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Rear Derailleurs
Weight unit
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Manufacturer
Model
Year  
Comments
Athena
1994
258 g
short cage, 8-speed
Centaur 10s
2003
229 g
230 g
+0,44%
medium cage, 10-speed
Centaur 10s
2003
226.8 g
short cage, 10-speed
Chorus 10s
2003
209 g
212 g
+1,44%
short cage, 10-speed, using a Fiberlyte back plate saves 4 g
Chorus 10s
2004
202 g
203 g
+0,50%
short cage, 10-speed, averaged (200/206)
Chorus 10s
2005
202 g
204 g
+0,99%
short cage, 10-speed, averaged (203/205)
Daytona
2002
226 g
short cage, 9-speed
Record
1990
208 g
6/7-speed
Record
1996
247 g
8-speed
Record 10s
2001
187 g
short cage, 10-speed
Record 10s
2002
187 g
192 g
+2,67%
short cage, 10-speed
Record 10s
2003
205 g
204 g
−0,49%
long cage, 10-speed
Record 10s
2003
193 g
196 g
+1,55%
medium cage, 10-speed
Record 10s
2004
193 g
186 g
−3,63%
medium cage, 10-speed
Record 10s
2004
184 g
185.5 g
+0,82%
short cage, 10-speed, averaged (184/185/186/187)
Record 10s
2005
193 g
188 g
−2,59%
medium cage, 10-speed, averaged (188/188)
Record 10s
2005
184 g
185 g
+0,54%
short cage, 10-speed
Record 10s
2007
184 g
188 g
+2,17%
short cage, 10-speed
Record 10s
2008
184 g
187 g
+1,63%
short cage, 10-speed
Record 11s
2009
179 g
180 g
+0,56%
 
Super Record
1983
188 g
 
Super Record 11s
2010
172 g
174 g
+1,16%
 
Veloce 10s
2007
250 g
249 g
−0,40%
short cage, 10-speed
Xenon
2004
254 g
257 g
+1,18%
short cage, 9-speed
Xenon 9s
2004
263 g
261 g
−0,76%
long cage, 9-speed, not 100% sure of year
Lightweight RD
2008
120 g
122 g
+1,67%
shifts not really good compared to Campy or Shimano
STS Simple Tension Seeker
2007
103 g
118 g
+14,56%
 
Tension Seeker
2003
91 g
92 g
+1,10%
singlespeed tensioner w/ alloy pulley
Campagnolo Record/Chorus inner cage plate
2004
6 g
6 g
±0,00%
9/10-speed carbon fibre, 55 mm pulley centres
Shimano Dura-Ace/Ultegra inner cage plate
2003
6 g
6 g
±0,00%
9-speed, carbon fibre, 49.4 mm pulley centres
SSC 851
1986
165 g
171 g
+3,64%
non-indexed, dark grey ano., held together w/ circlips, cartridge bearing pulleys, adjustable lower cage
ZAP
1996
241 g
319 g total weight incl. electronic shifters and batteries
Microshift
RD-R69SC
2012
190 g
194 g
+2,11%
Carbon cage model
CNC rear derailleur
1995
186 g
 
Melvin (singlespeed tensioner)
2003
101 g
silver non-anodize color (sure?), incl. all hardware
Precision Billet
Proshift
?
180 g
 
Precision Billet
Proshift
2002
176 g
67 mm (year correct?)
Precision Billet
Proshift MK2
2003
178 g
 
Kettenspanner 8250 (chain tensioner)
2001
110 g
106 g
−3,64%
spacers +2 g; weight claim is for '03 model
Sachs
Plasma
1998
192 g
long cage
Sachs
Quartz
1998
239 g
 
105 RD-1050
1987
257 g
short cage
105 RD-1051
1987
238 g
short cage
105 RD-5500-GS
2003
232 g
229 g
−1,29%
long cage
105 RD-5501-SSL
2004
228 g
229 g
+0,44%
short cage, black
105 RD-5600-SS
2009
221 g
220 g
−0,45%
short cage, max 27 T.
2200 RD-2200
2002
288 g
8-speed
600 Arabesque
1980
192 g
 
