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A groupset or gruppo (from the Italian for "group", often misspelled grouppo) is a bicycle component manufacturer's organized collection of mechanical parts. It generally refers to all of the components that make up a bicycle excluding the bicycle frame, fork, stem, wheels, tires, and rider contact points, such as the saddle and handlebars. These parts typically include the following: * 2 gear levers or shifters ''and'' * 2 brake levers ''or'' * 2 integrated brake levers/shifters * 2 brakes, front and rear * 2 derailleurs, front and rear * 1 bottom bracket * 1 crankset * 1 chain * 1 cogset, freewheel or cassette With the following forming part of some groupsets: * 1 headset (more commonly included with vintage groupsets) * 1 seatpost * 2 hubs, front and rear (although, most manufacturers now offer groupset-branded pre-built wheels) * Pair of pedals * assorted cables and cable housing Except for special commemorative versions, manufacturers do not actually package the various components together to be sold by retailers as a complete groupset. Therefore when a modern road groupset is bought after-market (as an upgrade for an older bike, or for someone building their own bike), the customer can choose which parts they require, the price of the groupset is just the individual prices of the chosen parts added together. The major groupset manufacturers are Campagnolo for road bicycles and Shimano and SRAM for both road and mountain bikes. Manufacturers typically offer a range of several groupsets, each targeted at a different budget or use. For instance, Dura-Ace, Super Record and Red are the top-of-the-line road racing groupsets for Shimano, Campagnolo and SRAM respectively while Claris, Veloce and Apex are their entry level road racing group sets, respectively. ==List of Groupsets== Below is a list of the three largest manufacturer's groupsets for Road and MTB applications. Each manufacturer's offering is arranged in descending price/quality. The number of sprockets of the cassette in each groupset is shown in brackets. The total number of gears is determined by this number multiplied by the number of chainrings, for example a bike that has a double chainring and a 10-speed cassette has 20 gears, although some of them overlap. Please see the article on bicycle gearing for more information. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「groupset」の詳細全文を読む スポンサード リンク
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