Hi Ken:
I don't have a TKO 600 in my C1, but I am very pleased with the close ratio TKO 600 in my multi use Pro-Touring Classic. Do the math and you will find that with the 3.27 first gear, and 3.36 rear gears, first will be steeper than a T-10 or Muncie 2.20 Low with 4.11 gears or even with a...