Bicycle Archive · Specification report

2003 Giant OCR 3

Velopedia Archive ID 38821

Overview

Model year	2003
Brand	Giant
Model	OCR 3
Bicycle type	Road/sport
Archive ID	38821
Original MSRP	$600.00
Colors	Pearl Silver, Red
Sizes	Large, medium, small, xlarge

Frameset

Frame construction	TIG-welded
Frame material	Aluxx SL aluminum
Fork	Giant CroMo Straightblade
Fork material	Chromoly, aero crown
Rear shock	N/A

Drivetrain

Component group	Road Mix Triple
Shifters	Shimano Sora STI Dual Control
Front derailleur	Shimano Sora, braze-on
Rear derailleur	Shimano Sora GS
Crankset	FSA Road, 30/42/52 teeth
Bottom bracket	Sealed cartridge
BB shell width	68mm English
Rear cogs	8-speed, 12 - 25 teeth
Chain	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" 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	Aluminum, Q/R
Rims	Alex, 32-hole
Spokes	Stainless steel, 15ga. (1.8mm) straight gauge
Spoke nipples	Brass nipples
Front tire	700 x 25c Michelin Dynamic
Wheel size	700c wheels

Geometry · Legacy reference

Top tube	555 mm
Head-tube angle	73°
Seat-tube angle	73.5°
Chainstay / rear center	406.4 mm
Wheelbase	980.4 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on October 1, 2026.