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How to Replace your Lockring & Cog: Removing Fixie Sprocket

In this article, you will learn what a cog is; we'll show you how to replace a bike cog, provide tips on choosing the right one for your needs, and cover some important safety precautions you should take before starting the job.

Man adjusting a cog on a fixed gear bike. Source: adobe stock

In this article, you will learn what a cog is; we’ll show you how to replace a bike cog, provide tips on choosing the right one for your needs, and cover some important safety precautions you should take before starting the job.