Freewheel: Shimano FW-7I and Shimano 14T-28T. Front Derailleur: Shimano FD-TZ50. Rear Derailleur: Shimano RD-TY50. The flying mountain bikes with 21 speeds contains the following features As well as a general check over of all fixings on pre assembled parts(wheels, crank, chain, etc).
eBay