Compatibility

• Hollowgram Si
• Hollowgram SiSL
• Hollowgram SiSL2

What size should I choose?

• Chainrings use proprietary bcd mounting system, therefore they are sold as sets of 50/34 or 52/36T combination only

Mounting instructions
Remove crank from the bike. Open the lockring with "Cannondale Hollowgram Spider Removal Tool KT012". Remove original chainring/spider.  Generously grease the waved interface of the crank arm, then place new spider chainring same way as original one. Apply small amount of medium strength Loctite on the lockring threads and tighten it with torque of about 47-54 Nm.