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2003 Giant Iguana Disc

Original specifications: Shimano Deore · 8-speed · mechanical rear derailleur · 26" wheels · legacy reference geometry.

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At a glance

Model year
2003
Category
Mountain
Original MSRP
$580.00
Sizes
14", 17", 19", 21", 23"
Colors
Dream Silver/Silver
Geometry
Legacy reference
In this record
27 specifications · archived image · original MSRP · geometry
Archive ID
38867
Original buildAluxx SL aluminum · Mountain Mix · 26" wheels

Manufacturer catalog

Published sizes and colors

5 sizes · 1 color

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

14"17"19"21"23"

Published colors

Dream Silver/Silver

Frameset

Frame ConstructionTIG-welded
Frame MaterialAluxx SL aluminum
ForkAnswer Manitou Six Sport, 80mm travel
Fork MaterialAluminum/magnesium, single crown

Drivetrain

Component GroupMountain Mix
ShiftersShimano EF-29
Front DerailleurShimano Acera
Rear DerailleurShimano Deore SGS
CranksetGiant Alloy MTB, 22/32/42 teeth
Bottom BracketTien Hsin BB-7420ST, 113mm spindle
BB Shell Width68mm English
Rear Cogs8-speed, 11 - 32 teeth
ChainShimano CN-IG51, 1/2 x 3/32"
PedalsSteel cage w/clips & straps

Brakes

BrakesHayes Mechanical Disc brakes, Shimano EF-29 levers

Cockpit & Contact Points

Headset1 1/8" threadless Aheadset
HandlebarGiant Alloy Riser
Handlebar ExtensionsNot included
StemGiant alloy MTB
SaddleGiant Groove
SeatpostAluminum micro-adjust, 30.8mm diameter

Wheels & Tires

HubsShimano Disc
RimsAluminum, double wall, 32-hole
SpokesChun Nan stainless steel, 14ga. (2.0mm) straight gauge
Spoke NipplesBrass nipples
Front Tire26 x 2.00" Hutchinson Mosquito
Wheel Size26" wheels

Geometry

Legacy reference · 6 measurements

Model-level measurements; the frame size was not recorded. Use these as a historical reference, not for size-specific fit.

All geometry measurementsLegacy reference · 6 measurements
MeasurementLegacy reference
Top tube589.3 mm
Head-tube angle71°
Seat-tube angle72°
Chainstay / rear center424.2 mm
Wheelbase1051.6 mm
Fork offset / rake38.1 mm

The preserved source contains one model-level geometry set without an identified frame size.

Gearing

Chainring ÷ rear sprocket

Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.

Published build42/32/22T · 11–32T · 8-speed
Lowest0.69:1 Highest3.82:1 Total range555%
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Parts & serviceability

Find replacement parts

Original specifications
Chain · Original
Shimano CN-IG51, 1/2 x 3/32"
Retailer offers · Affiliate links
Front tire · Original
26 x 2.00" Hutchinson Mosquito
Retailer offers · Affiliate links
45NRTH Gravdal Studded Wire Bead Clincher 26in Tire Black, 33tpi, 216 Steel Carbide Studs, 26x2

45NRTH Gravdal Studded Wire Bead Clincher 26in Tire Black, 33tpi, 216 Steel Carbide Studs, 26x2

26x2

Replacement option · verify fit

Front derailleur · Original
Shimano Acera Search: Shimano Acera 8-speed mechanical front derailleur
More parts (2)
Rear derailleur · Original
Shimano Deore SGS Search: Shimano Deore 8-speed mechanical rear derailleur
Seatpost · Original
Aluminum micro-adjust, 30.8mm diameter

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 20 checks based on 6 archived component groups Open checklistClose checklist
0 of 20 checked Progress stays in this browser for this bike.

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.

Archived: 2003 Giant Iguana Disc · Mountain bike, front suspension · Published sizes: 14", 17", 19", 21", 23"

Archived: Frame: TIG-welded · Fork: Answer Manitou Six Sport, 80mm travel · Aluminum/magnesium, single crown

Archived: Fork: Answer Manitou Six Sport, 80mm travel

Archived: Group: Mountain Mix · Shifters: Shimano EF-29 · Front derailleur: Shimano Acera · Rear derailleur: Shimano Deore SGS · Crankset: Giant Alloy MTB, 22/32/42 teeth · Bottom bracket: Tien Hsin BB-7420ST, 113mm spindle · Rear cogs: 8-speed, 11 - 32 teeth · Chain: Shimano CN-IG51, 1/2 x 3/32"

Archived: Brakes: Hayes Mechanical Disc brakes, Shimano EF-29 levers

Archived: Wheel size: 26" wheels · Rims: Aluminum, double wall, 32-hole · Hubs: Shimano Disc · Front tire: 26 x 2.00" Hutchinson Mosquito

Controls and contact points

Archived: Headset: 1 1/8" threadless Aheadset · Handlebar: Giant Alloy Riser · Stem: Giant alloy MTB · Seatpost: Aluminum micro-adjust, 30.8mm diameter · Saddle: Giant Groove · Pedals: Steel cage w/clips & straps

Before and during the test ride

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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

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