You have a few options for replacing your legshield trim:
Original Aluminum - this trim is identical to what is put on at the factory. Unfortunately, it was rolled on by a precision machine originally, and it requires a specialtool to install and is very difficult to get right. Use at your own risk!
Plastic Repro Trim (LTR1) - This is a plastic extruded trim with a thin coating of aluminum over the top. It's relatively easy to install, and it looks VERY close to the original.
Chrome Tube - This is a tubular two-piece chrome trim that holds to the legshield with set screws. It's easy to install and can be done without removing the headset.
Rubber - Simply an extruded rubber strip that presses around the legshield.