What will astound you most the first time you ride a Red-equipped race bike? The shifting quality. The redesigned profile of Red's PowerGlide chainrings make them measurably stiffer, so more of your power turns into speed instead of component flex. But it's not just about the added power-transfer that comes with flex-free chainrings -- since they don't flex, they pick up and drop off the chain with unparalleled ease, And they look fantastically Pro, to boot. To our eyes, the new rings are reminiscent of FSA's Super chainrings. They look chunky and masculine, but this stiffer design has no weight penalty whatsoever.