I've been using one of these for a couple of months now, and it's done the job faultlessly. Designed for eight or nine speed systems and specifically compatible with certain E*Thirteen and MRP chain guides, it's the perfect addition to any fourcross, downhill or enduro bike. 34, 36 or 38t sprockets sit on a 9mm spindle. Machined from 7075 aluminium it has a competitive price of £42, although many shops have reduced it to half of that. Enough of the facts, what's it like? Really, really good is the answer. A couple of months in, that cool anodised finish is still there with only a bit of fading on the tips of the teeth. The spacious design makes it easy to clean, and also allows you to clean behind the sprocket where oil and grit can build up - something you can't do with a lot of similarly priced sprockets. I haven't weighed it, but it seems pretty light, and I can't fathom how it could be heavier than a lot of the completely flat sprockets I've used in the past. The bright design and shape really changes the aesthetics of the bike, which people can spend a lot more than £42 and still fail miserably at. There is no flex in the sprocket, and the teeth are as straight as when it left the factory, despite it being forced to run with a dodgy chain and being scraped over logs and rocks. For £42 (or a lot less now) you do get a fantastic piece of kit. It looks good, does its job extremely well, and will outlive most of the other components on your bike. £42 may seem a lot, but buy cheap and feel the difference, and you'll be rushing out for this.
