The stock chain on a bike such as the busa is the best for several reasons. One, there is no master link and no circlip holding it together. Two, if the bike is stock geared there is very little chance of a link breaking or the chain breaking. Three, It is the exact size ( number of links) that the bike needs, no need to cut or fool around. Four, an OEM chain like this is really tested to withstand the a-busa. Five, it is reasonable price for this level of quality. On other bikes with less torque it is not an issue, I would never put on a chain with a masterlink/circlip on a bike with this much power .