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| DURA-ACE Road |
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| Performance
without compromise Three key words have
emerged as the theme for the total new
DURA-ACE system: Speed, Smooth and Strength.
Speed and Smooth result in effortless
shifting, improved braking operation,
enhanced ergonomics and updated attractive
feeling and design. Strength is focused
on the critical need for lightweight
without sacrificing rigidity, durability
or precision. "100% Power Transmission"
is the goal pursued by the fusion of
those three concepts.
HB-7800
| Over
locknut |
100mm
|
| Axle
length |
108mm
|
| Stainless
steel ball bearings |
Yes
|
| Sealings |
labyrinth
and contact seals |
| Spoke
holes |
24/28/32/36
holes |
| Spoke
hole circle |
40mm
|
| Hub
shell |
cold
forged aluminum/anodized |
| Weight |
125g
(QR: 60g) |
| Center
to Flange (right) |
37.0mm
|
| Center
to Flange (left) |
37.0mm
|
RD-7800
| Speeds |
10-speed
|
| Max.
Sprocket |
27T
|
| Min.
Sprocket |
11T
|
| Front
Difference |
14T
|
| Total
Capacity |
29T
|
| Guide
Pulley |
sealed
bearing |
| Tension
Pulley |
sealed
bearing |
| 11T
Pulley |
Yes
|
| Bracket
Body |
cold
forged aluminum/anodized |
| Bracket
Pivot Seal |
double
O-rings |
| Plate
Body |
cold
forged aluminum/anodized |
| Plate
Pivot Seal |
double
O-rings |
| Outer
Link |
cold
forged aluminum/anodized |
| Inner
Link |
cold
forged aluminum/anodized |
| Link
Pin Bushings |
fluorine
coated (4) |
| Sealed
Link Pins |
outer/inner
link |
| Outer
Plate |
cold
forged aluminum/anodized |
| Inner
Plate |
aluminum/anodized
|
| Weight |
180g
|
FD-7800-B
| Rear
Compatibility |
10-speed
|
| Top
Gear Teeth |
50
- 56T |
| Chain
Stay Angle |
61°-66°
|
| Dual
SIS |
Yes
|
| Outer
Link |
forged
aluminum/anodized |
| Inner
Link |
forged
aluminum/anodized |
| Link
Bushing |
upper
& lower AB-pins |
| Weight |
79g
(Ø 28.6) |
| Replaceable
Chain Cage |
Yes
|
| O-ring
Seals |
Yes
|
| Spring
Cover |
Yes
|
| Mounting |
band
|
| Applicable
Chainline |
43.5mm
|
| Band
Diameter |
28.6/31.8mm
|
| Band/Brazed-On
Clamp |
forged
aluminum/anodized |
| Chain
Guide |
aluminum/nickel
plated |
FD-7800-F
| Rear
Compatibility |
10-speed
|
| Top
Gear Teeth |
50
- 56T |
| Chain
Stay Angle |
61°-66°
|
| Dual
SIS |
Yes
|
| Outer
Link |
forged
aluminum/anodized |
| Inner
Link |
forged
aluminum/anodized |
| Link
Bushing |
upper
& lower AB-pins |
| Weight |
73g
|
| Replaceable
Chain Cage |
Yes
|
| O-ring
Seals |
Yes
|
| Spring
Cover |
Yes
|
| Mounting |
brazed-on
|
| Applicable
Chainline |
43.5mm
|
| Compatible
Adapter SM-AD11 (31.8mm) |
Yes
|
| Compatible
Adapter SM-AD15 (34.9mm) |
Yes
|
| Band/Brazed-On
Clamp |
forged
aluminum/anodized |
| Chain
Guide |
aluminum/nickel
plated |
FC-7800
| Hollowtech
Crank Arm |
Hollowtech
II |
| Chain
Compatibility |
10-s
Super Narrow HG |
| Number
of Teeth |
53-42T/52-39T/53-39T/50-39T/54-42T/55-42T/56-44T
|
| Bolt
Circle Diameter |
130mm
|
| Crank
Arm Length |
165/167.5/170/172.5/175/177.5/180mm
|
| Crank
Arms |
forged
aluminum/anodized |
| Weight |
740g
(170mm, integrated BB) |
| Chain
Line |
43.5mm
|
| Spindle
Length |
Hollowtech
II |
| Dual
SIS |
Yes
|
| One-Key
Release |
No
|
| Reinforced
Spider |
Yes
|
| Chainrings |
aluminum/anodized
|
| Optional
Chain Guard |
No
|
FH-7800
| Sprockets |
10-speed
|
| Over
locknut |
130mm
|
| Axle
length |
| | | | | | |
