Frame: Alloy frame Fork: ZOOM fork Tires: Chaoyang 27.5*2.1 Rim: double wall, anodized black F/hub: Alloy Joy disc hub R/hub: Alloy Joy disc hub Crankset: Prowheel 24/34/42T Chain: KMC 7Speed chain Headset: Neco Headset Disc brake: Tektro Mechanical disc-brake F/Derailleur: Shimano TOURNEY R/Derailleur: Shimano TOURNEY Shifter: Shimano EZ-Fire 3*7Speed Freewheel: Shimano 14-34T Handlebar: Super light X6 Alloy bar Stem: 3D Alloy Seat post: 31.6*350mm Size: 15”,17