Ideal for OE replacement of mid-size motorcycle, Lightweight and durable chain provides quick and smooth acceleration, Designed with cutting edge technology from various on-road and off-road racing, RK's original double-X-shaped "XW-Ring" seal provides exceptionally long chain wear-life, Provides three lubricant pools, more than conventional O-rings for longer life, Lubricated with specially formulated. vacuum-injected U-grease; locked in by tough Nitrile Butadine rubber XW-Ring, Polished and shot-peened link plates, High tensile strength ensures reliable performance, Chains include rivet connecting link