Description
The proprietary 10 spine center of these cogs fit only Profile Racing’s Splined Cassette Drivers.
-Standard and Elite Cogs are CNC machined from heat-treated 4340 aircraft alloy steel for strength and durability.
Weight:
-Standard 16t- 54g/1.89 oz
-Elite 16t- 44g/1.54 oz
-Aluminum 16t- 22g/.77 oz
*Aluminum Cogs are intended for riders 13 years old or younger. They will wear out much faster than CrMo cogs.*
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