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A cog attaches to the hub on the rear wheel and works to provide change gear ratios to the rider. Cogs come in two varieties, freewheels or cassettes, of which cassettes are a newer development.
All the Most Popular BMX Aluminum Race Cogs at Dan's Comp
Showing 1 to 11 of 11 Products
$24.95Answer Holeshot Cog
$27.95Answer Aluminum Threaded Cog
$29.95Tangent Alloy Cog (Black)