VelopediaBicycle Archive · Specification report

2003 Giant Boulder

Velopedia Archive ID 38872

Overview

Model year2003
BrandGiant
ModelBoulder
Bicycle typeMountain bike, non-suspension
Archive ID38872
Original MSRP$220.00
ColorsBlack, Orchid, Red
Sizes14", 17", 19", 21", 23", 25", womens 14", womens 17", womens 19"

Frameset

Frame constructionTIG-welded
Frame materialAluxx aluminum
ForkGiant
Fork materialAluminum, unicrown crown
Rear shockN/A

Drivetrain

Component groupMountain Mix
ShiftersShimano EF-29
Front derailleurShimano C102
Rear derailleurShimano Altus
CranksetSuntour XR-120, 24/34/42 teeth
Bottom bracketTien Hsin, 122.5mm spindle
BB shell width68mm English
Rear cogs7-speed, 13 - 34 teeth
ChainKMC Z51, 1/2 x 3/32"
PedalsResin

Brakes

BrakesAluminum linear-pull brakes, Shimano EF-29 levers

Cockpit & contact points

Headset1 1/8" threadless Aheadset
HandlebarSteel, rise
Handlebar extensionsNot included
StemGiant alloy MTB
SaddleGiant Groove
SeatpostAluminum micro-adjust, 30.8mm diameter

Wheels & tires

HubsAluminum, Q/R
RimsAluminum, 36-hole
SpokesChun Nan stainless steel, 14ga. (2.0mm) straight gauge
Spoke nipplesBrass nipples
Front tire26 x 1.95" center ridge all terrain
Wheel size26" wheels

Geometry · Legacy reference

Top tube586.7 mm
Head-tube angle71.5°
Seat-tube angle73°
Chainstay / rear center424.2 mm
Wheelbase1059.2 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 30, 2026.