PAIR 26 x 1.75 (559 - 21) MOUNTAIN BIKE SIZE FLIP FLOP FIXIE WHEELS IDEAL FOR CONVERTING YOUR MOUNTAIN BIKE TO A FIXIE. PAIR 26 x 1.75 (559-21) FLIP FLOP FIXIE WHEELS RIMS WITH SEALED HUBS. THIS SIZE IS FOUND ON MOST ADULT BIKES, MTB BIKES, ATB, CRUISERS DOWNHILL AND TREKKING BIKES.
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