Koso North America BA051310 TNT-B Multi-Function Gauge - Black Bezel

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.

Stock Speedo is sufficient especially after getting accommodated to the bike.

I have a new 2019 Yamaha Bolt and bought this to replace the stock speedometer. The installation itself was pretty simple: just unscrew two nuts and disconnect the cable to the old unit, then take the wiring harness off the old unit and put it on the new unit, connect up the cable, and put the new unit on the bike. The cable connector does have an interlock on the wide face that has to be pushed in for the connection to be released. However, setting up the new unit wasn't as intuitive as I had thought. The first problem I had was the symbolism on the unit face while going through the setup process. Seems a backward "6" was really an"a" standing for "adjustable." Had to get that by calling Koso. I just couldn't get past that until it was finally explained to me that I wasn't looking at a foreign language -- everything is in English, just looking a lot different than what I am used to. Next thing I was told by Koso was that the set-up process was sequential (which it is) but you can flip through the screens and enter the setup at any screen just by holding the "select" key down for three seconds (The "select" key is on the handlebars, on the engine start pad.) Note: the "Replace" key under the "Select" key is not used in the setup process. So I went through the setup procedure at least a dozen times, making little progress here and there slowly. Then I went to Koso's website and watched their installation videos, which really helped a lot. After that clarity was bestowed upon me, and I finished all the necessary adjustments in settings, including training the Gear position, which requires setting it while riding the motorcycle and actually changing gears on cue. The Yamaha Bolt can only sense neutral and does not actually have a gear position sensor, so the Koso meter has to record the ratio of vehicle speed and engine rpm, which is a different constant value for each gear. So it can only determine which gear it is in if the vehicle is moving (giving it data on vehicle speed and engine rpm.) When you stop, with the engine idling, it loses the ability to determine gear position until you start moving again. Another thing that might confound you (it did me, anyway) is that the front tire size for the new Koso speedometer is already pre-set, and you don't need to change it unless you install a different brand front tire than OEM. And if you elect to put on a different brand, then you will need to know what the default circumference was (it is 200 cm, or 79".) The percentage you enter for setup is 100% by default, which you leave as is if you have the OEM front tire. If you have a different front tire, then you enter its circumference as a percentage of how much bigger (or smaller) it is than the OEM tire circumference. A couple of other things that I have yet to input are Maintenance intervals (4,000 miles on my 2019 Bolt), and speed warnings, and temperatures (I haven't entered anything because it isn't clear yet to me just what they should be.) Pictures attached are the instrument lighting color I picked, and the red lighting for night riding (red is the color least affecting your night vision.) EDIT: After all that trouble setting up the Kosometer, when I took it for a test ride, first the gear indicator stopped working at all, then the unit began displaying kilometers per hour while displaying the mph indicator, and could never get it back to displaying correct mph. And then the whole display began flashing at me. I didn't mention this before but the unit I received had obviously been returned before -- and that is what I did with it - returned it as a defective unit. I'll stick with the stock speedometer, as anyway I could really read the kosometer any better in the daylight than I could the stock unit.

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.