: - The Top 1 ACK Attack is chasing a milestone no motorcycle has officially reached: 400 mph. - A successful run would reset the ceiling for motorcycle land-speed racing and close a 16-year gap since the current FIM record was set. - The attempt also caps nearly 20 years of development behind the streamliner.

What happened: - The 2026 Bolivia Speed Trials are scheduled for October on the Salar de Uyuni, the world’s largest salt flat. - The event is drawing some of the world’s fastest wheel-driven vehicles to pursue official FIM and FIA world records. - The planned course is 19 miles long and sits at nearly 12,000 feet elevation. - The Top 1 ACK Attack, a twin-engine turbocharged streamliner, will lead the motorcycle effort. - Rider Rocky Robinson will return for the attempt. - Designer and team owner Mike Akatiff said the team will try to become the first motorcycle in history to officially exceed 400 mph.

The details: - Rocky Robinson set the FIM absolute motorcycle land-speed world record at Bonneville in 2010 at 376.363 mph. - That record still stands 16 years later. - The Salar de Uyuni offers a straight 19-mile course that is 110 feet wide on hard salt. - The high altitude reduces aerodynamic drag because the air is thinner. - The site’s size provides the acceleration and stopping distance needed for 400- and 500-mph machines. - Mike Akatiff, Jamie Williams and Jim Knapp are underwriting the event. - Top 1 Oil is supporting the effort. - Akatiff said the Uyuni conditions may finally give the team enough distance and room to test whether a motorcycle can officially break the 400 mph barrier. - The Top 1 ACK Attack attempt will also serve as the climax of the documentary series “400 MPH: The Last Run.” - Tory Belleci of MythBusters hosts the series, which uses nearly 20 years of footage from the bike’s journey from a California workshop to Bonneville and on to Bolivia.

Between the lines: - Bolivia is being chosen for a reason: the salt flat’s length, width and elevation create a rare combination for extreme-speed runs. - The project is as much a technical endurance story as a record attempt, with the same team returning after years of incremental development. - The documentary angle suggests the 400 mph push is being framed as both a sports milestone and a long-form media event.

What's next: - The team will make the attempt during the October speed trials. - Success would give motorcycle racing a new official top speed and likely set up a new benchmark for future land-speed challengers. - The documentary series will culminate with the Bolivia run.