5 stars
Fantastic, this is how much this sort of thing should cost. It is a bit of a faff to set up (like all bb mounted guides) you will possibly need chainring spacers as well. It works so well (and silently with a decent chain stay protector) makes you wonder if you need a lower roller apart from full-on DH; It's lighter, doesn't clog up with mud and has noticeably less drag than my old DMR set up. A b