mjvoket8 Posted April 6, 2010 (edited) I am trying to compare my 09 rm-z250 to my friends 09 kx250f. I searched google and haven't been able to find gear ratios for 1st-5th gear or the primary reduction ratio for the rm-z. Can anyone help me out with this info? Also, if each bike had the same final drive ratio would they be comparable? 09 kx250f: Primary Reduction Ratio:3.350 (67/20) Gear Ratio: 1st:2.142 (30/14) 2nd:1.769 (23/13) 3rd:1.444 (26/18) 4th:1.200 (24/20) 5th:1.045 (23/22) Final Reduction Ratio:3.692 (48/13) 09 rm-z250: Primary Reduction Ratio: Gear Ratio: 1st: 2nd: 3rd: 4th: 5th: Final Reduction Ratio:4 (48/12) Edited April 6, 2010 by mjvoket8 Share this post Link to post Share on other sites