2 – Zero Engineering Type 6
Everyone knows that the old school bikers knew how to look tough which is why the Zero Engineering Type 6 should make any list of the toughest bikes. This bike gives a nod back to the good old days with an Original Rigid Goose Neck frame and a simplistic design. After all, the toughest bikes don’t need a ton of bells and whistles. But that doesn’t mean you can’t dress up the design a bit and still look tough. The company offers customizations such as retro looking fenders; the customizations keep the design simple while giving it a little something extra.