Tread : BC1.29x24T L
Material : Cr-Mo steel
Size : 2 sizes, For 12T / For 13T and larger sprockets
It gives the chain more clearance so that the chain won't touch the lockring.
For 13T and larger sprockets
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Sales price : JPY 6,080 - 14,560
GIGAS Sprocket, ultra light, perfectly round, low friction and very smooth, made of GIGAS aluminum alloy