Featuring all the superior design of the E-350 range with the incredible innovation of speed sensitive gears.
No levers, no cables, no chance of anything going wrong, just simply a clever gear system that changes up and down at the designated speed.
They grow up so fast don't they? Now, their bicycles can grow with them! Trade in your ByK for a larger model within 1 year of purchase, you get 50% back of the original purchase price, towards a new ByK. Trade it in within 3 years of purchase and you'll get 30% back of the original price, towards a new ByK.