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Amazon.com : Continental GP 4000S II Bike Tire, Black, 28-Inch x 22mm : Bike Tires : Sports & Outdoors
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Continental Grand Prix 4000 S II Tire 700x25 Black Folding Bead and Black Chili Rubber - Retro City Cycles
EuroBikeParts: Set of 2 Continental Grand Prix 4000 S II Tires GP 4000S 700 X 23 Road, Discontinued Unavailable, CONTI-GP4000sII
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Continental Grand Prix 4000S II Folding Road Tyre & Tube Twin Pack - Black - 700c x 23mm | ProBikeKit.com
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