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
Frameset
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | ALUXX aluminum |
| Fork | FormulaOne |
| Fork Material | Carbon fiber/aluminum steerer, aero crown |
Drivetrain
| Component 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 |
| BB Shell Width | 68mm English |
| Rear Cogs | 8-speed, 12 - 26 teeth |
| Chain | KMC Z72, 1/2 x 3/32" |
| Pedals | Steel cage, resin body |
Brakes
| Brakes | Tektro dual pivot brakes, Shimano Sora STI Dual Control levers |
|---|
Cockpit & Contact Points
| Headset | 1 1/8" threadless integrated |
|---|---|
| Handlebar | Anatomic drop bar |
| Handlebar Extensions | Not included |
| Stem | Giant Adjustable alloy |
| Saddle | WTB Laser V Comp |
| Seatpost | Aluminum micro-adjust, 27.2mm diameter |
Wheels & Tires
| Hubs | Aluminum, Q/R |
|---|---|
| Rims | Alex DA-22, 32-hole |
| Spokes | Stainless steel, 14ga. (2.0mm) straight gauge |
| Spoke Nipples | Brass nipples |
| Front Tire | 700 x 25c Michelin Dynamic |
| Wheel Size | 700c wheels |
Gearing
Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.
Parts & serviceability
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More parts (5)
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Bike-specific inspection checklist 19 checks based on 5 archived component groups Open checklistClose checklist
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.
Identity and fit
Follow the full used-bike inspection order →Archived: 2005 Giant OCR 3 · Road/sport · Published sizes: XS, S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: TIG-welded · Fork: FormulaOne · Carbon fiber/aluminum steerer, aero crown
Drivetrain
Check drivetrain wear →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"
Brakes
Inspect the brakes →Archived: Brakes: Tektro dual pivot brakes, Shimano Sora STI Dual Control levers
Wheels and tires
Check wheels and tires →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
Before and during the test ride
Follow the full used-bike inspection order →Have you owned this bike?Help document firsthand fit, ride and maintenance details that may no longer be available.
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.




