The Harley Davidson 1991-1992 Sportster Five Speed Parts Catalog Manual No. 99451-92 is a specialized dictionary published by Harley-Davidson Motor Company in 1993. This paperback manual serves as a technical reference guide for motorcycle enthusiasts and mechanics interested in maintenance and repair of Harley-Davidson Sportster models from 1991 to 1992. Focused on the subject area of motorcycles and vehicle maintenance, this manual provides detailed information in English for those looking to enhance their understanding of engineering and technology related to these specific models.