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absoluteBLACK Oval e*thirteen Boost Chainring

Niel Ubod April 11, 2024


Premium oval MTB chainring for your e*thirteen direct mount crankset!

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absoluteBLACK Oval e*thirteen Boost Chainring

The absoluteBLACK Oval e*thirteen Boost Chainring is a premium oval ring for e*thirteen direct mount cranksets. Made from 7075-T6 aluminum, the chainring is lightweight and stiff. Featuring a narrow-wide teeth profile and one of a kind special oval shape, this ring will make you ride faster while also increasing traction!


Advantages to aB Oval MTB Chainrings

  • Excellent weight to strength ratio
  • One of a kind special oval shape
  • Greatly improves traction and climbing abilities
  • Unique Patent Pending narrow-wide teeth profiles to keep your chain in place for minimum 12 months!
  • Special 3D teeth machining for ultimate mud relief, decreased wear and noise
  • Superb quality and great look
  • Reduces stress on the knees


  • Crankset: Compatible with e*thirteen TRS, TRS+ and TRS Race Carbon cranks
  • Chain: These chainrings are designed to work with all 9-speed, 10-speed, and 11-speed chains. They also work with 12-speed Eagle and 12-speed KMC chains


  • Color: Black
  • Interface: e*thirteen Direct Mount
  • Offset: 4 mm
  • Chainline: 52 mm Boost
  • Ovality: Optimized to each size. Range of 10.2-14.4%
  • Timing: Optimized to each size. Range of 110.5-116.3° after TDC (top dead center)
  • Material: CNC machined 7075 aluminum
  • Weight: 30T - 58 grams | 32T - 62 grams

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