Rakeway LTD - Aluminium replica of early model Harley-Davidson XR750 flat track race fuel tank. This particular one is being used on an XR replica based on a Harley-Davidson 1200 Sportster, hence

Harley-Davidson XR750 “Streetclone” – BikeBound

Mule Motorcycle's Racing Replica Flat Track—From The Archives

HD XR750 Replica?

Guy Morden - Harley-Davidson XR750 – Perth County Moto

Harley-Davidson XR750 “Streetclone” – BikeBound

Mule Motorcycle's Racing Replica Flat Track—From The Archives

GAS XR Harley Flat Tracker — Gasoline Motor Co.

1978 Harley-Davidson XR750 - Tuned by Bill Werner for Scott Parker, 1991 - National Motorcycle Museum

Mule Motorcycle's Racing Replica Flat Track—From The Archives