The lightweight 1x Chain Guide for Oval Chain Rings is now also available for BB mount, it keeps the chain safely in place in any position of the Oval Chainring. Developed in Germany in cooperation with absoluteBlack is the OVAL GUIDE ™ from 77designz probably the lightest fully adjustable chain guide in the world. Now covers chainrings up to 38 Teeth.

More details


41,97 €

+ Shipping

More info


  • Torx 25 only single tool installation
  • Designed for Oval and Round Chain Rings
  • Boost compatible
  • Incredible Light
  • Front Flip Technologie for tool-free service
  • NEW: Made in Germany


    Mount: Bottom Bracket
    Capacity: 24-38T Round 26-36 Oval
    Chainline: 48-53 mm (Boost Ready)
    Compatibility: 1x10, 1x11 or 1x12 drivetrain
    Backplate: AL 7075 T6 Black Anodized
    Slider: PA66 GF 10 (Front Flip Technology)
    Color: Black
    Weight: 22 gram (incl. mounting hardware)


    • Chainline Spacer Set
    • 77designz Sticker

    DIA AWARD 2017 77designz OVAL GUIDE oval guide review mtb lab 77designz Freesolo auf MTB news 77designz freesolo Chainguide Cycleholix review oval guide  

    !!! Not compatible with Bionicon and Garbaruk direct mount oval rings 30T / 28T / 26T due to smaller Chain Line !!!

    !!! The OVAL GUIDE works only with 1*10 drives if you have an clutch rear derailleur and an narrow / wide chain ring !!!

    What means +BSA?

    +BSA means that the backplate of the Chainguide spots it self on the BSA BB shell.

    Mounting Standards Overview:

    Which standard has your bike? HDM | S3 | E-TYPE | ISCG 03 | ISCG OLD | ISCG 05 | ISCG 05+BSA | YT Jeffsy

    77designz Chainguide Mountingstandards E-Type, S3, HDM, ISCG 05, ISCG 03, YT Jeffsy

    Watch the Installation Instruction:

    All our chain guides are super easy to mount. You don´t even have to remove the crank. Just watch the video below and you will see how easy it is. You only need a T25 Key. When installing the chain guide use 3 Nm to tighten the Slider Screw (Blue) and 6 Nm for the M6 screw (Silver).

    absoluteBlack and 77designz

    The unique cooperation of absoluteBLACK (oval chainring expert) and 77designz (smart, ultralight chain guides manufacturer), resulted with entirely new product that is incredibly light, mounts in no time, secures the oval chainring at any position of the pedal and can be opened by hand if there is a need of chain removal.