Velopedia Bicycle Archive

2008 BH G4/ Dura-Ace

Original specifications: Shimano Dura-Ace drivetrain · 700c wheels.

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At a glance

Model year
2008
Category
Road
Original MSRP
$6,150.00
Sizes
54cm, 55.5cm, 57cm
Colors
White/Carbon
In this record
22 specifications · original MSRP
Archive ID
13780
Model history 1 other year
Original buildBH G4 Nano Carbon · Shimano Dura-Ace · 700c wheels

Manufacturer catalog

Published sizes and colors

3 sizes · 1 color

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

54cm55.5cm57cm

Published colors

White/Carbon

Frameset

Frame ConstructionMonocoque
Frame MaterialBH G4 Nano Carbon
ForkBH Carbon HM UL
Fork MaterialCarbon, aero crown

Drivetrain

Component GroupShimano Dura-Ace
ShiftersShimano Dura-Ace STI
Front DerailleurShimano Dura-Ace
Rear DerailleurShimano Dura-Ace
CranksetShimano Dura-Ace Hollowtech II, 39/53 teeth
Bottom BracketShimano Hollowtech II
CassetteShimano Dura-Ace
Rear Cogs10-speed, 12 - 25 teeth

Brakes

BrakesShimano Dura-Ace brakes, Shimano Dura-Ace levers

Cockpit & Contact Points

HandlebarFSA SLK Carbon
Handlebar ExtensionsNot included
StemFSA OS-99
SaddlePro Logo Nago Ti
SeatpostIntegrated Carbon Seat Mast

Wheels & Tires

HubsShimano Dura-Ace CL
RimsShimano Dura-Ace CL
Front Tire700 x 23c Vittoria Diamante Pro Light
Wheel Size700c wheels

Gearing

Chainring ÷ rear sprocket

Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.

RPM
Theoretical speed from published tire dimensions; see the evidence note below.
Published build53/39T · 12–25T · 10-speed
Lowest1.56:1 Highest4.42:1 Total range283%
Estimated speed Lowest gear11.0 mph Highest gear31.1 mph

Estimate uses the published front tire 700C×23 · nominal 23-622 as a proxy, corroborated by the wheel size. Rear tire size is not published or verified. Approximate circumference; actual rollout varies with tire and pressure. Theoretical, not a maximum achievable speed.

Bike-specific inspection checklist 19 checks based on 5 archived component groups Open checklistClose checklist
0 of 19 checked Progress stays in this browser for this bike.

This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.

Archived: 2008 BH G4/ Dura-Ace · Road race & triathlon · Published sizes: 54cm, 55.5cm, 57cm

Archived: Frame: Monocoque · Fork: BH Carbon HM UL · Carbon, aero crown

Archived: Group: Shimano Dura-Ace · Shifters: Shimano Dura-Ace STI · Front derailleur: Shimano Dura-Ace · Rear derailleur: Shimano Dura-Ace · Crankset: Shimano Dura-Ace Hollowtech II, 39/53 teeth · Bottom bracket: Shimano Hollowtech II · Cassette: Shimano Dura-Ace · Rear cogs: 10-speed, 12 - 25 teeth

Archived: Brakes: Shimano Dura-Ace brakes, Shimano Dura-Ace levers

Archived: Wheel size: 700c wheels · Rims: Shimano Dura-Ace CL · Hubs: Shimano Dura-Ace CL · Front tire: 700 x 23c Vittoria Diamante Pro Light

Controls and contact points

Archived: Handlebar: FSA SLK Carbon · Stem: FSA OS-99 · Seatpost: Integrated Carbon Seat Mast · Saddle: Pro Logo Nago Ti

Before and during the test ride

Follow the full used-bike inspection order →

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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

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