Elliptical 110 BCD Asymmetric 4-Bolt for Shimano Cranks


Get better traction and acceleration when you use our elliptical (Oval) rings. Our proprietary design has ovality of 10% and timing of 112° after TDC (top dead center). These values provide the benefits of an oval ring without the drawbacks of greater ovality or more aggressive timing.  

The simplest way to explain how they "feel" is that where your pedal stroke is weakest it feels like you have a 2 teeth less on the chainring and where you have the most power it feels like you have 2 more teeth. They feel this way because with the radius of the chainring constantly changing, the torque needed to turn the cranks is constantly changing to better match your power output.  Example: a 34t chainring feels like a 32t in the weak part of your pedal stroke and a 36t in the part of the stroke where your legs have the most power.

Check out this podcast for a simple explanation of Ellitpical ring benefits:



  • These rings are for use with Shimano 110 BCD Asymmetric 4-bolt cranks.  Here is how to measure your BCD.  
  • Compatible with Dura Ace 9000, Ultegra 6800, 105 5800, Tiagra 4703, and Tiagra 4700
  • Mounts in the big ring position of the cranks but is offset inward for perfect chainline.
  • For 1x9, 1x10, 1x11 and 1x12 drivetrains (including SRAM Eagle)
    • Compatible with all 10, 11, and 12 speed chains (Including SRAM Eagle)
    • If using a 9 speed drivetrain use a 10 speed chain (shifts and works well on a 9 speed drivetrain and fits the ring tighter for better chain retention).
  • Complementing products:

Chainring bolts  - we recommend our 6mm bolts which are optimized of single ring mounting

Tanpan - allows Shimano mountain bike rear derailleurs to be used with Shimano road shifters

RoadLink - allows for wide range cassettes to be used with Shimano road rear derailleurs


     Tech Specs:

    • Design and manufactured in the Minneapolis, MN USA
    • Wolf Tooth’s patent pending Drop-Stop®  wide/narrow tooth profile for the ultimate chain retention and mud shedding ability
      • Recommend the use of a clutch style rear derailleur for the best chain security.
    • Material 7075-T6
    • Colors - black
    • Chainline - 44mm
    • If you plan to ride in very muddy conditions, we recommend a chainguide or chainkeeper in addition to a clutch-type rear derailleur! Without these precautions, you may experience chaindrops and/or chainsuck.
      • Weight - 38t - 66g, 40t - 74g, 42t - 81g