Cannondale hollowgram Direct mount narrow wide chainring

Color : Black
Variant : 28Size Guide

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The lightest and most refined premium Round direct mount 1X chainring for Cannondale Hollowgram cranks. Fits all old and new models. Particularly suited for F-si frames. 

Hollowgram direct mount chainrings allow for flawless 1X drivetrain setup. Reliable, extremely light, stiff and clean looking on the bike. Chainring's specific offset creates a lot better chainline compared to other offerings on the market.

Size (Mass +/-1g):

28T(55g), 30T(56g), 32T(57g), 34T(70g)




Cannondale F-Si Hollowgram Si, SiSL, SiSL2 and FSA Modular cranks like SL-K , afterburner, Comet. Not compatible with Shimano HG+ chain


cnc machined 7075 Txxx Aluminum. Long-lasting construction




47-52mm (3.7mm offset). Chainline depends on the length of the axle you use and spacers configuration.

Mounting instruction for Cannondale hollowgram direct mount chainrings:

Generously grease the waved shape of the crank arm, then put the chainring so that fits completely(convex side to the crank arm). Put small amount of 17px strength Loctite on the lockring threads and tighten it with torque of about 47-54 Nm.

You will need "Cannondale Hollowgram Spider Removal Tool KT012" or similar to open and close the lockring. 

The most advanced, Patent Pending tooth profile on the Market guarantee minimum 12 months of excellent chain retention capabilities! We mean it. You can finally take your chainkeeper off of the bike. Tested by XC Silver World Champion Marek Konwa.

Its specially designed narrow-wide tooth profile keeps the chain really snug, allowing you to leave your chainkeeper in the garage. 

Designed in UK. Manufactured in Poland (EU).  The lightest solution on the bicycle market – period.

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