• OneUp Components Shark Expander Sprocket + Cog + Cage Kit

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        • $117.99 117.99
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OneUp Components Shark Expander Sprocket + Cog + Cage Kit

OneUp your Shimano 11 speed drivetrain with the OneUp Shark Expander Sprocket, Cog & Cage Kit for XT 11-42 cassettes.

OneUp Components Shark 50T Sprocket and Cage is part of the widest 11-speed 1X system ever created. The 50T upgrade increases the stock Shimano 11 speed 11-42 cassette range by 19%. The 50T provides more total cassette range, not just an easier granny gear.

Adding the OneUp 50T sprocket lets you increase your 1x11 front chainring from a 30 to 34T without losing any low range.


  • Material: 7075-T6 Aluminium (50T and Cage), Nickel plated hardened steel (18T)
  • 18T sprocket provides more even cassette progression for smoother cadence and improved shifting
  • Shark Cage is compatible with M9000/M8000 GS and SGS derailleurs and offers 50% more pulley offset than stock
  • Uses standard freehub driver bodies (Not XD)
  • 8 upshift points
  • Maintains the 42T as the smallest alloy sprocket preventing premature drivetrain wear. No major drivetrain manufacturer goes smaller than 40T in alloy.

NOTE: Not compatible with e-13 wide flange hubs (LG1, TRS, and TRS+)

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: Grey
  • Teeth: 50t
  • Speed: 11 Speed

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