A company called Speedway Instruments has created a micro-tachometer that can be attached directly to the left of your handlebar instruments. It is the smallest tachometer available for Harley Davidson parts accessories or any v-twin powered motorcycle. The video demonstration of this new product will give you a better idea about what I am talking about. This demonstration took place on a 2004 1200XLC Harley Sportster Custom. Would this be a Harley Davidson parts accessories that you would want to add onto your bike? I think it is a cool idea but am not sure if there is any use for it if your current tac works. What do you think? It may be easier to see and seems more accurate to read just because it is in digital number form. I bet it would look really cool at night when the red light was glowing as you increased and decreased RPMs. Do you know how much these are selling for?