White Industries DOS ENO is the best freewheel that money can buy, PLUS it affords you the ability to change gears if the flat terrain turns hilly or vice versa.
Traditionally, freewheels are considered to be a 'consumable item' - a component that should be replaced at regular intervals. The ENO freewheel has been made rebuildable by first making everything replaceable, from the bearing and outer gear to the pawls and springs. Its is made durable and reliable by machining inner driver and outer gear case with extreamly tight tolerances resulting in a freewheel that runs concentrically so there isent tight and loose spots. The White Industries freewheel is the most durable, reliable and serviceable option available to single speedsters today.
This freewheel has closed bearings instead of an open bearing system. There are two major benefits to this:
Closed bearings are safe from dirt, sand and water with the bearings well assembled in one simple unit and so therefore are easy to replace.
In the White Industries DOS ENO freewheel, the component parts, such as bearings and sprockets, are replaceable when needed.
16T / 18T DOS: Blue lock ring, 3/32 is the only suitable chain size, bearing size 6708
17T / 19T DOS: Red lock ring, 3/32 is the only suitable chain size, bearing size 6808