9 years & up. Standing over 3 feet high with 19+ feet of twisting, turning track, the motorized Loopin' Lightning provides a building experience that's just as thrilling as its performance. This set includes 615 colorful K'NEX pieces, including 2 coaster cars, motor and track. Follow the color-coded instructions to build this exciting thrill ride s[Read More]

The K'NEX Dragons' Drop Coaster Model# 13075 lets you build a hanging roller coaster that's over three feet high. Features:Motorized chain lift Two coaster cars Includes over 800 pieces Instructions for two models

Collect and build all four rides in the Amusement Park Series -- Ferris Wheel, Speed Coaster, Octopus Whirl and Drop-N-Swing. Each set is motorized for exciting thrill ride performance. Each set requires two "AA" batteries, not included. 432 pieces.