KOSONorth America BA051310 TNT-B Multi-Function Gauge - Black Bezel

I do like this speedometer, I have it installed on my Yamaha 900 bolt.Because of my bike it does not show a gas level, but it will let you know when you need to fuel up. The install was a little challenging as most videos online are not in English. Still glad I purchased it, it's easy to see my speed which is better than the stock.

Love it

The speedometer itself is nice; instructions and videos not helpful, tech support sucks. Read the other reviews for speed problem. Mine read 104 mph at a GPS speed reading of 65 mph. To correct, in the tire setting, I simply changed the 100% default circumference setting to 63% and it was spot on GPS verified speed using my phone app. I started at 50%, too low. Went to 60%, just a little low...inched up to 63%, perfect speed reading. ** NOTE ** The gear function is NOT mechanical, but is a programmed algorithm based on speed and tach that you set through the gear learn process. If you set your gears prior to changing wheel diameter your algorithm will then be off...simply go through the gear learn process again and you will be good.

Easy to install. Just a little fiddly. Setting it takes some doing. It has a ton of functions to go through and set. Overall, it's great.

Didn’t work well at all. The instructions were in very badly broken English. What was there was extremely vague. I had to call tech support to clarify the calibration procedure for the gear indicator. After all that I took it out on the road and the speedometer jumped to 105mph. Re read the tire calibration. Verified my my settings and took it out for a ride with a friend. Still said I was between 85-105 the whole time while I was in 4th gear at about 3k rpms. Got home, deleted the gear indicator calibration. Went through the tire calibration a third time and took it for another ride. Well that didn’t help either. It shouldn’t be this difficult, I have a bone stock bike. I will be contacting customer support tomorrow to try to identify the issue.I am a mechanic with two years of formal education and 7 years experience in the field. There is absolutely no reason for it to be this difficult. If they can’t talk it out on the phone it’s going back as defective.Things to note:Gear indicator isn’t a true gear indicator. It’s a algorithm based on land speed and rpm. If you disable it however, you will lose your neutral indicator.Fuel gage isn’t a fuel gage. It didn’t come on until my first empty tank. However after seeing how the gear indicator light works I figure it’s probably another algorithm using data points from the low fuel warning activation and the mileage between them. Should be close but It’s still a gamble.