The minimalist design and the storage compartment in the down tube are probably the most obvious changes of the Top Fuel 9.9 X0 AXS compared to its predecessor. Slightly less noticeable: The bottom bracket is now threaded instead of pressed. The flat 65,5 degree head tube angle of the Trailbike von Trek gives the rider lots of confidence in challenging terrain. The combination of high stack and short top tube makes the riding position pleasantly comfortable. If you love flying down steep, rocky and loamy trails, the Trek Top Fuel 9.9 X0 AXS doesn't really suit you. Other manufacturers build Trailbike in the same price range that are more focused on descends. The Trailbike von Trek has higher quality wheels than the competitors with comparable prices. With 25 years warranty, nothing stands in the way of a long-term relationship.