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Front Derailleurs
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Model
Year  
 ± 
Comments
XTR FD-M952-E
2000
E-Type
127 g
116 g
−8,66%
TS, DP(?)
Force
2008
braze-on
88 g
83 g
−5,68%
 
Ultegra FD-6700-F
2010
braze-on
89 g
84.35 g
−5,22%
averaged (84/84.7)
Centaur Triple
2003
braze-on
107 g
102 g
−4,67%
10-speed, for triple cranksets
XTR FD-M952
2002
34.9 mm
117 g
112.5 g
−3,85%
TP, TS, averaged (111/114)
Deore LX FD-M571
2002
31.8 mm
140 g
135 g
−3,57%
DS, TP or DP?
Deore LX FD-M580
2005
34.9 mm
174 g
168 g
−3,45%
Dual Pull, TS, add 6.7 g for 31.8 mm and an additional 11.1 g for 28.6 mm shims
Dura-Ace FD-7800-F
2004
braze-on
74 g
71.5 g
−3,38%
double, 10-speed, averaged (70/73)
XTR FD-M952-E
2000
E-Type
127 g
123 g
−3,15%
TS, TP
Deore XT FD-M751
2003
34.9 mm
138 g
134 g
−2,90%
TP, DS
Ultegra FD-6700-B
2010
31.8 mm
104 g
101 g
−2,88%
 
Super Record 11s
2010
braze-on
72 g
70 g
−2,78%
11-speed
XTR FD-M952-E
2002
E-Type
127 g
123.5 g
−2,76%
TS, TP, averaged (123/124)
Campagnolo Record
2005
braze-on
55 g
53.5 g
−2,73%
10-speed, averaged (53/54)
Record CT
2005
braze-on
75 g
73 g
−2,67%
10-speed, averaged (72/74)
Alivio FD-MC14
1996
28.6 mm
144 g
141 g
−2,08%
DP, TS
Rival
2008
34.9 mm
102 g
100 g
−1,96%
 
Rival
2009
31.8 mm
102 g
100 g
−1,96%
 
XTR FD-M952
2002
34.9 mm
117 g
115 g
−1,71%
DP, TS
Rival
2007
braze-on
88 g
86.5 g
−1,70%
averaged (86/87)
Dura-Ace Di2 FD-7970-F
2010
braze-on
124 g
122 g
−1,61%
 
XTR FD-M960
2004
34.9 mm
132 g
130 g
−1,52%
Top Swing, Dual Pull
Dura-Ace FD-7900-F
2009
braze-on
67 g
66 g
−1,49%
double, 10-speed, averaged (66/66)
Dura-Ace FD-7800-F
2005
braze-on
74 g
73 g
−1,35%
double, 10-speed
Record QS STD + CT
2008
braze-on
75 g
74 g
−1,33%
 
Ultegra FD-6500
2003
braze-on
81 g
80 g
−1,23%
+30 g for 35 mm band adaptor
Chorus Triple
2005
braze-on
98 g
97 g
−1,02%
10-speed
Force
2009
31.8 mm
102 g
101 g
−0,98%
 
XTR FD-M960
2005
31.8 mm
132 g
131 g
−0,76%
Top Swing, Dual Pull
Rival
2007
34.9 mm
102 g
101.5 g
−0,49%
 
Force
2007
braze-on
88 g
87.6 g
−0,45%
averaged (87/88/88)
XTR FD-M960-E
2003
E-Type
145 g
145 g
±0,00%
Top Swing Dual Pull Front Derailleur (BB mount)
Deore XT FD-M751
2002
34.9 mm
138 g
138 g
±0,00%
TP, DS
XTR FD-M952
2002
31.8 mm
117 g
117 g
±0,00%
DP, TS
Deore XT FD-M751
2002
31.8 mm
138 g
138 g
±0,00%
TP, DS
Campagnolo Record
2004
braze-on
58 g
58 g
±0,00%
10-speed
XTR FD-M961
2004
31.8 mm
148 g
148 g
±0,00%
Down Swing, Dual Pull
Dura-Ace FD-7703
2003
braze-on
103 g
103 g
±0,00%
9-speed, triple
Ultegra FD-6600-F
2005
braze-on
89 g
89 g
±0,00%
 
Chorus CT
2005
braze on
78 g
78 g
±0,00%
10-speed, for compact crankset
Deore LX FD-M580-E
2006
E-Type
183 g
183 g
±0,00%
TS, Dual Pull
Force
2007
31.8 mm
102 g
102 g
±0,00%
 
Dura-Ace FD-7800-F
2006
braze-on
74 g
74 g
±0,00%
double, 10-speed
Force
2007
34.9 mm
102 g
102 g
±0,00%
 
