The main difference that i know is the sp had the dohc motor
Seven.
The book manufacturer.
Manufacturer :)
That will vary from manufacturer to manufacturer and sometimes from one tool to another that a manufacturer makes.
The manufacturer who makes the xr100 is Honda. These parts are for dirt bikes and can be found on many sites such as; motosport, makepolo and motercylezez.
Weetabix
Manufacturer
manufacturer
TVR
Volkswagen
Renault