Get ready for the ride of your life with the Firestorm Freefall Coaster Building Set from K’NEX! This roller coaster stands over 2.5 feet tall and boasts over 18 feet of looping, diving track. The set contains over 670 K’NEX pieces including an exclusive hanging coaster car, motorized chain lift, track, and of course our famous rods and connectors. The color-coded instructions make it easy to build this exciting thrill ride before you turn on the motor and bring the whole thing to life. Instructions for a second incredible model are available for download. This product is for ages 9+. Thanks to K’NEX, we got to try out the Firestorm Freefall Coaster Building Set. My husband and my two boys sat down and churned this puppy out in no time. This set really does include a ton of pieces (674 to be exact) but the instructions are pretty straightforward making it a breeze to assemble (granted a child on his own may have some issues, but we did it as a family). Check out our video below!