600 RD-6207
1984
201 g
short cage
Acera RD-M340-L
2004
338 g
long cage, 7/8-speed, black
Acera X
1997
271 g
long cage
Alivio RD-M410
2007
312 g
averaged (312/312)
Alivio RD-MC14
1996
280 g
279 g
−0,36%
long cage
Altus C10 RD-CT10-SGS
1993
282 g
long cage
Altus RD-CT95
2007
325 g
averaged (324/326)
Capreo RD-F700
2004
292 g
9-speed, 86 mm cage
Deore DX RD-M650-SGS
1993
320 g
310 g
−3,13%
long cage
Deore II RD-MT62
1989
255 g
Short Cage
Deore LX
1998
281 g
long cage
Deore LX
1998
249 g
short cage(?)
Deore LX RD-M570
1999
288 g
long
Deore LX RD-M570
2002
288 g
long cage
Deore LX RD-M580-SGS
2005
311 g
308 g
−0,96%
long cage
Deore RD-DE10
1982
218 g
middle cage
Deore RD-M510
2001
300 g
296 g
−1,33%
long cage, black
Deore RD-M510
2003
300 g
300 g
±0,00%
long cage
Deore RD-M510-L
2002
300 g
long cage
Deore RD-M510-L
2004
300 g
301 g
+0,33%
long cage
Deore RD-M530
2007
316 g
317.5 g
+0,47%
averaged (317/318)
Deore XT
?
245 g
 
Deore XT
1998
249 g
 
Deore XT RD-M737
1994
240 g
long cage
Deore XT RD-M737 (tuned)
1994
224 g
tuned w/ Al hanger bolt
Deore XT RD-M750-GS
2000
245 g
242 g
−1,22%
 
Deore XT RD-M750-GS
2002
245 g
short cage
Deore XT RD-M750-GS (tuned)
2002
217 g
short cage, fixing bolt replaced w/ SRP Al bolt
Deore XT RD-M750-SGS
1999
255 g
247 g
−3,14%
long cage
Deore XT RD-M750-SGS
2002
255 g
255 g
±0,00%
long cage
Deore XT RD-M750-SGS
2003
255 g
246 g
−3,53%
long cage
Deore XT RD-M760-GS
2004
232 g
230 g
−0,86%
short cage
Deore XT RD-M760-GS
2005
232 g
231 g
−0,43%
short cage
Deore XT RD-M760-SGS
2004
265.25 g
long cage, averaged (263/265/266/267)
Deore XT RD-M761-SGS
2007
265 g
266.6 g
+0,60%
long cage, averaged (266/267/267)
Deore XT RD-M772-GS
2008
227 g
223 g
−1,76%
medium cage
Deore XT RD-M772-SGS
2008
225.5 g
long cage, Shadow type, averaged (225/226)
Dura-Ace Di2 RD-7970
2010
225 g
221 g
−1,78%
 
Dura-Ace RD-7401
1987
209 g
 
Dura-Ace RD-7410
1996
207 g
8 speed, max 26T.
Dura-Ace RD-7700
1999
195 g
195 g
±0,00%
 
Dura-Ace RD-7700
2001
195 g
195 g
±0,00%
max 27T.
Dura-Ace RD-7700
2002
195 g
197 g
+1,03%
max 27T.
Dura-Ace RD-7700
2003
195 g
196 g
+0,51%
max. 27T.
Dura-Ace RD-7800-GS
2005
192 g
190 g
−1,04%
long cage for triple
Dura-Ace RD-7800-SS
2004
180 g
181.1 g
+0,61%
9/10-speed compatible, averaged (180/180.5/181/181.6/181.66/182)
Dura-Ace RD-7800-SS
2005
182.6 g
averaged (180/182/186)
Dura-Ace RD-7800-SS
2007
180 g
182.4 g
+1,33%
averaged (182/182.8)
Dura-Ace RD-7800-SS (tuned)
2004
173 g
w/ SRP Al bolt kit (hanger, pulleys, cable clamp)
Dura-Ace RD-7800-SS (tuned)
2005
176 g
w/ SRP Al bolt kit
Dura-Ace RD-7900-SS
2009
166 g
165.5 g
−0,30%
averaged (165/166)
Exage 300LX RD-M300-SGS
1991
317 g
long cage
Exage Motion RD-A250
1989
271 g
short cage
Mountain LX RD-M452
1989
320 g
319 g
−0,31%
SGS Super Long Cage
Saint RD-M810-SS
2009
240 g
230 g
−4,17%
 
