15% off all Building Sets! Use code "BUILD15" at Checkout!
2-in-1! Build a supersonic jet, then build a heli-plane with rotating propellers.
Let your imagination soar with the 35 Model Ultimate Building Set!
Use Classic K'NEX pieces to build the 4 Wheel Drive Truck with lights!
Build anything you can imagine for a year with the 52 Model Building Set!
Build anything you can imagine with the 521 Super Value Tub!
Build anything you can imagine with the 70 Model Building Set!
Build your artillery and establish your army with the Combat Crew 5-in-1 Building Set!
Take an adventure into space with the Cosmic Quest building set!
Cool extreme sports builds - including a hang glider, jet skier, surfer and more! 10 building ideas! 250+ pieces - all Classic K'NEX pieces. Made in USA.
Take on the ultimate K'NEX building challenge with the Grandfather Clock building set!
Use Classic K'NEX pieces to build a helicopter with working rotor! Combine witn plane and truck to build a space shuttle!
Travel faster than the speed of sound with the Land Rocket Building Set!
Use Classic K'NEX pieces to build a plane and fly away! Combine witn helicopter and truck to build a space shuttle!
2-in-1! Build a revvin' racecar, then build a powerful ATV.
Collect & Build Robo-Smash in the Robo-Creatures Series - motorized for exciting mechanical movement!