The 77designz – absoluteBLACK 1X OVAL GUIDE™ is fully optimized to work with oval chainrings. It is the only chain guide on the market that was developed purely for securing the chain in any position of the Oval chainring. No other chain guide is capable of securing the oval chainring so well.
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.
# Oval Guide # Upper Chain Guide # Top Chain Guide # Chain Device
Fits to: ISCG 05 with BSA BB (44-44.6 mm Dia.)
Use Adapter for XT or other 41 mm Dia. BB
Use Adapter for XTR or other 39 mm Dia. BB
Compatibility: any 1×10, 1×11 or 1×12 drivetrain
Chainline: 48-53 mm (Boost Ready)
Capacity: 28-34T Oval or 26-36T Round
Backplate: AL 7075 T6 Black Anodized
Slider: PA66 GF 10 (Front Flip Technology)
Hardware: Torx 25 Titanium Screws
-Chainline Spacer Set
-1x M6x11 Torx 25 Ti Bolt
Weight: 17 gram (incl. mounting hardware)
Watch the Installation Instruction
Not compatible with Bionicon and Garbaruk Oval Rings 30T / 28T / 26T due to smaller Chain Line.