Sport 26" Tandem Shimano 21-Sp Steel Frame Alloy Rims 36H / Smaller Rear Frame (3 Colors) Shimano 21 Speeds, 26" Wheels, Alloy Black Handlebars, Tandem Hi Tensile Steel Frame Front: 19 inch / Rear: 16 inch Bike Frames with Quick Release Seat Post for easy seat adjustment SHIMANO TOURNEY RD-TX31 BLACK DERAILLEUR with SHIMANO EF-50-3L/7R GRIP SHIFT INDEX SHIFTER ALLOY BLACK 28/38/48T 40T CRANKSET, SHIMANO TZ-21-7SP FREEWHEEL