Fly Neutron BMX Bike 2019For 2019 Fly have refined the whole mid range bike line, cleaning up many of the details to make them more dialled than ever, The forks on the Neutron have been upgraded for a hydroformed 1 piece steerer tube, Trebol headset, a stronger 510 chain, bigger bars and a taller standover height, improving the overall look and feel, also upgraded is the cranks, theyve been upgraded to the clean Trebol Bueno cranks. The Neutron is aimed a little more toward