Velopedia Bicycle Archive

2003 Norco Alta

Original specifications: Road Mix drivetrain · 700c wheels.

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At a glance

Model year
2003
Category
Road
Sizes
16", 18", 20"
Colors
Blue
In this record
29 specifications · archived image
Archive ID
39000
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Manufacturer catalog

Published sizes and colors

3 sizes · 1 color

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

Published sizes

16"18"20"

Published colors

Blue

Frameset

Frame ConstructionTIG-welded
Frame Material4130 chromoly
Fork MaterialChromoly, unicrown crown
Rear ShockN/A

Drivetrain

Component GroupRoad Mix
ShiftersShimano Sora STI Dual Control
Front DerailleurShimano Sora Triple, clamp-on/28.6mm
Rear DerailleurShimano Tiagra GS
CranksetShimano Sora Triple, 30/42/52 teeth
Bottom BracketShimano BB-UN40
BB Shell Width68mm English
Rear Cogs8-speed, 12 - 23 teeth
ChainShimano CN-IG50, 1/2 x 3/32"
PedalsVictor 992

Brakes

BrakesTektro Oryx brakes, Shimano Sora STI Dual Control levers

Cockpit & Contact Points

Headset1" Chin Haur CH-903B
HandlebarAnatomic drop bar
Handlebar ExtensionsNot included
StemQuill
SaddleSelle San Marco Ods Fusion 3
SeatpostLeechi SP-222, 26.8mm diameter

Wheels & Tires

HubsShimano 3300
RimsAlex DM-18, 36-hole
SpokesDT stainless steel, 14ga. (2.0mm) straight gauge
Front Tire700 x 28c Panaracer Pasela, kevlar
Wheel Size700c wheels

Parts & serviceability

Find replacement parts

3 top part searches
ChainMatching fit standard
Shimano CN-IG50, 1/2 x 3/32" Exact archived model
Front tireMatching fit standard
700 x 28c Panaracer Pasela, kevlar Named tire and published size
Bottom bracketExact archived part
Shimano BB-UN40 Exact archived model
More qualified parts (6)
CranksetQualified part search
Shimano Sora Triple, 30/42/52 teeth Named archived component — verify exact version
Front derailleurMatching configuration
Shimano Sora Triple, clamp-on/28.6mm Interpreted as Shimano Sora · 8-speed · mechanical Named component · published drivetrain speed — verify exact version
Rear derailleurMatching configuration
Shimano Tiagra GS Interpreted as Shimano Tiagra · 8-speed · mechanical Named component · published drivetrain speed — verify exact version
ShiftersQualified part search
Shimano Sora STI Dual Control Interpreted as Shimano Sora · 8-speed · mechanical Named component · published drivetrain speed — verify exact version
SeatpostMatching fit standard
26.8 mm seatpost Published diameter — verify length and setback
RimsQualified part search
Alex DM-18, 36-hole Named archived component — verify dimensions

Searches use the archived manufacturer specification, not the components currently installed on a particular bicycle. Confirm the exact model, size and fit before ordering. 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. Commercial relationships do not influence Archive specifications or analysis.

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Used-bike inspection

If you’re buying this bike used

Before any test ride: both brakes should stop the bike firmly and release cleanly; both wheels should run true and be securely attached; tires should have no casing damage; and the headset, handlebar, stem, cranks and pedals should have no looseness or play.

Follow the full used-bike inspection order →
  • FrameCheck paint chips, vent holes and the inside of the seat tube for corrosion. Also look for dents, bent tubes and cracking around welded or brazed joints.Inspect the frame and fork →
  • BrakesTest each brake separately and confirm it stops firmly and releases cleanly. Inspect the pads and braking surfaces for wear or contamination, and check the cables or hoses for damage.Inspect the brakes →
  • DrivetrainShift through every gear under light load and measure chain wear. Confirm that the shifter, derailleur, chain and cassette belong to the same 8-speed system.Check drivetrain wear →
  • Wheels & tiresSpin both wheels and watch the rims for side-to-side or vertical movement. Check for dents, cracks, loose or uneven spokes and hub play, then inspect both tire casings for cuts, cracking or exposed threads.Check wheels and tires →
Bike-specific inspection checklist 18 checks based on 5 archived component groups Open checklistClose checklist
0 of 18 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 Norco Alta · Road/sport · Published sizes: 16", 18", 20"

Archived: Frame: TIG-welded · Fork: · Chromoly, unicrown crown

Archived: Group: Road Mix · Shifters: Shimano Sora STI Dual Control · Front derailleur: Shimano Sora Triple, clamp-on/28.6mm · Rear derailleur: Shimano Tiagra GS · Crankset: Shimano Sora Triple, 30/42/52 teeth · Bottom bracket: Shimano BB-UN40 · Rear cogs: 8-speed, 12 - 23 teeth · Chain: Shimano CN-IG50, 1/2 x 3/32"

Archived: Brakes: Tektro Oryx brakes, Shimano Sora STI Dual Control levers

Archived: Wheel size: 700c wheels · Rims: Alex DM-18, 36-hole · Hubs: Shimano 3300 · Front tire: 700 x 28c Panaracer Pasela, kevlar

Controls and contact points

Archived: Headset: 1" Chin Haur CH-903B · Handlebar: Anatomic drop bar · Stem: Quill · Seatpost: Leechi SP-222, 26.8mm diameter · Saddle: Selle San Marco Ods Fusion 3 · Pedals: Victor 992

Before and during the test ride

Follow the full used-bike inspection order →

Build relationships are limited to the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.

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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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