Shimano rules road bike groups. But with 105 R7000, Ultegra R8000, and Dura-Ace R9100, plus Ultegra Di2 and Dura-Ace Di2 to choose from, how do you decide? We dive into the differences in performance, weight, and tech to help you decide which Shimano groupset is right for you.
The group was introduced in 1983 as 105, from 1989 it was called 105 SC and since 1999 105 again. Today's standard of the groupset is the 11-speed gearshift and Hollowtech II bottom bracket or cranks (7000 series) (by 2019). The Shimano 105 road bike group came in a first version in 1980 on the market. General Information: Group Family General Info: Introduced originally in the mid 1980's, the Shimano 105 groupset is an intro level road racing groupset to fill the gap between the more expensive Shimano 600 group and the sport & recreation parts. Shimano first introduced Dura-Ace 600 group sets in the 1983 as an alternative to more expensive recreational bicycle accessories. Components included derailleurs, side pull brakes and gear sets. Affordable pricing resulted in a degree of popularity that.
List of Shimano Mountain Bike groupsets available with their 'M' numbers.Also includes significant changes introduced for that model year in brackets.
Shimano Mountain Bike Groupsets 1984
Deore XT - M700 - 'Deerhead' (6 speed non indexed transmission)
Shimano Mountain Bike Groupsets 1985
Deore XT - M700 - 'Deerhead'
Shimano Mountain Bike Groupsets 1986
Deore XT - M730(6 speed indexed transmission)
Deore - MT-60
Shimano Mountain Bike Groupsets 1987
Deore XT - M730
Deore - MT-60
Shimano Mountain Bike Groupsets 1988
Deore XT - M730
Deore - MT-60
Mountain LX
Exage Mountain - M450
Exage Trail
Exage Country
Shimano Mountain Bike Groupsets 1989
Deore XT II - M730/732(7 speed)
Deore II - MT-62(7 speed)
Mountain LX
Exage Mountain - M450
Exage Trail
Exage Country
Shimano Mountain Bike Groupsets 1990
Deore XT II - M732/735(Rapidfire underbar shifters introduced on all groupsets)
Deore DX - M650
Deore LX - M550
Exage 500LX - M500
Exage 400LX - M400
Exage 300LX - M300
200GS - M200
100GS - M100
Shimano Mountain Bike Groupsets 1991
Deore XT II - M732/735
Deore DX - M650
Deore LX - M550
Exage 500LX - M500
Exage 400LX - M400
Exage 300LX - M300
200GS - M200
100GS - M100
Shimano Mountain Bike groupsets 1992
XTR - M900(8 speed and Rapidfire plus shifters)
Deore XT II - M732/735(Rapidfire plus shifters)
Deore DX - M650/651(Rapidfire plus shifters)
Deore LX - M550
Exage 500LX - M500
Exage 400LX - M400
Exage 300LX - M300
200GS - M200
100GS - M100
Shimano Mountain Bike groupsets 1993
XTR - M900
Deore XT II - M732/735
Deore DX - M650/651
Deore LX - M560(New black finish for LX components, Rapidfire plus shifters introduced on all remaining/new groupsets)
Exage ES - M520(Pale grey finish)
Exage LT - M320(Pale grey and black finish)
Altus A10 - AT10
Altus A20 - AT20
Altus C10 - CT10
Altus C20 - CT20
Shimano Mountain Bike groupsets 1994
XTR - M900
Deore XT - M737/738(8 speed, wide diameter 'Parallax' hub bodies, Compact Drive chainrings and cassette)
Deore LX - M560/563/564(Wide diameter 'Parallax' hub bodies and Compact Drive chainrings introduced on all remaining/new groupsets)
STX-SE - MC31
STX - MC30
Alivio - MC10/11
Altus C50 - CT50
Shimano Mountain Bike groupsets 1995
XTR - M900/910(Wide diameter 'Parallax' hub bodies)
Deore XT - M737/738
Deore LX - M564/565(8 speed)
STX-RC - MC33
STX - MC32
Alivio - MC12
Acera-X - M290
Altus - CT90
Shimano Mountain Bike groupsets 1996
XTR - M950(New matt grey finish, V brakes and 4 arm chainrings)
Deore XT - M737/738/739(V brakes)
Deore LX - M565/567
STX-RC - MC33/36
STX - MC32/34
Alivio - MC12/14
Acera-X - M290/291
Altus - CT90
Shimano Mountain Bike groupsets 1997
XTR - M950
Deore XT - M739(4 arm chainrings)
Deore LX - M567/569/M600(V brakes and 4 arm chainrings)
STX-RC - MC36/38
STX - MC32/34/37
Alivio - MC16
Acera-X - M290
Altus - CT90
Shimano Mountain Bike groupsets 1998
XTR - M950/951
Deore XT - M739/740
Deore LX - M567/569/M600
STX-RC - MC38/40(8 speed, V brakes and 4 arm chainrings)
STX - MC34
Alivio - MC12/16
Acera-X - M290/291
Altus - CT92
Shimano 105 Groupset History Channel
Shimano Mountain Bike groupsets 1999
XTR - M950/951/952(9 speed)
Deore XT - M750(9 speed)
Deore LX - M570(9 speed and new blue/grey finish)
STX-RC - MC41
STX - MC34
Alivio - MC18
Acera - M330
Altus - CT92
Shimano 105 Generations
Why Is Shimano 105 Called 105
Shimano Mountain Bike groupsets 2000
XTR - M950/951/952
Deore XT - M750/751 (Disc brakes)
Deore LX - M570
Deore - M510(New 9 speed groupset replaces STX and STX-RC)
Alivio
Acera
Altus