Absolute Black

Oval CX1 110x5 Chainrings

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  • MSRP $83.99

Premium Cyclocross 110bcd x 5 arm oval chainrings designed for cranks like Shimano Dura-Ace FC7900, FC7800, Ultegra FC6750, Shimano 105/ 5750 and many more with 5 bolt fitting. Ideal for 1X conversion of your road crank. Narrow-wide chainring.

Size (Mass +/-1g):

38T (63g), 40 and 42T coming soon


Black, Racing Red (38t only)


Shimano Dura-Ace 7900,7957800, Ultegra 6750, Shimano 105- 5700, Tiagra 4650, FSA and lot more. Also compatible with Sram cranks with 1 hidden bolt.


CNC machined 7075 Txxx Aluminum


type II anodizing


38T- 11.4% ; Timing of 110.5º after TDC (top dead center) - Patent Pending


Advantages of our CX oval chainrings:

  • Finest design to provide excellent strength to weight ratio
  • Patent-Pending oval shape
  • Unique Patent Pending narrow-wide tooth profiles to keep your chain in place even in aggressive conditions
  • Special 3D teeth machining for ultimate mud relief, decreased wear and noise
  • Designed to handle the rigors of mud and grass
  • Superb quality and look.
  • Riders will not "feel" the oval shape
  • Improves traction and climbing abilities
  • Reduces knee stress


First you need to remove crank from the bike. Once removed, unscrew 5 bolts that hold two original rings together with T-30 torx key. Take off both original chainrings. Position Absoluteblack oval chainring in same place where the big chainring was. Please note that small indicator on the chainring Must sit behind crank arm - same way as original chainring indicates its position (If you are mounting it to the crank with one hidden bolt, then the small indicator has to be exactly opposite to the crank arm to assure correct oval position). Use provided AB bolts to lock the chainring in place using T-30 torx key with force of about 5-7Nm. Mount your crank back to the bike. Done

Always use a new chain with a new chainring.

Designed in UK. Manufactured in Poland (EU).

The World's finest oval (elliptical) road chainring. Non circular chainrings, Non-round chainrings. Asymmetrical chainrings.



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