Santé RD-5001
1988
193 g
short cage
Sky Lark
1967
273 g
short cage, incl. integrated derailleur hanger, from late 60s
SLX RD-M662-SGS
2008
258 g
261.5 g
+1,36%
averaged (261/262)
STX-RC RD-MC38
1997
292 g
long cage
Tiagra RD-4400-GS
2003
280 g
283 g
+1,07%
long cage, 9 -peed for road triples
Tiagra RD-4400-SS
2003
265 g
for double crank
Tiagra RD-4500-SS
2007
257 g
 
Tourney 10
1988
294 g
short cage
UItegra RD-6500-SS
1998
215 g
216 g
+0,47%
short cage
Ultegra RD-6500-GS
2004
221 g
225 g
+1,81%
long cage
Ultegra RD-6500-SS
2001
215 g
218 g
+1,40%
short cage, max. 27T.
Ultegra RD-6500-SS
2003
215 g
217.1 g
+0,98%
short cage, max. 27T., averaged (216.2/218)
Ultegra RD-6600-GS
2008
219 g
217 g
−0,91%
long cage
Ultegra RD-6600-SS
2005
209 g
205 g
−1,91%
short cage
Ultegra RD-6600-SS
2006
209 g
206 g
−1,44%
short cage
Ultegra RD-6600-SS
2007
209 g
206 g
−1,44%
short cage
Ultegra RD-6700-GS
2010
199 g
200 g
+0,50%
long cage
Ultegra RD-6700-SS
2010
190 g
189.4 g
−0,32%
short cage
Ultegra RD-6700-SS
2012
189 g
186 g
−1,59%
10 speed short cage
Ultegra SL RD-6600G-SS
2009
201 g
short cage
XTR RD-M900
1993
214 g
medium cage, tuned w/ Al mounting bolt
XTR RD-M910
1995
219 g
averaged (218/220)
XTR RD-M950
1997
200 g
pulleys and cable bolts tuned
XTR RD-M950-GS
1997
207 g
short cage
XTR RD-M952-GS
1999
207 g
207 g
±0,00%
short cage
XTR RD-M952-GS
2000
207 g
211 g
+1,93%
short cage
XTR RD-M952-GS
2002
210 g
short cage
XTR RD-M952-GS (tuned)
2001
205 g
short cage (Ti & Al bolts)
XTR RD-M952-GS (tuned)
2001
192 g
short cage (Ti cable clamp bolt, Al Pivot & pulley bolts)
XTR RD-M952-GS (tuned)
2002
194.8 g
Al cable clamp, fixing bolt and pulley bolts, Fibre Lyte carbon inner plate, drilled pulleys
XTR RD-M952-SGS
1999
233 g
long cage
XTR RD-M952-SGS
2000
236 g
long cage
XTR RD-M952-SGS
2002
235.75 g
long cage, averaged (234/235/236/238)
XTR RD-M953-SGS
1999
207 g
207 g
±0,00%
long cage, Rapid Rise
XTR RD-M960-GS
2003
198 g
198 g
±0,00%
Low Normal Rear Derailleur, averaged (197/198/199)
XTR RD-M960-GS
2004
198 g
199 g
+0,51%
short cage
XTR RD-M960-SGS
2003
200 g
long cage
XTR RD-M960-SGS
2004
203 g
long cage
XTR RD-M960-SGS
2005
203 g
long cage, averaged (202/204)
XTR RD-M970-SGS
2007
199 g
199 g
±0,00%
long cage, low normal
XTR RD-M971-GS
2007
196.8 g
short cage, top normal, averaged (196.5/197/197)
XTR RD-M971-SGS
2007
198 g
long cage, top normal, averaged (197/199)
XTR RD-M972-GS
2008
180 g
180 g
±0,00%
medium cage, Shadow type
XTR RD-M972-SGS
2008
182 g
181 g
−0,55%
long cage, Shadow type
RD-Durolux-SGX
2005
281 g
compatible w/ Shimano & ESP, pulleys 13T/15T, capacity 45T
ESP 4.0
2001
239 g
long cage, averaged (237/241)
ESP 5.0
2002
320 g
 
