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2003 EPX 303 - Tiagra

Original specifications: Shimano Tiagra drivetrain · 700c wheels · legacy reference geometry.

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At a glance

Model year
2003
Category
Road
Original MSRP
$1,399.00
Sizes
50cm, 53cm, 56cm, 59cm, 62cm
Colors
Yellow/Carbon
Geometry
Legacy reference
In this record
27 specifications · archived image · original MSRP · geometry
Archive ID
30271
Original buildCarbon fiber composite · Shimano Tiagra · 700c 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

50cm53cm56cm59cm62cm

Published colors

Yellow/Carbon

Frameset

Frame ConstructionBonded/monocoque
Frame MaterialCarbon fiber composite
ForkEpx
Fork MaterialCarbon fiber composite w/aluminum steerer, unicrown crown

Drivetrain

Component GroupShimano Tiagra
ShiftersShimano Tiagra STI Dual Control
Front DerailleurShimano Tiagra, braze-on
Rear DerailleurShimano Tiagra SS
CranksetShimano Tiagra, 39/53 teeth
Bottom BracketShimano BB-UN52, 109.5mm spindle
BB Shell Width68mm English
Rear Cogs9-speed, 12 - 23 teeth
ChainShimano CN-HG53, 1/2 x 3/32"
PedalsNot included

Brakes

BrakesShimano Tiagra Dual Pivot brakes, Shimano Tiagra STI Dual Control levers

Cockpit & Contact Points

Headset1 1/8" integrated Cane Creek
HandlebarITM Super Italian Pro 330
Handlebar ExtensionsNot included
StemItm
SaddleSelle San Marco ODS
SeatpostITM 210, 27.2mm diameter

Wheels & Tires

HubsShimano Tiagra
RimsMavic CXP 21, 32-hole
SpokesStainless steel, 14ga. (2.0mm) straight gauge
Spoke NipplesBrass nipples
Front Tire700 x 23c Continental Ultra 2000 Kevlar
Wheel Size700c 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 Use these as a historical reference, not for size-specific fit.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 tube560 mm
Head-tube angle73°
Seat-tube angle73.5°
Chainstay / rear center406 mm
Wheelbase995 mm
Fork offset / rake43 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.

RPM
Theoretical speed from published tire dimensions; see the evidence note below.
Published build53/39T · 12–23T · 9-speed
Lowest1.70:1 Highest4.42:1 Total range260%
Estimated speed Lowest gear11.9 mph Highest gear31.1 mph

Estimate uses the published front tire 700C×23 · nominal 23-622 as a proxy, corroborated by the wheel size. Rear tire size is not published or verified. Approximate circumference; actual rollout varies with tire and pressure. Theoretical, not a maximum achievable speed.

Bike-specific inspection checklist 19 checks based on 5 archived component groups Open checklistClose checklist
0 of 19 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 EPX 303 - Tiagra · Road race & triathlon · Published sizes: 50cm, 53cm, 56cm, 59cm, 62cm

Archived: Frame: Bonded/monocoque · Fork: EPX · Carbon fiber composite w/aluminum steerer, unicrown crown

Archived: Group: Shimano Tiagra · Shifters: Shimano Tiagra STI Dual Control · Front derailleur: Shimano Tiagra, braze-on · Rear derailleur: Shimano Tiagra SS · Crankset: Shimano Tiagra, 39/53 teeth · Bottom bracket: Shimano BB-UN52, 109.5mm spindle · Rear cogs: 9-speed, 12 - 23 teeth · Chain: Shimano CN-HG53, 1/2 x 3/32"

Archived: Brakes: Shimano Tiagra Dual Pivot brakes, Shimano Tiagra STI Dual Control levers

Archived: Wheel size: 700c wheels · Rims: Mavic CXP 21, 32-hole · Hubs: Shimano Tiagra · Front tire: 700 x 23c Continental Ultra 2000 Kevlar

Controls and contact points

Archived: Headset: 1 1/8" integrated Cane Creek · Handlebar: ITM Super Italian Pro 330 · Stem: ITM · Seatpost: ITM 210, 27.2mm diameter · Saddle: Selle San Marco ODS · Pedals: Not included

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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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