When I bought my BRP the seller threw in an aftermarket speedo that he had not yet installed-still in the box that he had bought over the internet. The instructions were included but no indication of who produces it. It is an ATK mechanical speedo with OEM Honda igntion switch all set up on a nice aluminum bracket. Bolted right up I illuminates well. Problem is the speedo readings are all over the place. Impossible to regulate speed with it. The installation was straightforward-just screw the original speedo cable into the new unit & a couple screws in the original odo mounting holes on the triple clamp. There is a mild kinks in the cable as it enters the speedo because it enters very near the front of the upper triple clamp. Could this be the culprit or is this just a low quality product?