The most reasonably priced component used on the Vl800 Boulevard C50 2011 (l1) Usa California Canad (e03 E33 E28) Speedometer (vl800 E28) is the Screw.
The Speedometer (vl800 E28) is made up of components including this Speedometer which is the most expensive.
This schematic depicts all components used in the Vl800 Boulevard C50 2011 (l1) Usa California Canad (e03 E33 E28) Speedometer (vl800 E28) partslist.