absoluteBLACK  Oval 104 BCD Chainring - 30 Teeth

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Offering an easy upgrade to smooth your pedal stroke and leave 1x chain retention issues behind, the 30-tooth absoluteBLACK Oval 104 BCD chainring is designed for use with all 104 BCD cranks.


  • Designed for use with all cranksets with a 104 BCD interface and 48 mm chainline, including Shimano, SRAM, Race Face and FSA
  • Patent-pending narrow/wide tooth profile helps keep your chain in place; 3D-machined tooth profile also sheds mud and offers quieter operation
  • Oval shape helps reduce stress on knees without changing your ride feel; also helps maintain a better cadence while climbing
  • Ovality is optimized for each chainring size, ranging from 10.2 to 14.4%, with timing of 110.5 to 116.3° after top dead center (TDC)
  • Crafted from CNC-machined 7075 aluminum with an anodized finish for excellent weight-to-strength ratio and exceptional durability
  • Compatible with all cranks with a 4 x 104 BCD interface, including Shimano XT, Zee, Deore, SLX and XTR; Race Face Sixc, Ride, Chester and Respond; FSA; E13; and more
  • Compatible with 9-, 10-, 11- and 12-speed SRAM Eagle drivetrains
  • 30-tooth chainring has built-in 2.5 mm spacers and threaded holes (M8 / M5) to accommodate this size on a spider
  • Includes: 2 M8 aluminum T30 Torx bolts, 2 M5 steel T25 Torx bolts, and 2 eccentric spacers


View all absoluteBLACK Bike Chainrings

Technical Specs

Item #211249
Best Use


Chainring Mount

4-bolt Symmetric

Chainring Shape


Bolt Circle Diameter

104 millimeters

Number of Teeth





36 grams

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