> These silver anodized rings come with a huge range of teeth and bolt pattern options (and like Race Face's Evolve rings), are armed with a sensible steel granny when bought as a set - although an alloy granny ring is an option. Unlike the Evolve rings, though, they're available seperately. In terms of shifting they have pins, plates and a very complicated pattern of layered computer designed ramps. In the real world, shifting is good, the silver anodising will keep its good looks for longer than the black Evolves and, despite some deliberate and horrible half shifting, these rings stood up well to scratching. Shifting in muddy condiions didn't suffer either. Available in four or five bolt patterns.

> ...some of the best shifting chainrings you can buy...high quality rings