ESP 7.0
2000
286 g
long cage
ESP 7.0
2002
253 g
 
ESP 9.0
2001
258 g
 
ESP 9.0
2003
265 g
 
ESP 9.0 SL
?
198 g
 
ESP 9.0 SL
1998
182 g
182 g
±0,00%
short cage
ESP 9.0 SL
1999
198 g
193 g
−2,53%
long cage, fake carbon body
ESP 9.0 SL
1999
182 g
187 g
+2,75%
short cage
ESP 9.0 SL
2001
248 g
 
ESP 9.0 SL medium cage
2002
250 g
 
Force
2007
176 g
178 g
+1,14%
averaged (178/178/178)
Force
2010
178 g
174 g
−2,25%
 
Plasma
?
193 g
averaged (192/194)
Plasma D.I.R.T.
2001
207 g
 
Quarz
?
200 g
 
Red
2008
153 g
146 g
−4,58%
 
Red
2010
153 g
143 g
−6,54%
 
Rival
2007
188 g
189 g
+0,53%
 
X.0
2002
208 g
204 g
−1,92%
long cage, avrg (206/210)
X.7
2004
268 g
long cage
X.7
2005
275 g
270 g
−1,82%
long cage
X.7
2007
270 g
268 g
−0,74%
long cage
X.9
2004
255 g
260 g
+1,96%
long cage
X.9
2004
248.5 g
medium cage, averaged (245/252)
X.9
2005
244.5 g
long cage, averaged (243/246)
X.9
2005
237.3 g
medium cage, averaged (236/236/240)
X.9
2006
238 g
239 g
+0,42%
long cage
X.9
2007
219.87 g
medium cage, manufactured 09 May 07, Mettler PM2000 balance
X.9
2007
212 g
206 g
−2,83%
short cage
X.O
2003
210 g
210.5 g
+0,24%
long cage, averaged (210/211)
X.O
2003
200 g
200 g
±0,00%
medium cage
X.O
2004
210 g
211 g
+0,48%
long cage, averaged (210/212)
X.O
2004
200 g
205 g
+2,50%
medium cage, averaged (204/206)
X.O
2005
204 g
207.5 g
+1,72%
medium cage, averaged (207/208)
X.O
2006
194 g
Carbon, medium cage
Cyclone
1980
175 g
This is a 1973 model
Cyclone 7000
1986
214 g
 
Cyclone M-II
1985
170 g
 
Cyclone M-II GT
1984
172 g
Friction derailleur, long cage touring model
NCX-600
2001
297 g
 
Seven
1977
308 g
short cage
Superbe Pro 8s
1989
201 g
short cage, year is 1989 or later
suntour
Vx
1980
203 g
Short cage
Vx-S
1980
213 g
This 1979 derailleur has a mid-length cage
XC 9010 Accushift
1989
264 g
long cage
Singulator
2001
107 g
chain tensioner for singlespeed
Singulator
2004
124 g
chain tensioner for singlespeed
Altore 366
2003
179 g
179 g
±0,00%
dry weight, + 1 g for grease
Sereo 130
2003
177 g
177 g
±0,00%
 
Sereo 130
2007
167 g
167 g
±0,00%
 
Venda
?
193 g
 
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