The R* gear ratios are 1st 2.438, 2nd 1.579, 3rd 1.160, 4th 0.906, 5th 0.750. Ratios for a Harley are 1st 3.24, 2nd 2.21, 3rd 1.60, 4th 1.23, 5th 1.00. 1.00 is direct drive, anything less than 1.00 is overdrive! A Harley in 5th gear and 2,000
RPM is doing 45 MPH. I don't know what the ratio is for a 6th gear Harley but it is over drive and people who have ridden one say it is worthless unless you are on the freeway and can do 85 or 90.
The Harley is doing 45 MPH at 2000 RPM, 60 MPH at 2666 RPM, 85 MPH at 3777 RPM. The R* is doing 60 MPH at 2000 RPM, 80 MPH at 2666 RPM. At 3777 RPM the R* would be doing 113.3 MPH. You notice that at 2666 RPM the Harley is doing 60 MPH whereas the R* is doing 80 MPH.
Since the Harley transmission is a separate unit it can be altered. They started out with 4 speeds and went to 5 speeds now they have 6 speeds. Since the R* transmission is part of the engine it can not be conviently altered, and if it was done I assure you that you don't want to pay the price!
Clifford