Ordered this for my Tiger 800 XRT. Wanted the Vsystem as I didnt want another electronic attachement on my handlebars. This works when you start the engine and stops when the engine does. For me, it was awkward to install as it required me to take fuel tank and air box off to get to the vacuum line I needed. Other bikes dont need that level of strip down. Once this was done, installing the resevoir and running the oil tube down to the sproket was straight forward. It was a bit messing filling the resevoir up but I think that was just me! Make sure you have the resevoir set to prime and keep filling until the oil makes its way down to the nib. Took me about 10mins to get the flow right to about one drop a minute. Does it work? - Time will tell or at least the other reviews say it does but so far so good!