BMX BIKE BALL BEARING CAGE CRANKSHAFT BOTTOM BRACKET 5/16" CRANKSET CHAINSET Go to amazon.com Related posts Which is the best cranksets for bmx bikes? FeatureOutside diameter (approximate) : 45 mm.Inside diameter (approximate) : 32 mm.Number of balls : 9.Balls diameter : 5/16" (7.94 mm).Sold individually Description1x Ball bearing for crankshaft. For BMX bike.
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