Alpha ATV Top Dead Center Tool Motorcycle 14mm Spark Plug Hole

I needed a quick and simple tool for use at the race track for timing changes on my bike. Preparing the bike at home prior to a race I always use the dial indicator because it is more accurate. But, at the track, time is of the essence and this is a tool that solves the time issue very well. I don't even take the dial indicator to most races anymore.

Has some weight to it. Well made. Smooth operating.

Cheap, does the job accurately.

there are unspecified measurements on the side. This will find the top of the piston stroke but usually dont need a tool to do that.