In mere minutes you can swap to the GT All Terrain kit, and charge on where the road ends! You will see footpaths as purely optional, gravel tracks will become rally stages, and that group of grassy hills will morph into a never-ending set of rolling surf breaks! The 150mm (6inch) kit is the newest Kit. It has a smaller, low profile tyre on the same hub and converts your board to a grippy lower AT Racing Board, for light terrain and especially for bad or good streets just awesome. Maybe the choice for all the street racers out there, who want the extra grip of AT tyres on streets plus comfort but lower to the ground. You will love this one. Shipping is beginning of June!