Velopedia Bicycle Archive
2002 Giant OCR-1
Original specifications: Shimano 105 Triple drivetrain · 700c wheels · legacy reference geometry.
Selling this bike? Create a shareable bike record
At a glance
- Model year
- 2002
- Category
- Road
- Original MSRP
- $1,000.00
- Sizes
- S, M, L
- Colors
- Black/Red
- Geometry
- Legacy reference
- In this record
- 27 specifications · archived image · original MSRP · geometry
- Archive ID
- 91703
Original buildAluxx SL aluminum · Shimano 105 Triple · 700c wheels
Frameset
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | Aluxx SL aluminum |
| Fork | Giant Composite Aero |
| Fork Material | Carbon fiber composite w/aluminum steerer, aero crown |
Drivetrain
| Component Group | Shimano 105 Triple |
|---|---|
| Shifters | Shimano 105 STI Dual Control |
| Front Derailleur | Shimano 105, braze-on |
| Rear Derailleur | Shimano 105 GS |
| Crankset | Shimano 105 Triple, 30/42/52 teeth |
| Bottom Bracket | Shimano BB-5500 |
| BB Shell Width | 68mm English |
| Rear Cogs | 9-speed, 12 - 25 teeth |
| Chain | Shimano CN-HG72, 1/2 x 3/32" |
| Pedals | Shimano PD-M505 SPD |
Brakes
| Brakes | Shimano 105 Dual Pivot brakes, Shimano 105 STI Dual Control levers |
|---|
Cockpit & Contact Points
| Headset | 1" Aheadset |
|---|---|
| Handlebar | Anatomic drop bar |
| Handlebar Extensions | Not included |
| Stem | Giant Adjustable alloy |
| Saddle | Giant OCR |
| Seatpost | Aluminum micro-adjust, 27.2mm diameter |
Wheels & Tires
| Hubs | Shimano 105 |
|---|---|
| Rims | Mavic CXP 21, 32-hole |
| Spokes | Stainless steel |
| Spoke Nipples | Brass nipples |
| Front Tire | 700 x 23c Hutchinson Reflex |
| Wheel Size | 700c wheels |
Geometry
Model-level measurements; the frame size was not recorded. Use these as a historical reference, not for size-specific fit.
Reference frame view
Select an available measurement to locate it on the frame.
All geometry measurementsLegacy reference · 5 measurements
| Measurement | Legacy reference |
|---|---|
| Top tube | 555 mm |
| Head-tube angle | 73° |
| Seat-tube angle | 73.5° |
| Chainstay / rear center | 406.9 mm |
| Wheelbase | 980.9 mm |
The preserved source contains one model-level geometry set without an identified frame size.
Gearing
Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.
Parts & serviceability
Find replacement parts

Continental Gatorskin Clincher Tire Black, Folding Black, 700x23
700x23
Replacement option · verify fit
More parts (6)

Cervelo SP19 Carbon Seatpost Black, 27.2mm, 0mm offset, 350mm long
27.2mm, 0mm offset, 350mm long
Replacement option · verify fit
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. Velopedia may also earn from qualifying retailer purchases.
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: 2002 Giant OCR-1 · Road race & triathlon · Published sizes: S, M, L
Frame and fork
Inspect the frame and fork →Archived: Frame: TIG-welded · Fork: Giant Composite Aero · Carbon fiber composite w/aluminum steerer, aero crown
Drivetrain
Check drivetrain wear →Archived: Group: Shimano 105 Triple · Shifters: Shimano 105 STI Dual Control · Front derailleur: Shimano 105, braze-on · Rear derailleur: Shimano 105 GS · Crankset: Shimano 105 Triple, 30/42/52 teeth · Bottom bracket: Shimano BB-5500 · Rear cogs: 9-speed, 12 - 25 teeth · Chain: Shimano CN-HG72, 1/2 x 3/32"
Brakes
Inspect the brakes →Archived: Brakes: Shimano 105 Dual Pivot brakes, Shimano 105 STI Dual Control levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 700c wheels · Rims: Mavic CXP 21, 32-hole · Hubs: Shimano 105 · Front tire: 700 x 23c Hutchinson Reflex
Controls and contact points
Archived: Headset: 1" Aheadset · Handlebar: Anatomic drop bar · Stem: Giant Adjustable alloy · Seatpost: Aluminum micro-adjust, 27.2mm diameter · Saddle: Giant OCR · Pedals: Shimano PD-M505 SPD
Before and during the test ride
Follow the full used-bike inspection order →Have you owned this bike?Help preserve its real-world history by sharing your owner experience.
Share the details that would help another rider understand how this model fits, rides and holds up over time. Velopedia reviews every contribution before publication.
Already contributed? Send me a fresh private edit link
For privacy, Velopedia shows the same confirmation whether or not an experience exists.
Checking current listings…
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.





