first of all there is a diffrent ratio between gears which means
that there will be a diffrent in the rpm from 4 gear to 3 then from 6 gear to 5 gear
even if you are down shifting from the same rpm
i know the following couple of lins will be confusing
seconed there will be a diffrent rpm diffrences between two diffrent rpm while down shifting
for example if you downshifting from 4 gear while in 5000 rpm to 3 gear and the diffrence is 500 rpm
then if you down shifitng from 4 gear to 3 gear while in 10000 rpm to 3 gear then the diffrence will be a 1000rpm in a liniar way
cbr fs 02
race tech springs, arrow slip on,rear hugger
menual cct ,k&n,under tail