Force
2007
braze-on
88 g
88 g
±0,00%
 
Rival
2009
braze-on
88 g
88 g
±0,00%
 
Microshift
FD-R88 Arsis
2012
?
67 g
67 g
±0,00%
Braze on
Ultegra FD-6600-B
2006
31.8 mm
103 g
103.1 g
+0,10%
 
Deore LX FD-M581
2005
31.8 mm
176 g
177 g
+0,57%
DP, DS
Dura-Ace FD-7700-F
2001
braze-on
72.5 g
73 g
+0,69%
w/ bolts
Dura-Ace FD-7700-F
1999
braze-on
72.5 g
73 g
+0,69%
 
XTR FD-M970-E
2008
E-Type
142 g
143 g
+0,70%
Top Swing Dual Pull Front Derailleur (BB mount)
Record 10s
2004
braze-on
69 g
69.5 g
+0,72%
10-speed, averaged (68/71)
Deore XT FD-M750
2000
28.6 mm
123 g
124 g
+0,81%
?P, TS
Deore XT FD-M750
?
34.9 mm
123 g
124 g
+0,81%
TP, TS
Deore XT FD-M750
2003
34.9 mm
123 g
124 g
+0,81%
TP, TS
XX
2010
34.9 mm
118 g
119 g
+0,85%
High Clamp, Top Pull
Ultegra FD-6600-B
2005
31.8 mm
103 g
104 g
+0,97%
 
Centaur
2003
braze-on
92 g
93 g
+1,09%
10-speed
Record 10s
2002
braze-on
91 g
92 g
+1,10%
10-speed
C-16
2006
braze-on
89 g
90 g
+1,12%
 
Record 11s
2009
braze-on
75 g
76 g
+1,33%
 
Record 10s
2005
braze-on
69 g
70 g
+1,45%
10-speed
Deore XT FD-M750-E
?
E-Type
133 g
135 g
+1,50%
TP
Deore FD-M510
2003
34.9 mm
128 g
130 g
+1,56%
DualPull, TS
Deore XT FD-M750
2002
34.9 mm
123 g
125 g
+1,63%
TP, TS
XTR FD-M961
2003
34.9 mm
148 g
151 g
+2,03%
Down Swing, Dual Pull
Deore XT FD-M771
2010
34.9 mm
155 g
159 g
+2,58%
Dual Pull ,TS
Chorus
2004
braze-on
74 g
76 g
+2,70%
10-speed
Deore XT FD-M750-E
2003
E-Type
133 g
138 g
+3,76%
TP
Deore DX FD-M650
1993
28.6 mm
117 g
124 g
+5,98%
DP, DS
Deore XT FD-M760
2004
34.9 mm
158 g
167.75 g
+6,17%
Dual Pull, TS, (+6 g for 31.8 mm insert), averaged (166.5/169)
Record CT QS
2007
braze-on
75 g
80 g
+6,67%
10-speed
Deore DX FD-M651
1993
31.8 mm
117 g
129 g
+10,26%
TP, DS
Red
2008
braze-on
58 g
70.6 g
+21,72%
averaged (70/70/72)
Red
2010
braze-on
58 g
71 g
+22,41%
 
Deore XT FD-M737
?
31.8 mm
138.5 g
TP
XTR
?
?
124 g
 
Deore XT FD-M737
?
34.9 mm
129 g
TP
Deore XT FD-M731
?
34.9 mm
137 g
TP
9
?
?
131 g
 
XTR FD-M952
2000
31.8 mm
115 g
DP, averaged (113/117)
Deore LX FD-M570
2000
31.8 mm
128 g
 
Deore LX FD-M570
2000
34.9 mm
140 g
DP
XTR FD-M950
?
34.9 mm
109 g
DP
Deore LX
1998
31.6 mm
130 g
DP
Deore XT FD-M737
1998
31.8 mm
130 g
TP
XTR FD-M952
2001
?
122 g
DP
Deore LX FD-M570-E
2000
E-type
137 g
TS, DP
Dura-Ace FD-7700
2001
??? mm
82 g
w/ clamp
Dura-Ace FD-7410
1996
braze-on
91 g
clamp type is 97 g
XTR FD-M961
2003
?
148 g
Standard Link Type Dual Pull Front Derailleur
Alivio
1998
34.9 mm
141 g
TP, TS
Deore LX FD-M570
2001
31.8 mm
125 g
DP, TS
STX-RC
1998
34.9 mm
126 g
TP, BS
5
2000
34.9 mm
112 g
TP
Falcon
2001
28.6 mm
165 g
DP
Precision Billet
?
2002
???
126 g
TP/DP, no replaced bolts
XTR FD-M900
1994
34.9 mm
120 g
DP, w/ 2 Ti bolts
TY-22
1997
34.9 mm
186 g
DP, TS
Alivio
2001
34.9 mm
152 g
TP, TS
105 SC (FD-1057)
1998
braze-on
122 g
 
