Velopedia Bicycle Archive

Compare Bicycles

Compare published geometry, gearing and specifications for up to three bicycles.

Road · Non-electric

2003 Giant OCR 1

Selected size
Original MSRP: $1,100.00

View record

Road · Non-electric

2005 Giant OCR 1

Selected size: Not published
Original MSRP: Not documented

View record

1 of 2 bicycles

At a glance

Key differences

Supported differences are shown below. Data limitations are labeled separately.

Data limitation
No geometry is recorded for 2005 Giant OCR 1.

Gearing comparison

Lower gears help on climbs. Higher gears suit higher speeds.

Pedal cadence

RPM

Speed units

RPM = pedal turns per minute.

2003 Giant OCR 1Size Legacy reference · 52/42/30T · 12–25T · 9-speed

Lowest1.20:1Highest4.33:1Total range361%

Estimated speed at 90 RPMLowest gear8.5 mphHighest gear30.7 mph

Uses front tire 700C×25; rear size isn’t listed.

2005 Giant OCR 152/42/30T · 12–26T · 9-speed

Lowest1.15:1Highest4.33:1Total range376%

Estimated speed at 90 RPMLowest gear8.2 mphHighest gear30.7 mph

Uses front tire 700C×25; rear size isn’t listed.

How it works

Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.

Speeds are estimates from tire size and pedal cadence. Actual speeds vary.

Try other gearing

Complete specification tableShows different published values and gaps where a bicycle lacks data. Different wording reflects source language, not necessarily different components. Swipe for more columns.

Specification

2003 Giant OCR 1

2005 Giant OCR 1

Overview

Model Year

2003

2005

Brand

Giant

Model

OCR 1

Bicycle Type

Road race & triathlon

Original MSRP

$1,100.00

Not documented

Colors

Black/Pearl Silver

Racing Blue, Silver Lining

Sizes

S, M, L, XL

XS, S, M, L, XL

Weight

—

Frameset

Frame Construction

TIG-welded

Frame Material

Aluxx SL aluminum

ALUXX aluminum

Fork

Giant Composite Aero

FormulaOne

Fork Material

Carbon fiber composite w/aluminum steerer, aero crown

Carbon fiber/aluminum steerer, aero crown

Drivetrain

Component Group

Shimano 105 Triple

Road Mix Triple

Shifters

Shimano 105 STI Dual Control

Shimano Ultegra STI Dual Control

Front Derailleur

Shimano 105, braze-on

Rear Derailleur

Shimano 105 GS

Shimano Ultegra

Crankset

Shimano 105 Triple, 30/42/52 teeth

TruVativ Elita, 30/42/52 teeth

Bottom Bracket

Shimano BB-5500

TruVativ GIGA pipe SL, 118mm spindle

BB Shell Width

68mm English

Rear Cogs

9-speed, 12 - 25 teeth

9-speed, 12 - 26 teeth

Chain

1/2 x 3/32"

Pedals

Shimano PD-M505 SPD

Brakes

Shimano 105 Dual Pivot brakes, Shimano 105 STI Dual Control levers

Dual pivot long-reach brakes, Shimano Ultegra STI Dual Control levers

Cockpit & Contact Points

Headset

1" Aheadset

1 1/8" threadless integrated

Handlebar

Anatomic drop bar

Handlebar Extensions

Not included

Stem

Giant Adjustable alloy

Easton EA50

Saddle

Giant OCR

WTB Laser V Race

Seatpost

Aluminum micro-adjust, 27.2mm diameter

Carbon fiber, 27.2mm diameter

Wheels & Tires

Hubs

Shimano 105

Aluminum, Q/R

Rims

Mavic CXP 22, 32-hole

Xero XSR-3, 20-hole/24-hole

Spokes

Stainless steel

Stainless steel, 14ga. (2.0mm)

Spoke Nipples

Brass nipples

Front Tire

700 x 25c Michelin Dynamic

Wheel Size

700c wheels

Geometry · choose a size for each bicycle

Geometry size

—

Head-tube angle

73°

—

Seat-tube angle

73.5°

—

Chainstay / rear center

406.4 mm

—

Wheelbase

985.5 mm

—

Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run. Legacy reference geometry is model-level historical data whose corresponding frame size is not identified; compare those dimensions as reference values rather than size-normalized fit data.

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