Go Speed RacerPosted: 1 year ago by 2manyusernames Markus Stoeckl just broke the World Speed Record for series mountain bikes, hitting an incredible 130.7mph (more than 210kmh). Read that again. 131 miles per hour on a mountain bike! He devastated the previous record by 14 mph. It took place on a 2000m stretch at a 45 degree run in the Chilean Alps Comments: 4 Score: [-] 190 [+].