Originally Posted by James H Haury

Check gaerlan Custom bicycles for parts,Be sure whether the headset is 1" inch or 1 1/8" before you order.They have many Dahon parts available .You may be able to get reflectors which attach to your spokes with velcro through Rivendell they do not affect spoke tension and are light.Gaerlan carries aluminium seatposts for dahon and two different types of suspension seatposts. If you change out the handlepost and use a longer bar you might want to wrap it with bar tape so that you can rest your hands in different places. A flip flop hub( fixed on one side freewheel on the other) and front and rear brakes are another possibility as long as you plan on changing brakes anyway .Try better brake pads on the front first though they should make a great deal of difference. You also could make it a coaster brake 3 speed rather easily .Bike nashbar was selling a 3 speed shimano hub with coaster brake for sixty nine dollars?Of corse niether a flip flop hub or a 3 speed conversion will be dirt cheap.