Shimano DURA-ACE Track CogThe Shimano SS 7600 Dura Ace is a professional grade track cog engineered for high intensity racing and training. CNC machined from hardened chromoly steel, it offers an exceptional strength to weight ratio and superior resistance to wear. This precision manufacturing ensures a perfectly straight chainline, which minimizes friction and prevents unwanted chain tension during peak power output. Designed specifically for the Dura Ace 7600 groupset, this
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