woom 2 Freewheel Kit 14&rdquo; Aluminum Imported In the US, our woom 2 is supplied with two hand brakes and a coaster brake, and this optional upgrade allows your woom 2 to have a freewheel Compatibility: This optional 14 rear freewheel kit fits the Woom 2 Pedal Bike 14, Ages 3 to 4.5 Years. This is a complete and ready-to-go rear wheel kit. Tube and Kenda Small Block tires are already installed on Super light Soopa-Doopa-Hoops Aluminum rims; the freewheel sprocket is also installed Installation: Special tools are needed for the installation of this kit. The kit must be installed by a certified and professional mechanic