I am considering switching to a 6 speed tranny in my 05 electraglide. The main reason would be to get better mileage. What are anybodys thoughts about this and if I did this would it be easier to just buy a 6 speed or remove the five speed and install a six speed kit in it. any other suggestions in improving my gas mileage. I ride pretty hard and when I do average 75 to 80 miles per hour I only get about 35 mpg. I have also gotten 40 but that was averaging about 65 miles per hour.