Ratio Technology’s 12-speed conversion kit for 11-speed SRT DoubleTap mechanical levers has not only proven to be quite popular, but also works impressively well. As expected, the company has implemented this act with a new conversion kit that converts existing SRAM 2 × 11 mechanical road transmissions to 2 × 12.
The new kit is again quite minimal in terms of the amount of parts needed, in this case only the new 3D stainless steel ratchet with 3D printing for the right lever and a pair of 3D printed plastic pulley wheels rotating on Enduro bearing cartridges. The kit is also quite inexpensive – 112 US dollars / 158 Australian dollars / 100 pounds / 99 euros, and it should be just as easy to install.
Of course, simply adding these bits to your current SRAM Red 22, Force 22 or Rival 22 transmission won’t give you that extra gear; there are still some key hardware changes needed. Ratio Technology built the system based on SRAM’s latest 12-speed AXS groups, which means you’ll still need a cassette (and matching free hub housing), a flat-top chain, and a front-wheel drive (or connecting rod) to complete the conversion.
All of this, unfortunately, increases the overall effective cost of conversion by about five times compared to a single kit, but that doesn’t mean it shouldn’t be conducted here.
There are still legions of supporters of the current generation of SRAM mechanical road groups, including CT personnel, and this conversion kit should retain all the positive attributes while providing a wider choice of gears than was ever offered.
The weight teenager will be delighted that the converted mechanical group should also be much lighter than the full electronic group SRAM Force AXS 2 × 12. According to the calculations of Ratio Technology (which, I confess, I did not check), the converted mechanical group Force 22 will be 222 g lighter than the equivalent installation of Force AXS in the form of rim brakes or 382 g lighter for disc -brake adjustment.
And when it comes to finances, even if you bought the necessary SRAM AXS components at the full retail price, you’re still looking at a fraction of the cost of a complete new SRAM electronic kit (provided you already have an 11-speed donor thing on hand) . Ratio Technology estimates the converted Force with a rim will cost $ 1,170 cheaper than the new Force AXS, while a redesigned disc brake setup will save a whopping $ 1,786 – and although, yes, some parts will be used, you’re still in end up with a brand new cassette, chain and gear.
If you also consider the ease of use (both at home and in the field) of mechanical SRAM transmissions and the emotional appeal of sticking to cables and housing, I suspect Ratio Technology will have some trouble finding willing customers. for this case.
I just got a serial sample of the new Ratio Technology conversion kit – and, conveniently, I have the old 2 × 11 SRAM manual transmission on hand. Crossing your fingers, this kit will work just like the other Ratio Technology I tested a few months ago. And while Ratio Technology clearly doesn’t advertise this feature, maybe – just maybe – it can work with the original pulleys on 12-speed Shimano or Campagnolo road installations?
We’ll find out soon. Stay tuned for a full review.
More information can be found at www.ratiotechnology.com.