Fly Proton BMX Bike 21" TT Gloss Trans Dark Blue RGroup_C1EDEF12900569D17DDE806ED486C79DE5593081 and an adjustable stem

and an adjustable stem

and large side wings for optimal protection

ensuring your e-bike runs smoothly and looks great

similar to the X-DOME™ cassette

Fly Proton BMX Bike 21" TT Gloss Trans Dark Blue RGroup_C1EDEF12900569D17DDE806ED486C79DE5593081 and an adjustable stemThe Proton BMX Bike has been enhanced for 2019, offering excellent value with its freecoaster version. It features a lightweight and durable Full CrMo frame. The fork has been upgraded to a hydroformed 1 piece steerer tube for durability and reliability. Additional upgrades include a new Trebol headset, Trebol cranks, a durable 510 chain, a taller standover height, and bigger bars, all designed to improve handling, feel, and appearance.