Top quality, made by MRB, Lambretta GP rear brake cam.
  This is a handy brake part to improve your GP rear brake or upgrade your Li, SX, TV rear brakes. The cam is wider so it acts on the shoes more for the same movement of the rear brake pedal. The cam comes with lubrication slots, so when the cam moves its constantly lubricating in the casing.
 
The cam now comes in high tensile zinc plating.