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Rear sprocket

Ref: 777109510XX68

The blue rear sprocket provides you with the following advantages: 

  • Made of high-strength 7075-T6 aluminum, the strongest aluminum in the world  
  • Originally developed for the aircraft industry and then adopted by the best rear sprocket manufacturers  
  • Cleaner, straighter and smoother chain travel, because it is ground precisely flat to 0.002 mm  
  • No vibration - therefore maximum efficiency of power transfer   
  • All these features mean slow wear and extreme durability over the long-term  
  • Anodized blue, with a permanent, organic environmentally friendly colorant
  • Sprockets with different teeth number as stock are CCCUO_EU!


42 teeth


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42 teeth (7771095104268)
45 teeth (7771095104568)
47 teeth (7771095104768)
48 teeth (7771095104868)
49 teeth (7771095104968)
50 teeth (7771095105068)
52 teeth (7771095105268)