Deore XT FD-M735
1994
34.9 mm
125 g
DP, tuned w/ 2 Ti bolts
Dura-Ace FD-7703
2003
?? mm
134 g
band type, triple
Ultegra FD-6500
2003
28.6 mm
95 g
 
105 FD-1050
1987
28.6 mm
103 g
DS, DP
Adamas AX
1982
28.6 mm
149 g
DP, DS
Exage Country FD-M250
1988
28.6 mm
141 g
DS, DP
Dura-Ace FD-7400
1988
braze-on
90 g
DS, DP
Cyclone
1982
28.6 mm
102 g
DP, DS
Deore XT FD-M739
1996
31.8 mm
129 g
TP, TS
Record
1996
braze-on
93 g
8-speed, DP
Record 10s
2004
34.9 mm
86 g
10-speed, for double chainrings
Record 10s
2004
32 mm
88 g
10-speed, for double chainrings
Chorus
2003
31.8 mm
101 g
10-speed(?)
Exage Motion FD-A250
1989
28.6 mm
126 g
DS, DP
Seven
1977
28.6 mm
116 g
DP, DS
Ultegra FD-6503
2003
31.8 mm
106 g
band type, triple
Dura-Ace FD-7800-BM
2004
31.8 mm
83 g
double, 10-speed
Record 10s
2004
28.6 mm
86 g
10-speed, for double chainrings
XTR FD-M950-E
1998
E-Type
125 g
DP
XTR FD-M953 (tuned)
2002
34.9 mm
125 g
DS, TP, w/ Al bolts
Deore LX FD-M570
2003
34.9 mm
125 g
DP, TS
Daytona
2002
34.9 mm
108 g
10-speed
Dura-Ace FD-7700
2000
31.8 mm
83 g
 
105 FD-5500
2003
31.8 mm
97 g
claimed 84 g for braze-on
Deore XT FD-M738
1998
28.6 mm
137 g
TP, DS, 8-speed
Athena
1994
braze-on
102 g
8-speed
Chorus Triple
2004
31.8 mm
114 g
10-speed
Deore XT FD-M735
1990
28.6 mm
116 g
DP, DS
Ultegra FD-6500
2004
31.8 mm
98 g
 
Tiagra FD-4400
2001
31.8 mm
103 g
 
Deore XT FD-M737
1998
31.8 mm
135 g
DP, DS
Acera FD-M330
2002
31.8 mm
170 g
TP, TS
XTR FD-M901
1998
34.9 mm
121 g
DS, TP
X-Gen
2005
34.9 mm
182 g
DS, Dual Pull, (+4 g for 31.8 mm insert), averaged (181/183)
Dura-Ace FD-7800-F
2005
34.9 mm
102 g
braze-on with SM-AD15 clamp
Deore XT FD-M761 (tuned)
2004
34.9 mm
165.2 g
Dual Pull, DS, tuned with Al bolts
Record CT
2005
32 mm
89 g
10-speed
SM-AD11 braze-on clamp adapter
1999
?
27 g
31.8 mm clamp for braze-on derailleurs
Chorus
2005
31.8 mm
89 g
10-speed
Ultegra FD-6500
1998
28.6 mm
96 g
 
Chorus CT
2005
34.9 mm
93 g
10 speed, for compact crankset
Deore LX FD-M571
2004
34.9 mm
139 g
TP, DS
Record CT
2005
34.9 mm
89 g
10-speed
Deore LX FD-M570
2004
34.9 mm
125 g
DP, TS
Quartz
?
31.8 mm
118 g
Dual Pull
XTR FD-M901
1992
31.8 mm
111 g
TP, DS
105 SC FD-1056-F
1995
braze-on
94.6 g
 
Ultegra FD-6503
2004
braze-on
98 g
9-speed, triple
105 FD-5600-F
2006
braze-on
88 g
 
XTR FD-M970
2007
34.9 mm
126 g
Top Swing, Dual Pull, averaged (125/127)
XTR FD-M970
2007
31.8 mm
133 g
Top Swing, Dual Pull, incl. 31.8 mm adapter
XTR FD-M971
2007
34.9 mm
150 g
Down Swing, Dual Pull
105 FD-5603-B
2007
31.8 mm
126 g
for triple cranksets
Dura-Ace FD-7800-BM
2006
34.9 mm
81.5 g
double, 10-speed
Deore XT FD-M770
2008
34.9 mm
149 g
Dual Pull, TS
Deore XT FD-M771
2008
34.9 mm
160 g
DualPull ,TS, +3 g for 31.8 mm reducing shim
Dura-Ace FD-7803-F
2008
braze-on
107 g
triple, 10-speed
Chorus 11s
2010
31.8 mm
102 g
11-speed
Tourney FD-TZ30
2010
31.8 mm
160 g
DS
Dura-Ace FD-7900-B
2009
28.6 mm
78 g
double, 10-speed
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