• OneUp Components 1x11 Cassette Sprocket

        • $19.99 19.99
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OneUp Components 1x11 Cassette Sprocket

Improve the backpedal performance of your 11 speed Shimano cassette without losing range.

The OneUp 18T sprocket and spacer kit replaces the 17T and 19T sprockets within a stock 11 speed Shimano cassette and spaces the cassette out by 4mm which greatly reduces back-pedal chain dropping issues.

Three former Race Face engineers, Chris, John and Sam, founded OneUp. Together they have over 22 years of bike industry experience and have developed some of mountain biking's most recognisable and award winning products.


  • Chrome plated hardened steel
  • Compatible with XT/XTR M8000/M9000 11-40T, XT M8000 11-42 cassettes
  • Can be used with most medium or long cage 11 speed derailleurs
  • For use with any 11 speed shifters and chain
  • Weight: 24g


  • Mount the OneUp green spacer first and reinstall all sprockets except the stock 17T and 19T sprockets (these are replaced with our 18T and aluminum spacer).
  • Adjust the low limit screw to eliminate the final click on your shifter

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: Silver
  • Teeth: 18t
  • Speed: 11 Speed

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