The gearing options for mountain bikes seem complex and confusing. They vary from triple crankset, single ring, or a double.
For many years the basic mountain bike drive train contained a triple crankset conjoined with a freewheel or cassette that has evolved from 6 to as much as 11cogs. In recent times there are still the triple crankset options, but there are also the double cranksets with two chainrings as well as a single crankset which harbors just one chainring (1x)
Many pro bikers are starting to utilize a smaller 10-speed road chain consisting of a 9speed setup to minimize the weight of their bike.
The SRAM which was introduced in early 2012 called XX1 that didn’t make use of a front derailer so as to make it simpler and lighter consisted of a 1x11 gearing system. They also had gearing systems of 1x12 like the SRAM Eagle which was introduced in 2016.
The number of gears on a mountain bike depends on the crankset being used. The cranksets and the number of gears they contain include;
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From the 19801s to the late 2000s, mountain bikes mostly had 21, 24 or 27speeds, with three gears in front alongside 7, 8 or 9 Gears behind as the case may be. Thirty-speed bikes were formally unworkable, as the mud-shedding capacity of a ten-speed cassette and the complexities of a ten-speed rear derailleur were never suitable.
The gearing systems of mountain bikes have since evolved with time; now there are various upgraded gearing systems as preferred by the rider.