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Shift/Brake Units
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Model
Year  
Real
Comments
Dura-Ace Di2 ST-7970
2010
255 g
260 g
+1,96%
pair
Red
2010
280 g
293 g
+4,64%
pair w/out cables
Red
2008
280 g
294 g
+5,00%
pair w/out cables, averaged (292/294)
Record Ergopower 10s (tuned)
2004
305 g
tuned w/ B-T-P carbon clamps
Force
2007
305 g
306 g
+0,33%
pair w/out cables/housings, left/right: 154/152 g, add 28 g for stock cables
XTR ST-M950
1995
309 g
8 speed, w/out optical gear display (+ 19 g)
Red
2008
318 g
pair w/cables, left/right: 157/161 g
Record Ergopower QS 10s
2008
324 g
326 g
+0,62%
 
Record Ergopower 10s
2004
324 g
327.16 g
+0,98%
averaged (324/324/326/328/330/331)
XTR ST-M950
1998
328 g
8 speed, w/out cables
Record Ergopower 10s
2005
324 g
328 g
+1,23%
 
Record Ergopower QS 10s
2007
324 g
330 g
+1,85%
left/right: 164/166 g
Force
2008
332 g
pair w/cables, left/right: 166/166 g
Deore LX ST-M567
1997
335 g
pair, 8-speed, for cantilever brakes
XTR ST-M951
1998
338 g
8-speed, w/out cables, compatible w/ remote bar end shiftes
Rival
2007
340 g
339.5 g
−0,15%
pair w/out cables, averaged (339/340)
Force
2009
341 g
w/ cables (stock)
Super Record Ergopower Ultra-Shift 11s
2010
340 g
341 g
+0,29%
 
Record Ergopower 10s
2003
342 g
344 g
+0,58%
left/right: 171/173 g
Record Ergopower 11s
2009
338 g
348 g
+2,96%
 
Centaur Ergopower Ultra-Shift 10s Carbon
2009
339 g
349 g
+2,95%
averaged (348/350)
Sram
Rival
2009
354 g
pair w/ cables (claimed 320 g w/out)
Xenon Ergopower 9s
2004
357 g
357 g
±0,00%
 
Deore XT ST-M739
1998
360 g
 
Veloce QS Ergopower 10s
2007
351 g
361 g
+2,85%
left/right: 181/180 g
Chorus Ergopower 10s
2005
348 g
365.45 g
+5,01%
averaged (362.9/368)
Dura-Ace ST-7900
2009
379 g
366.5 g
−3,30%
pair, averaged (365/368)
Dura-Ace ST-7900
2008
379 g
368 g
−2,90%
pair, left/right: 185/183 g
Chorus Ergopower 10s
2006
348 g
368 g
+5,75%
 
XTR ST-M952
2000
371 g
w/o gear display
Chorus Ergopower 10s
2004
348 g
373 g
+7,18%
 
Deore XT ST-M737
1994
385 g
pair, 8-speed, for cantilever brakes
Alivio ST-MC12
1996
393 g
390 g
−0,76%
3x7 speed, w/ OGD, canti brakes compatible, left/right: 198/192 g
Deore XT ST-M738
1995
390 g
pair, 8-speed, for cantilever brakes
STX-RC ST-MC33
1995
390 g
pair, 7-speed, for cantilever brakes
XTR ST-M952
2000
414 g
394 g
−4,83%
 
Dura-Ace ST-7700
2000
390 g
395 g
+1,28%
w/o cables and FlightDeck
XTR ST-M960 (tuned)
2003
395 g
w/out indicators and Rapidfire-style shift paddle
Deore LX ST-M564
1994
395 g
pair, 7-speed, for cantilever brakes
Dura-Ace ST-7700 25th Anniversary
1998
397 g
w/out cables
Record Titanium Ergopower 8s
1996
399 g
Campys last & most refined 8-speed shifters
Dura-Ace ST-7700
1999
390 g
400 g
+2,56%
2x9 speed, left/right: 201/199 g
Deore LX ST-M566
1995
400 g
pair, 8-speed, for cantilever brakes
Deore XT ST-M750
2000
410 g
405 g
−1,22%
 
Deore XT ST-M750
2002
410 g
413 g
+0,73%
left/right: 206/207 g
Deore LX ST-M570
2000
410 g
414 g
+0,98%
 
Dura-Ace ST-7800
2005
417 g
419.9 g
+0,70%
10-speed
Microshift
SB-R402C
2013
419 g
420 g
+0,24%
Pair carbon levers
Dura-Ace ST-7800
2004
419 g
420.3 g
+0,31%
10-speed, averaged (418/420/420.5/421/422)
Ultegra ST-6700
2010
447 g
446 g
−0,22%
pair, w/out cables
Dura-Ace ST-7703
2004
448 g
w/out cables
Deore XT ST-M760
2004
450 g
Dual Control Levers for V-Brake
Ultegra ST-6500
1998
447 g
451 g
+0,89%
2x9 speed, left/right: 227/224 g
Ultegra SL ST-6600-G
2008
447 g
451 g
+0,89%
pair
Ultegra SL ST-6600-G
2008
474 g
452 g
−4,64%
2x10-speed, w/out cables
Ultegra ST-6501
2000
455 g
453 g
−0,44%
w/out cables
Deore XT ST-M770
2008
454 g
469 g
+3,30%
Dual Control Levers for V-Brake
XTR ST-M970
2010
472 g
w/out cables
Deore ST-M530
2008
481 g
Dual Control, incl. stock cables (claimed 450 g w/out)
ST-M765
2006
480 g
482 g
+0,42%
Dual Control Levers for Disc Brakes, pair, no cables, no hoses
Ultegra ST-6600
2005
490 g
486 g
−0,82%
2x10-speed
105 ST-5500
2001
463 g
489 g
+5,62%
w/out cables, claimed 471 g for ST-5500-C (Flight Deck compat.)
Ultegra ST-6603
2005
490 g
3x10-speed, w/out cables
NCX-600
?
492 g
 
Ultegra ST-6600
2006
490 g
492 g
+0,41%
2x10-speed
105 ST-5600
2006
493 g
w/out cables
XTR ST-M975
2007
498 g
pair, incl. inner cables (claimed 442 g w/out)
Ultegra ST-6510
2003
500 g
averaged (498/502)
Ultegra ST-6400
1996
525 g
pair
Deore ST-M510
2000
431 g
 
XTR ST-M960
2003
412 g
Dual Control Lever for V-Brake
XTR ST-M965
2003
442 g
Dual Control Lever for Hydraulic Disc Brake
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