Ratio mashup road SRAM 11sp & Shimano 12sp groupsets into a new SRAMano 12 upgrade, giving affordable new life to old bikes…
Making the leap from old SRAM 11-speed to modern 12-speed road just got cheaper AND one step simpler, thanks to this new Ratio 2x12SH Upgrade Kit. Ratio already created theout of your old SRAM Red. But now you can go 12sp without needing to switch to a new freehub body. All thanks to Ratio and new Shimano 12-speed cassette compatibility…We’ve loved what Ratio has been doing since their first time we saw their 3D-printed stainless steel ratchet that converted 11speed SRAM road shifters.
Now, they’ve created a new internal ratchet that upgrades your SRAM 11sp shifter to match the exact spacing of a Shimano 12sp cassette.Out back you will also need to swap in the new derailleur pulleys into your exiting SRAM derailleur. Because Ratio says, “ the geometry of Shimano 12 speed road cassettes means it is necessary to use a slightly offset jockey wheel in order to properly engage the largest sprocket.The best part of this upgrade is that is less wasteful – requiring you to dispose of fewer usable parts. And that means it will be cheaper in the end, as well. The Shimano 12-speed cassette fits on your existing Shimano HG 11 freehub body. And the Shimano 12-speed chain still works with your existing 2×11 chainrings.
The kit will upgrade any of SRAM’s 2×11 generation mechanical road shifters. Red, Force, Rival, or Apex – or even SRAM 10sp shifters if you add another internal upgrade Ratio offers. Then you just need a new Shimano 12sp cassette & chain – Dura-Ace, Ultegra, or 105 – which will work with your current chainrings and HG-equipped wheel.
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