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The International Standard Chain Guide (ISCG) mounting system was developed by a number of companies to achieve a consistency across the frame manufacturing board in 2003. While the original ISCG standard worked for a number of years, current frame manufacturing and component designs now demand a more rigorous standard.
  • The International Standard Chain Guide (ISCG) mounting system was developed by a number of companies to achieve a consistency across the frame manufacturing board in 2003.

  • While the original ISCG standard worked for a number of years, current frame manufacturing and component designs now demand a more rigorous standard.

  • As a result the newer ISCG’05 standard was developed by drivetrain component and frame manufacturers to accommodate the need for more strict guidelines and better compatibility.

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This means there are now two ISCG standards The original ISCG standard also known as ISCG03, ISCGold or simply ISCG The newer ISCG standard known as ISCG05
  • This means there are now two ISCG standards

    • The original ISCG standard also known as ISCG03, ISCGold or simply ISCG

    • The newer ISCG standard known as ISCG05

  • Not sure which ISCG standard your frame has? Simply measure the two lower bolt holes and compare them to the diagrams.

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Conclusion

Thanks for reading, now get out there and ride!

The Hive

Member since: 12/05/2012

51 Guides authored

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