Billy Bonkers – FoldingThis extremely light tyre, not only rolls quickly, but it is also very playful and agile. At the same time, Billy Bonkers offers its riders a forgiving landing, even when things in the air dont go exactly as planned.It’s tread design is produced for maximum traction on crushed gravel and hard dirt. The finely divided blocks multiply the gripping edges, while in the middle, small ramps help ease roll-off and make the tyre even faster. The result: more airtime.