Frameset Sizes: 18, 19.5 & 21" Frame: Alloy Hybrid Front Suspension: Rigid Fork Rear Suspension: N/A Wheels Wheels: Alloy Double wall 36H Rims Tires: 700 X 35C Extra Front Wheel & Seat post with QR Drivetrain Shifters: SHIMANO EF500, 7 speed Crankset: Steel 28/38/48, 170mm Alloy crank BB Set: VP-BC73 Sealed Cartridge Freewheel: SHIMANO TZ21 14-28T, 7 speed Pedals: WELLGO PP Front Derailleur: SHIMANO TX51 Rear Derailleur: SHIMANO Acera M60 Bottom bracket: VP BC73 68X118 Components Seat Post: Steel 27.2 X 300mm Handlebar: Steel 600mm, 30mm rise Stem: ZOOM Alloy adjustable, 28.6mm Headset: Steel 1-1/8" threadless Brakeset: Alloy "V" Brake w/Shimano EF500 levers Grips: HL