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Ships within 48 hours · Estimated delivery Nov 9 - Nov 14
Material 7075-T6
Wolf Tooth patent info
Bearings sold here are replacement bearings
lightweight and looks great
See compatibility above
40T GC Cog for Shimano Black:(1) Black Material 7075-T640T GC Cog for Shimano The GC line of cassette extender cogs allow you to modify your 10 speed cassette into a wide range cassette. To achieve the optimal shifting, the GCs are optimized for Shimano or SRAM cassette. Compatibility: Compatible with Shimano 10 speed cassettes listed on the GC tech page Compatible with all 10 speed rear derailleurs and chains Note that you may need a longer chain that you currently have your bike Chain stretch should be
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