Mudguard for e.g. Moto Martin and RAU motorcycles in the original width at that time.
 This style became  like to  a variety of different 18 inch special chassis from the 70s and 80s with e.g. Focella Italia or Marzocchi fork.
 As we know, our parts are made of good, light-weight GRP that is dyed through in red in our own workshop.