In combination with a Ratio 12 speed ratchet, the Ratio cable spool allows you to upgrade SRAM 10 speed road shifters to 12 speed. Additionally, the spool can be used as a replacement part to repair damaged or broken SRAM 11 speed road shifters.
- Don’t scrap your 10 speed shifters – upgrade them to 12 speed with a Ratio spool
- With a spool fitted, 10 speed shifters are also compatible with SRAM 11 speed ratchets
- Replace a damaged 11 speed cable spool, repairing your broken 11 speed Red*, Force*, Rival* or Apex* shifter
Our cable spools are now 3D printed in stainless steel.
Note: If you fit the Ratio cable spool to 10 speed shifters, you will be able to fit 11 or 12 speed ratchets. To re-fit the original 10 speed ratchet just replace the original cable spool.
In your kit you will find:
- Ratio cable spool
- M2.5 screw for shifter disassembly
To use the spool you will need:
- SRAM 10 or 11 speed road shifters from the Red*, Force*, Rival*, Apex* or S Series* groups.
All products we offer for sale on our website are Ratio Technology products unless stated otherwise. All third-party products, company names and logos remain the property of their respective holders and use of them does not imply any affiliation with or endorsement by them.
To fit your spool to SRAM shifters for hydraulic brakes, see the following video. When you remove the red-coloured SRAM spool, replace it with your new Ratio spool**:
To fit your spool to SRAM shifters for cable brakes, see the following video. When you remove the red-coloured (11 speed) or white-coloured (10 speed) SRAM spool, replace it with your new Ratio spool. Note that an 11 speed shifter is shown, but the process is very similar for 10 speed models**.
NOTE: On some older shifters, the reach adjuster will not spin freely when it bottoms out. Stop turning the reach adjuster screw as soon as you encounter resistance.
Please note that the cable spool is not required for newer models of 10 speed shifters; some of these shifters are already 11 speed compatible. For more information on compatibility and how to identify your shifter, check our guide.
View our Support page here.
* Ratio Technology Limited is not in any way affiliated with, sponsored or endorsed by SRAM, LLC.
AXS®, DoubleTap®, eTap®, SRAM®,SRAM APEX®, SRAM EAGLE®, SRAM FORCE®, SRAM RED®, SRAM RIVAL®, X0®, X01®, XX1® are registered trade marks owned by SRAM, LLC. Eagle™, Exact Actuation™, GX™, NX™, SRAM APEX 1™, SRAM Force 1™, SRAM RIVAL 1™, S-series™, SX™, WiFLi™, X-Actuation™, XD™, XDR™, XPLR™, XX™, Zero Loss™ are trademarks of SRAM, LLC.
** Please note that modifying these components may void the original SRAM warranty.









Jonathan Porter (verified owner) –
The original red plastic spool had the hole part broken off. This was just a replacement rather than an upgrade to 12 speed, and worked well. The video made it relatively easy to do. Expensive for a small part but saved changing the shifter, so a life saver really.
Mark Bullen (verified owner) –
A shifter saver!
This tiny part saved me hundreds of dollars. SRAM doesn’t sell any shifter parts and, as far as I can tell from the SRAM website, they don’t even sell a shifter without a brake caliper.
Installation was a bit tricky, particularly getting the whole spool assembly back into the shifter…almost requires three hands. It didn’t help that I reinstalled it incorrectly the first time but didn’t discover that until I had reassembled everything. In total it took me over 4 hours. The video instructions were very helpful although they make it look a lot easier than it actually is.
Joel (verified owner) –
Svaed my shifter from the scrap pile! Will be much longer lasting than the original. Fitting instructions were good, a pick is helpful to get the spring seated.
Gabriel –
An excellent replacement for the damaged/worn OEM spool, this part extended the longevity of my shifter as opposed to replacing the entire unit per manufacturer reccomendation. #righttorepair