OneUp Components 42T Sprocket

Looking for the benefits of 1 x 11 ease of use without the price tag? Then you should check out OneUp Components’ 42T Sprocket – designed to extend the gear inches on offer of your existing 10 speed cassette. It’s billed as an easy retrofit, requiring the removal of one of the mid-range sprockets from your cassette to make space for the 42 tooth sprocket.

How well it’ll work without the specialised Sram 1 x 11 tooth shape and configuration remains to be seen, but OneUp claim that the 11-13-15-19-21-24-28-32-36-42 retrofitted cassette will provide a 17% improvement in cassette range. The 42T sprocket will be attractive to riders looking to go with one chainring upfront at a lower cost and for the less fit riders looking to extend the climbing capabilities of their 2 x 10 set-ups.

The OneUp 42T Sprocket is set for a January launch and is priced at $100, with free world-wide shipping. Find out more at

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