• OneUp Components SRAM X-Cog Expander Sprocket

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        • $89.99 89.99
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OneUp Components SRAM X-Cog Expander Sprocket

Riders who spend a lot of time in the 42T can wear out the aluminium sprocket faster than the rest of their steel cassette. Instead of throwing away an expensive cassette that's only 10% worn, the X-Cog lets you get rolling again for a fraction of the cost.

Extend the life and range of your 10-42T cassette by replacing the aluminium 42T with the X-Cog 44T sprocket. The X-Cog provides more range, not just an easier granny gear. The increased range is a must for racers looking to maximize their chainring size for timed downhill sections, while still being able to conserve energy on transition stage climbs.

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.


  • 8 optimised upshift points
  • Press fit design ensure ease of assembly (no loose spacers)
  • Full spline width prevents gouging damage to freehub

Technical Data:

  • Material: 7075-T6 Aluminum
  • Weight: 100g (44T)
  • OneUp adapted cassette weight increase: 15g
  • Cassette range improvement: 4.8%

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

  • Delivery costFREE
  • Delivery toUSA
  • 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 PayPal, Bank Transfer or Card


  • Colour: Black, Green
  • Teeth: 44t
  • Speed: 11 Speed

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