Cannondale's new SpideRing is a one-piece combination of spider and chainring, improving chainring stiffness that improves shifting performance. Weighing in at just 174 grams (standard 53/39T configuration), this is a piece of art. The SpideRing is standard on the new 2013 Hollowgram SiSL2 cranksets, but is backward compatible with virtually all Hollowgram cranksets. Cannondale's One Piece Integration concept reduces the number of parts which improves performance in a simpler system.
SpideRing is officially compatible with SRAM 10-speed road and Shimano 11-speed road drivetrains. We suspect that it will run fine with Shimano 10-speed drivetrains, but have yet to try it ourselves.
Installation is easy using the same lockrings (KP021) and lockring tool (KT012) Cannondale has always used.