The Profile Racing Cassette Cog is machined from 7075 Aluminum. The proprietary 10-spline center of these cogs fit only Profile Racing’s splined cassette hubs. It will work with 3/32" chains and is anodized gold.
*Aluminum cogs are intended for race day use only. They will wear out much faster than CrMo cogs.*
BMXGuru.com / C&W Cycle
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