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In these chains an X-shaped rubber seal is fitted between the inner and outer links, the extra two points against the links retain internal grease and stop dirt entering. With characteristic lower friction levels and increased running performance over O-ring chains, X-ring chains are recommended for higher powered and touring bikes.
The Triple-S range of standard, heavy duty, O-ring and X-ring chains may not bring you the British Titles and World Championship race wins of the Yamaha UK teams, they give you the reassurance on the road and track that you have an excellent product keeping you in front.