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Rennen 4-Bolt Decimal Chain Ring

Rennen 4-Bolt Decimal Chain Ring

The Rennen 4-bolt decimal chainrings allow 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. CNC machined in the USA from aircraft grade 7075-T6 aluminum. 

  • Teeth: 3/32"
  • Thickness: 3/16" (4.8mm)
  • Bolt Pattern: 104mm
  • Weight: 100g (43T)
  • Black Only