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Looking to buy a Salsa-Cutthroat equipped with SRAM Rival brifters; a 1X drive train (11-42t rear cassette RAM Rival long cage deraileur); SRAM GX 1000 crankset; and SRAM Rival Hydraulic Disc Brakes. The problem is my old legs need a 2X drive train. Can I convert the above system to a 2X by adding a front deraileur, double chain ring (38-24t), and second brifter or is converting to a 2X much more involved?

  • Why not get a wider range cassette and a smaller cog? Check out this setup comparison and this thread on MTBR. – Klaster_1 May 28 '18 at 5:56
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    Usually, the answer to “Is it a good idea to buy bike A and a bunch of parts to convert it to bike B?” is “No. just buy bike B.” – David Richerby May 28 '18 at 10:38
  • Thanks everyone. I found a product that will allow me to pair and a Shimano MTB XT-2X11 drive train & hydraulic brakes with drop bar brakes-shifters. Grevenalle GX Shifter - not exactly a "Brifter" but designed for the rigours of cycle-cross and touring. Now the search is for a Titanium frame vs. carbon. The Salsa Fargo TI, perhaps? – Alonzo May 29 '18 at 17:31
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You will need to buy a complete groupset. The SRAM 1x drivetrains have an optimized geometry where the upper pulley is moved slightly to the back. Furthermore the 1x drivetrains from SRAM can't compensate for the chain movement to the side caused by a shift with the deraileur.

As you can see in the links the Rival 1x deraileur is completly different to the Rival 22 deraileur. https://www.sram.com/de/sram/road/products/sram-rival-1-rear-derailleur https://www.sram.com/de/sram/road/products/sram-rival-22-schaltwerk-wifli-mit-mittlerem-k-fig

I think even the shifters need to be changed as I am not sure if the use the same pull ratio. The 1x road drivetrains are derived from the MTB stuff.

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