absoluteBLACK Premium Round 110 BCD Road Inner Chainring Shimano Dura-Ace 9100 - 38t 110 Shimano Asymmetric BCD 4-Bolt BLK ModelNumber=H2389 Color Black/White Bottle Type Standard

Color Black/White Bottle Type Standard Access Style Top Weight 40 Mount Type Bolt-On Material Composite Defined Color White

Reduces friction and energy consumption

}Sun Ringle Duroc SD37 Expert Front Wheel - 29" 15 x 110 mm / 20 x 110 mm 6-Bolt Black

Ponytail compatible

absoluteBLACK Premium Round 110 BCD Road Inner Chainring Shimano Dura-Ace 9100 - 38t 110 Shimano Asymmetric BCD 4-Bolt BLK ModelNumber=H2389 Color Black/White Bottle Type StandardabsoluteBLACK Premium Round 110 BCD Road Inner Chainring for Shimano Dura Ace 9100 38t 110 Shimano Asymmetric BCD 4 Bolt Black. absoluteBLACK Premium Round 110 BCD Road Chainrings utilize absoluteBLACKs top tier design features. They are designed for new and old Shimano 4 arm cranks such as Dura Ace 9100 9000 Ultegra 8000 6800 & 105 R7000 and more. Optimized with smooth shifting in mind premium chainrings have a 6 point ramp and recess design.