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e*thirteen EX Cog Cassette Range Extender
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Price:
£59.95
inc. VAT
  • Add-on cog to extend gear range of 10 spd. Shimano and SRAM cassettes
  • Timed and ramped specific to Shimano and SRAM cassettes
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Overview

1x Drivechains are everywhere you look this season from complete bikes to winning enduro rigs. Everyone is doing it so why should you have to miss out? With the e*13 EX Cog range extender you don't have to. Simply fit this sprocket to your existing 10 spd cassette, using the clear instructions provided, and say goodbye to your front shift setup.

  • It's an add-on cog to extend gear range of 10 spd. Shimano and SRAM cassettes
  • It comes in 40t and 42t for use with Shimano cassettes and a 42t only for use with SRAM cassettes
  • Installing your EX Cog is easy. Remove the 15t or 17t cog from your cassette & place the EX Cog on your freehub, then install your existing cassette back in place (complete instructions here)
  • Each EX Cog is timed and ramped specific to Shimano and SRAM cassettes
  • The EX Cog comes with a longer steel replacement, B-limit screw for your derailleurs. Your current one won't be long enough to get the best shifting up to the new cog
  • Available in Black, Red, and Blue

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FAQ

EX Cog compatibility chart

Click below to download

Extended-Range-Cog-Compatibility_D.pdf (1 MB)




Can I use the 40 tooth (40t) EX Cog on my 36 tooth cassette?

We don't recommend using the 40 tooth (40t) EX Cog with a 36 tooth cassette. Shift performance will be compromised as the timing of the shift features relative to the cassette will not be correct.




Can I use the 42 tooth (42t) EX Cog with a 34 tooth cassette?

The 42 tooth (42t) EX Cogs WILL NOT work with 34 tooth (max) cassettes. A 6 tooth jump is the maximum for excellent shift performance.




Is it hard to set-up the EX cog?

It's really not too hard, but keep in mind that you are working at the extreme limits of your rear derailleur, so small changes can make a big difference.

If you are still struggling with the setup and adjustment, we recommend heading to your local bike shop.




I have a really worn drivetrain. Will the EX Cog work ok on my bike?

Old drivetrain components could cause poor shifting performance. We recommend a new chain and a new or well-cared for cassette.




What is the extra screw included with the EX Cog for?

It's a replacement B limit screw for your rear derailleur. The longer screw may be needed for proper derailleur set-up. If you are unsure about setting your B limit, refer to our how to guide, or head to your local bike shop.

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