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Continue to ChatChallenge Grifo XS file tread pattern https://cycletechreview.com/2013/reviews/trigon-xqc-01-cyclocross/attachment/challenge-grifo-xs-file-tread-pattern/
Challenge Grifo XS file tread pattern https://cycletechreview.com/2013/reviews/trigon-xqc-01-cyclocross/attachment/challenge-grifo-xs-file-tread-pattern/