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9070 : 11-speed Di2 3500 : 9-speed with STI 2013: 6800 : 11-speed: 2400 : 8-speed 2014: ... The first Shimano MTB groupset was Deore XT in 1983. It was based on a ...
Deore XT is a mountain and touring bike groupset first introduced by Shimano in 1983. [1] It was Shimano's first mountain bike groupset, based on their existing Deore touring groupset, and it consisted of a triple-, double- or single chainring crankset, front and rear derailleurs, handlebar-mounted "finger" shifters, cantilever brakes, and large-flange hubs. [1]
However, 10-speed has become the norm by 2011 and the market leader Shimano even offers its budget groupset "Alivio" in a 10-speed version. [25] In July 2012, SRAM announced a 1×11 drivetrain called XX1 that does not make use of a front derailleur for lighter weight and simplicity. [ 26 ]
A groupset or gruppo (from the Italian for "group", sometimes 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 .
Shimano 105 9-speed STI levers. In 2003, Shimano introduced "dual-control levers" or STI for mountain bikes in their XTR groupset. Like the road shifters, XTR used the same lever for braking and shifting. This was met with some resistance as they limited the choice of disc brakes to only those made by Shimano.
Though pictured with 11-speed 105 mechanical, the parts list shows a 105 12-speed group screenshot from khsbicycles.com Shimano’s 105 Di2 components carry R7170 (STI levers) and R7150 ...
SRAM currently has 20 mountain bike groupsets, divided by field of application, from more to less expensive: Cross Country: XX SL Eagle Transmission 1x12 speed; XX1 Eagle AXS 1x12 speed; XX1 Eagle [52] 1x12 speed; XX1 [53] 1x11 speed; Downhill: X01 DH [54] 1x7 speed or 1x10 speed; GX DH [55] 1x7 speed; Enduro: X0 Eagle Transmission 1x12 speed
In 2001 Shimano introduced a set of trekking components called Di2 (Digital Integrated Intelligence), which included electronic shifting and automatic adaption of front and rear derailleur to riding speed. During the 2000s both Shimano and Campagnolo (2005) [6] experimented with electronic shifting in professional cycle races. [3]