Join Date: Jun 2016
Location: A Texan, living in Franklin, WI
What measurement are you getting 2-4mm less on? The width of the chain? That sounds like a lot. It doesn't kink? On a rear stand it rulls freely w/o one one or more of the links staying at an angle? Did it move freely by hand.
We may need some more info and the experts on here will be able to help I'm sure.
K5 1000 - ECU Flash; Manual CCT, K&N, Yoshi Muffler, Ti Midpipe; Q3+ 190/55 rear; 520 chain -1/+1; GP Shifting
'I help corn farmers plow their fields on my GSXR'