The 77designz  1x chain guide is amazing; it weights almost nothing is mounted in no time and keeps the chain secure. It´s designed in Germany and tested during many Enduro and Downhill races in all over Europe. The freesolo runs as well with 1*10 drives as long as you use an clutch rear derailleur and an narrow / wide chain ring.

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42,36 € tax incl.


52,95 € tax incl.

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Which Chainguide fits my bike?

Use our FRAME FIT form to find the right chainguide for your bike.


  • Install without crank removal
  • Single tool installation (Torx 25)
  • Boost compatible
  • Titanium Torx 25 hardware 
  • Incredible Light


    Mount: ISCG 05+BSA (44-44.6 mm diameter.)
    Use BB REDUCER for Bottom Brackets with smaller diameter.
    Not compatible with e13 or Race Face Cinch BSA30 Bottom Brackets (Diameter is too big).
    But you can shorten the supports with the file, of course without guarantee loss ;-)
    Capacity: 26-36T Round 
    Chainline: 48,5-52,5 mm (Boost Ready)
    Compatibility: 1x10, 1x11 or 1x12 drivetrain
    Backplate: AL 7075 T6 Black Anodized
    Slider: PA66
    Hardware: Torx 25 Titanium Screws
    Color: Black
    Weight: 17g (incl. mounting hardware)


    • 2x 1.0 mm Washer
    • 2x Gear Spacer
    • 2x Chain Line Spacer
    • 1x M6x11 Torx 25 Ti Bolt


    77designz freesolo wins Design and Inovation Award 2016 The worlds lightest Chainguide? Best of 2016 the 77designz Freesolo Chainguide 77designz Freesolo wins design and inovation award 77designz Freesolo auf MTB news 77designz freesolo Chainguide


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

    !!! The FREESOLO 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 mounting standard has your bike? HDM | S3 | E-TYPE | ISCG 03 | ISCG OLD | ISCG 05 | ISCG 05+BSA | YT Jeffsy?


    77designz Award Winning Chainguide for XC, Enduro und Downhill

    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).