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Shift Type

The shifter you need depends on whether you have flat bars or drop bars. In most cases, it also depends on how many rings or cogs you have. These days most shifters are "indexed", but the original shifters were friction. An indexed shifter is for a specific number of cogs. A friction shifter will work with any number of cogs, and thus is more general.

Shift Types:

  1. Separate
     The brake and shifter levers are two separate levers.

  2. STI STI stands for "Shimano Total Integration". It means the lever combines brake and shifter functions. One level controls both the brake and the shifting. To shift you push the lever sideways. Some bike specs just give the shifter name. Eg: Shimano Soro, and you must look up "Shimano Soro" to confirm it is a STI shifter. The vast majority of shifters these days are STI. Only downside is complexity, and they do not have a friction mode, so you cannot change to a different cog count without changing the levers.

  3. Bar end Shifters
     This is a type of shifter that stick out from the end of your handlebars.

  4. Downtube shifters
     These are the original shifters, located on the down tube. They are the simplest to maintain, because they don't involve the handlebars. The cables are short. However, you need to quickly take your hand off the handlebars to shift.

For flat bars, you can google many types of shifter.

To order a STI shifter, you need to know the bar diameter, brake type Example Shifters:

  BarD NumCogs BrakeTy --------------------------------------------------------------
  SRAM SX Eagle - CableDisk