O.Symetric outer chainring for 4-bolt 110 BCD. The shape of O.Symetric chainrings makes pedaling harmonic and more efficient. When a biker uses classical shaped chainrings, effort changes in different crank positions. The non-circular shape of the O.Symetric chainrings brings effort in balance and allows a "more rounded pedaling" for increased efficiency performance.
Made of high strength 7075 T6 aluminum for increased durability and less weight.
This is a special edition of the O.Symetric that is not in production. The chainring has been optimized for time trials, making it more aerodynamic.
Fits Shimano Dura-Ace - FC9000, Ultegra - FC6800 and 105 - FC5800
This chainring has been used a very little, still a lot of miles left!
- Used a very little
- For Shimano 4-bolt 110 BCD
- 11 speed
- 58T - Perfect for TT's
- Prototype of the O.Symetric
- The same chainring as Chris Froome uses
- Non-circular shape