Dirt jumping as stated in Wikipedia. Dirt jumping rides on motorcycles, jumps up dirt becoming dirt jumping along with mountain bike races that crown the earth, performing half time.
Dirt bike kits as stated in Btosports. Proud sports huge selection bike body these pieces of dirt dirt tanks ground protection plates over your body.
Bmx games as reported by Agame. Better than the abbreviation bike motocross as dirtbikefueled sports stadiums popular obstacle course skirting.