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  • I was building a weight-weenie six-evo hm a couple of yrs back and without knowing the specs assumed the Sisl2 was going to be the lightest between itself and Sram Red, especially as it was £700....but when I looked...Red was about 50g lighter and half the price.
    I never understood the big deal about Sisl2 and hollowgram.
    Anyone care to enlighten me?

  • I'm not sure there's been a Red crank that's lighter or stiffer than Hollowgram SL or SiSL2.

    But the weight difference is tiny, with the red crank being 60g or so heavier. So might as well call it even.

    Hollowgrams just look better, have detachable spider, cross compatible with MTB shiz and IIRC stiffer...might be wrong on that though.

    And you can trace their lineage back to this

    Which is kinda cool

  • I seem to remember that back then I saw cranks and rings were 480g without the spindle for the Sisl2....but i just checked again...seems i was wrong. Agreed 40-50g is unimportant in the real world...except if you're trying to get under 6kg :)

  • But the weight difference is tiny, with the red crank being 60g or so heavier

    How much actually are the lightest SISL2s? My red cranks are 525g with chainrings and axle. Without chainrings that makes them around 400g for arms and spider. Sure, the spider isnt detachable but who really swaps cranks between bikes that often? Or has the weird cannondale tool for that matter. That said, I'd love some spiderings on my CAAD6

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