Velopedia Bicycle Archive

2005 Giant OCR 3

Original specifications: Shimano Sora · 8-speed · mechanical rear derailleur · 700c wheels.

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At a glance

Model year
2005
Category
Road
Sizes
XS, S, M, L, XL
Colors
Corsa Red, Cloud Blue
In this record
27 specifications · archived image
Archive ID
92892
Model history 6 other years
Original buildALUXX aluminum · Road Mix Triple · 700c wheels

Manufacturer catalog

Published sizes and colors

5 sizes · 2 colors

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

Published sizes

XSSMLXL

Published colors

Corsa RedCloud Blue

Frameset

Frame ConstructionTIG-welded
Frame MaterialALUXX aluminum
ForkFormulaOne
Fork MaterialCarbon fiber/aluminum steerer, aero crown

Drivetrain

Component GroupRoad Mix Triple
ShiftersShimano Sora STI Dual Control
Front DerailleurShimano Sora, braze-on
Rear DerailleurShimano Sora GS
CranksetTruVativ Touro, 30/42/52 teeth
Bottom BracketTruVativ BB7420, 113mm spindle
BB Shell Width68mm English
Rear Cogs8-speed, 12 - 26 teeth
ChainKMC Z72, 1/2 x 3/32"
PedalsSteel cage, resin body

Brakes

BrakesTektro dual pivot brakes, Shimano Sora STI Dual Control levers

Cockpit & Contact Points

Headset1 1/8" threadless integrated
HandlebarAnatomic drop bar
Handlebar ExtensionsNot included
StemGiant Adjustable alloy
SaddleWTB Laser V Comp
SeatpostAluminum micro-adjust, 27.2mm diameter

Wheels & Tires

HubsAluminum, Q/R
RimsAlex DA-22, 32-hole
SpokesStainless steel, 14ga. (2.0mm) straight gauge
Spoke NipplesBrass nipples
Front Tire700 x 25c Michelin Dynamic
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.

Published build52/42/30T · 12–26T · 8-speed
Lowest1.15:1 Highest4.33:1 Total range376%
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Parts & serviceability

Find replacement parts

Original specifications
Chain · Original
KMC Z72, 1/2 x 3/32"
Front tire · Original
700 x 25c Michelin Dynamic
Saddle · Original
WTB Laser V Comp
More parts (5)
Front derailleur · Original
Shimano Sora, braze-on Search: Shimano Sora 8-speed mechanical front derailleur
Rear derailleur · Original
Shimano Sora GS Search: Shimano Sora 8-speed mechanical rear derailleur
Shifters · Original
Shimano Sora STI Dual Control Search: Shimano Sora 8-speed mechanical shifter
Seatpost · Original
Aluminum micro-adjust, 27.2mm diameter
Rims · Original
Alex DA-22, 32-hole

Based on the original build. Confirm the model, size and fit before ordering; installed parts may differ. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases.

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Bike-specific inspection checklist 19 checks based on 5 archived component groups Open checklistClose checklist
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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: 2005 Giant OCR 3 · Road/sport · Published sizes: XS, S, M, L, XL

Archived: Frame: TIG-welded · Fork: FormulaOne · Carbon fiber/aluminum steerer, aero crown

Archived: Group: Road Mix Triple · Shifters: Shimano Sora STI Dual Control · Front derailleur: Shimano Sora, braze-on · Rear derailleur: Shimano Sora GS · Crankset: TruVativ Touro, 30/42/52 teeth · Bottom bracket: TruVativ BB7420, 113mm spindle · Rear cogs: 8-speed, 12 - 26 teeth · Chain: KMC Z72, 1/2 x 3/32"

Archived: Brakes: Tektro dual pivot brakes, Shimano Sora STI Dual Control levers

Archived: Wheel size: 700c wheels · Rims: Alex DA-22, 32-hole · Hubs: Aluminum, Q/R · Front tire: 700 x 25c Michelin Dynamic

Controls and contact points

Archived: Headset: 1 1/8" threadless integrated · Handlebar: Anatomic drop bar · Stem: Giant Adjustable alloy · Seatpost: Aluminum micro-adjust, 27.2mm diameter · Saddle: WTB Laser V Comp · Pedals: Steel cage, resin body

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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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