Shimano Dura Ace 10 speed ~
 Dura
Ace received a full overhaul in 2004. Using 10 cogs in the back, it joins
Campagnolo with that feature. The new 10 speed cassettes will fit right onto
existing 9 speed Shimano bodies! Brand new cranks, utilizing the design of
the current XTR mountain group, use outboard bottom bracket bearings for more stiffness
and increased durability. This
leaves a very sexy right crankarm, though it's still a bit clunky on the left side.
The new shifters have a long and more narrow hand grip that feels
much nicer; it
should be particularly good for riders with extra large hands. Cables continue
to run outside the bar tape (Shimano feels that identifies
their groups in the pro peloton). Brakes are reshaped a bit as are the new hubs.
Gripping power on the front brake has been increased, but
grip on the rear remains the same. This provides a more balanced braking action
at speed. New brake pads should last longer and are now much easier to adjust
for toe-in.
Tech note: The 10 speed cassette will fit on all
current Shimano 9 speed bodies. So, you can continue to use your previous
wheels. However, the 9 speed cassettes will not fit on the new 10 speed hubs.
|
Weights - Shimano Dura Ace |
2003 |
2004 |
| Crank and
bottom bracket |
771 grams |
740 grams |
| STI levers
(pair) |
433 |
420 |
| Rear
derailleur |
196 |
181 |
| Front
derailleur (braze-on) |
76 |
74 |
| Rear brake
caliper |
160 |
155 |
| Front brake
caliper |
151 |
150 |
| Cassette
(12-23) |
160 (9 cogs) |
178 (10 cogs) |
| Chain |
304 |
280 |
Dura Ace 10 speed Crankset ~
Shimano's newest road crank follows the technology of the top ranked XTR
off-road group. The arms are Hollowtech II for lightweight with great stiffness.
The massively oversized (24mm OD) spindle is integrated and included with the
right crank arm. Still requires the oversized BB-7800 bottom bracket cups and
bearings (purchase separately).
 Dura Ace 10 speed Bottom Bracket (BB-7800) ~
Hollowtech II bottom bracket for the new 10 speed crank (above). Features
externally mounted bearings for tremendous stiffness and efficiency. Includes
cups, bearings, and sleeves as the spindle comes integrated with the crank arm
(above).
 Dura Ace 10 speed STI Levers ~
Newly shaped levers for use with the 10 speed derailleurs, crank, and
cassette.
 | reduced stroke distance for faster shifts |
| narrower hood bodies for added comfort |
| fully compatible with 10 speed Flight Deck computer |
Price includes both right and left shifter plus 4
cables & housing
 Dura Ace 10 speed Bar End Shifters ~
For use on the end of aero bars.
Price includes both right and left shifter plus cables
& housing
Dura Ace 10 speed Derailleurs ~
 Rear ~
| Works for both 9 and 10 speed setups! |
| Large 11 tooth pulleys with sealed bearrings for smooth and efficient
running. |
| Titanium upper pivot bolt |
 Front ~
| with nickel plated aluminum cage for increased durability |
 Dura Ace Brake Calipers ~
"Super-SLR" for smooth, consistent braking with lots of grip. Pads are easily
replaced in the aluminum shoe holders. Includes side-mounted variable quick
release.
Price includes both front and rear calipers
Dura Ace 10 speed Hubs ~
Designed exclusively for the new 10 speed system, these hubs will only accept
the new 10 speed cassettes. However, Shimano 9 speed hubs will accept both 9 and
10 speed cassettes. These hubs are compatible with radial, X1, X2, and X3 spoke
lacing patterns. Hubs include Dura Ace aluminum quick release skewers.
Rear ~
Features aluminum freehub body and aluminum axle
Front ~
Dura Ace 10 speed Chain (CN-7800) ~
A super-narrow chain necessary for the new 10 speed cassettes. Features "Hyperglide"
shaping for the fastest shifting. The 6.1mm wide chain is joined at the end by a
special link pin included with each chain.
 Dura Ace 10 speed Cassette ~
| Compatible with all Shimano 9 and 10 speed hubs! |
| Use only with the 10 speed super narrow chain (CN-7800) |
| Features an aluminum carrier to reduce weight and increase rigidity |
| 3 to 4 cogs are titanium and are marked in bold below |
| 11-12-13-14-15-16-17-18-19-21 |
| 11-12-13-14-15-16-17-19-21-23 |
| 12-13-14-15-16-17-18-19-20-21 |
| 12-13-14-15-16-17-18-19-21-23 |
| 12-13-14-15-16-17-19-21-23-25 |
| 12-13-14-15-16-17-19-21-24-27 |
This page was last edited on
03/27/2009
| 
Dura Ace 10 speed Bar End Shifters ~
Rear ~
Front ~ 
Dura Ace Brake Calipers ~
Dura Ace 10 speed Cassette ~
