This is a VERY popular mod for the FZ1. The R1 shifter arm is a bit shorter than the stock FZ1 arm. Not the shift lever that your foot uses, it is the little arm on the shifting shaft. This mod takes at least 1 - 2 minutes and makes the shift quicker. More crisp / less shifter movment, a more positive feel. Need one from the 98 - 2000 R1 if anyone has one laying around.