Discontinued items archive

Why do you only have a 42 tooth (42t) EX Cog for SRAM cassettes?

The 40t is available only for Shimano as SRAM does not offer a 34 tooth cassette. We find that these combinations work best.

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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.

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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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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.

We have some great how-to guides here to help you out.

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

 

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I have a short cage derailleur on my bike. Will that work with an EX Cog?

We recommend a medium or long cage derailleur for use with the EX Cog. If you are not sure about maximum derailleur capacity, check here to reference our handy compatibility chart.

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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.

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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.

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EX Cog compatibility chart

Click below to download

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How to install the EX cog with a Sram 10sp drivetrain

How to install the EX cog with a Sram 10sp drivetrain

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How to install the EX cog on a Shimano 10sp drivetrain

How to install the EX cog on a Shimano 10sp drivetrain

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/hc/en-us/articles/210525723-How-to-install-the-EX-cog-on-a-Shimano-10sp-drivetrain
How to adjust your derailleur for Ex Cog

How to adjust your derailleur for Ex Cog

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/hc/en-us/articles/208906386-How-to-adjust-your-derailleur-for-Ex-Cog
Ex Cog Troubleshooting guide

Ex Cog Troubleshooting guide

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