These reproduction Smiths Grey Face Speedometers are a replacement for 650 cc. Triumph motorcycles with 1 to 1.25 ratio, stock part number 58-43630. It also has a 12 volt back light to illuminate your speedo gauge; bulb comes installed. A nice quality speedometer ready to bolt in place and screw your cable on and go, and at a fraction of the cost of a rebuild original. Fits 1966-1970 Triumph Motorcycles.