• OneUp Components Expander Sprocket + Cog Kit

        • $79.99 79.99
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OneUp Components Expander Sprocket + Cog Kit

The OneUp Components Sprocket gives you 90% of the benefit of 1x11 systems at 10% of the cost. Incredibly simple to install, it fits behind most 11-36 cassettes, displacing one sprocket from the main cluster. Ideal for upgrading your 10 speed to a wide range cassette.

OneUp Components is a small team of passionate mountain bikers, dedicated to bringing genuine value to the MTB market. OneUp was founded by three former Race Face engineers, Chris, John and Sam. Together they have over 22 years of bike industry experience and have developed some of mountain biking's most recognisable and award winning products.


  • 16T sprocket provides more even cassette progression for smoother cadence and improved shifting
  • Compatible with most SRAM and Shimano 10 speed components
  • Compatible with 1x10 and 2x10 drivetrains
  • Uses standard freehub driver bodies
  • 12 upshift points optimised for most 11-36 cassettes
  • Uses original 28,32,36T steel sprockets for maximum durability

Technical Data:

  • Weight: 18g (16T), 71g (42T)
  • Material: 7075-T6 Aluminium (42), chrome plated hardened steel, (16T)
  • OneUp adapted cassette weight increase: 51g
  • Typical 3x to 1x system weight decrease: 367g
  • Cassette range improvement: 17%
  • 10-speeds: (11-13-16-19-21-24-28-32-36-42)

Buy OneUp Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

  • Delivery cost $9.99
  • Delivery toUnited States of America
  • 365 Days return or exchange

    If you're not completely satisfied with an item you may return it within 12 months of purchase. We'll give you a full refund if the item hasn't been used or the component hasn’t been fitted.

    More information on returns
  • Pay by Bank Transfer, PayPal or Card


  • Colour: Black, Green
  • Teeth: 42t
  • Speed: 10 Speed

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