Lock Collar Fixed-Gear Rear Cog Heat-Treated Threaded Rear Cog Electroplated Fixed Gear Sprocket CNC Machined

This cycle part is made from #45 steel, giving the rear sprocket a sturdy metal construction suited to fixed-gear bike use. Designed as a fixed-gear rear cog, it provides the toothed drive interface needed for the rear wheel setup on a fixed-gear bike. The threaded rear cog includes a matching lock collar and a threaded center, helping the components fit together as shown in the listing. The steel rear sprocket is stamped and CNC machined, then heat-treated and electroplated for a refined finished surface. Built for fixed-gear bicycles, this rear cog supports a reliable drivetrain connection and a clean, purpose-made look on the bike.