Rennen Pentacle Threaded Decimal Chainring (Black) (44.2T)

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Rennen Threaded Pentacle Decimal chainring Description:

The Rennen Pentacle Decimal chainring is CNC machined in the USA from aircraft grade 7075-T6 aluminum featuring built-in chainring bolt nuts for easy installation and Rennen's decimal gearing system that allows you to dial in your gear ratio by fractions of a tooth. By making slight adjustments to the chainring circumference and tooth profile, decimal gearing provides slightly taller or shorter gear ratios, allowing for "in-between" gearing not possible with standard chainrings.


Features:

  • Aluminum 7075-T6 chainring
  • Built-in chainring bolt nuts eliminate the need for a chainring bolt wrench
  • CNC machining with decimal teeth
  • For 3/32" chains

Specifications:

  • Material: Alloy
  • Bolt Pattern: 5 x 110mm
  • Color: Black
  • Weight @ 44.7T: 2.3 oz

Need new chainring bolts? Check out our selection of chainring accessories.

This product was added to our catalog on May 15, 2026

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