RK 630 GSV Silver 92 Classic Bike X-Ring Super Heavy Duty Motorcycle ChainThere are many chain manufacturers in the motorcycle industry but most (including some Japanese manufacturers) only offer a single type of sealing ring, using a "one type fits all approach" which is used on all their drive chains. This can be inefficient depending on the intended use. After several years of development, RK added the XW range of sealed chains to radically improve chain life and performance. This means less time replacing the chain and

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