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  • Introduced in 2016, these lightweight, FEA-optimized, solid forged crankarms bring Cannondale System Integrated performance to more pricepoints than ever before. Lighter than Ultegra or Force Carbon cranks, they share more than just a family resemblance with the HollowGram cranks. They share the same interchangeable spider interface and are fully BB30 and BB30A compatible. The Cannondale Si crankset represents a fantastic upgrade for any BB30 equipped bike.

    • cannondale.com
  • this is interesting. Do I need a special tool to switch out the spider? my first bike I havent put together myself so the inner workings remain kind of a mystery (hydraulics, press in bbs)

  • Do I need a special tool to switch out the spider?

    Oh you :)

    Yes - you need the Si crank lock ring tool, or KT012.

    You'd also need the Si crank arm extractor tool or KT013

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