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About HardDrive Manual Primary Chain Adjuster

HardDrive Manual Primary Chain Adjuster

  • Ideal for bikes equipped with big displacement high performance engines
  • Permits manual selection of primary chain tension and is a direct replacement for the original equipment automatic version
  • The anodized billet aluminum adjuster allows you to fine tune & lock settings
  • The manual adjustment locks the chain tension in place to prevent free play during severe shifting.

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