Cluster issue

[Batman_89]

So I had my gauges changed on my 750 katana, and now my speedometer is off so for example it says I'm doing let's say 80 but I'm only doing 70 so 10 off, but as I got faster let's say I'm doing 130 I'm actually doing 112 so 18 off and then 145 I was about 20 off, any ideas?

[92xjunker]

typical Katana speedo...... they are usually off by about 10% more if you changed tire ratios. like that over sized 160 or 170 on the rear. A speedo healer will correct that for you electronic gauge owners.