I recently spent a day riding Harley-Davidson's 2006 motorcycles. Naturally, I spent most of my time on the bikes that were new for 2006, including the new Dyna models, notably the 35th Anniversary Super Glide and the Street Bob. If you have read our preview of the 2006 Harleys, you know that Harley substantially changed the Dyna series motorcycles for 2006. The frame has been revised with a 29-degree steering-head angle, 49mm fork stanchions, a 160/70-17 rear tire and 17-inch wheel replacing the 150/80-16 tire and 16-inch wheel used on previous Dyna models, a stiffer swingarm and beefier one-inch diameter front and rear axles. Perhaps the biggest news is the new six-speed transmission, which brings new engine cases, quieter helical-cut gears, and revised shifting components to reduce shift effort. The clutch has been redesigned to reduce effort.