Folding bicycle wheel size 20 inch series tern link colours blue grey black white folding time 10 seconds dimensions folded 40 x 68 x 85 cm frame material aluminium frame alloy 6061 aluminium braking systems coaster brake rim brakes brake type v brakes fork stahl gear system internal gear hub number of gears 3 weight 138 kg rear derailleur sram i motion tyres schwalbe citizen front light trelock ls593 mini maximales fahrergewicht 110 kg