525 XRE ChainIdeal for OE replacement of mid-size motorcycleLightweight and durable chain provides quick and smooth accelerationDesigned with cutting edge technology from various on-road and off-road racingRK's original double-X-shaped "XW-Ring" seal provides exceptionally long chain wear-lifeProvides three lubricant pools, more than conventional O-rings for longer lifeLubricated with specially formulated. vacuum-injected U-grease; locked in by tough Nitrile Butadine rubber XW-RingPolished and shot-peened link platesHigh tensile strength ensures reliable performanceChains include rivet connecting link