Elliptical 96 mm BCD Chainrings for Shimano XT M8000 and SLX M7000

$64.95

Get better traction and acceleration when you use our Elliptical (or Oval, same thing) 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:

http://mountainbikeradio.com/engineer-corner/elliptical-chainrings/

Compatibility:

  • These rings fit on the Shimano XT M8000 and SLX M7000 1x or 2x cranksets, and here are instructions on how to measure your BCD.  
  • Use only the stock Shimano XT M8000 or SLX M7000 chainring bolts 
  • These CAN be mounted to the XTR 9000 series cranks, but you will have to use the bolt caps that come with that crankset and you will need to file roughly 1mm off the threaded boss on each bolt cap (they are a little too long and don't allow the ring to be tightened down).
  • 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:

GC and GCX cassette extenders

 

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 - 49mm
  • Boost Crankset Chainline - 52 mm
  • Must use the stock chainring bolts.  The Wolf Tooth chainring bolts are a different size.
  • Ovality of 10% and timing of 112° after TDC (top dead center)
  • Maximum diameter is that of a chainring 2t bigger than the size you order (so be sure there is adequate chainstay clearance!)
  • 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 - 30t - 41g, 32t - 50g, 34t - 59g


    Free shipping on all orders over $50 USD!