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2. Derailleur - Wikipedia

   en.wikipedia.org/wiki/Derailleur

   Derailleur. Shimano 600 front derailleur (1980) A derailleur ( French pronunciation: [deʁajœʁ]) is a variable-ratio bicycle gearing system consisting of a chain, multiple sprockets of different sizes, and a mechanism to move the chain from one sprocket to another. [ 1]

3. Bicycle chain - Wikipedia

   en.wikipedia.org/wiki/Bicycle_chain

   Bicycle chain. Roller chain and sprocket. A bicycle chain is a roller chain that transfers power from the pedals to the drive- wheel of a bicycle, thus propelling it. Most bicycle chains are made from plain carbon or alloy steel, but some are nickel-plated to prevent rust, or simply for aesthetics.

4. SRAM Corporation - Wikipedia

   en.wikipedia.org/wiki/SRAM_Corporation

   SRAM Corporation. SRAM LLC is a privately owned bicycle component manufacturer based in Chicago, Illinois, United States, founded in 1987. [ 2] SRAM is an acronym comprising the names of its founders. [ 2] The company produces a range of cycling components, including Grip Shift, and separate gravel, road, and mountain drivetrains from 7 to 12 ...

5. Bottom bracket - Wikipedia

   en.wikipedia.org/wiki/Bottom_bracket

   Bottom bracket. Aerozine ceramic external bottom bracket bearing cups for BSC / ISO standard, that is M34.798×1.058 mm (1.37″-24 TPI) threads and a 68 mm wide bottom bracket shell. The bottom bracket on a bicycle connects the crankset (chainset) to the bicycle and allows the crankset to rotate freely. It contains a spindle to which the ...

6. Electronic gear-shifting system - Wikipedia

   en.wikipedia.org/wiki/Electronic_gear-shifting...

   An electronic gear-shifting system is a method of changing gears on a bicycle, which enables riders to shift with electronic switches instead of using conventional control levers and mechanical cables. The switches are connected by wire or wirelessly to a battery pack and to a small electric motor that drives the derailleur, switching the chain ...

7. Cogset - Wikipedia

   en.wikipedia.org/wiki/Cogset

   Cogset. 10-speed bicycle cassette. On a bicycle, the cassette or cluster [ 1] is the set of multiple sprockets that attaches to the hub on the rear wheel. A cogset works with a rear derailleur to provide multiple gear ratios to the rider. Cassettes come in two varieties, freewheels or cassettes, of which cassettes are a newer development.