Velopedia Bicycle Archive

2003 Norco VPS-Atomik

Original specifications: Downhill Mix drivetrain · 26" wheels · legacy reference geometry.

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At a glance

Model year
2003
Category
Mountain
Sizes
S, M, L
Colors
Army Green, Silver
Geometry
Legacy reference
In this record
27 specifications · archived image · geometry
Archive ID
38977
Model history 1 other year
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Manufacturer catalog

Published sizes and colors

3 sizes · 2 colors

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

Published sizes

SML

Published colors

Army GreenSilver

Frameset

Frame ConstructionMonocoque
Frame Material6061 T6 aluminum
ForkMarzocchi DJ 3, 130mm travel
Fork MaterialAluminum/magnesium, single crown
Rear ShockFox Vanilla R, 4.5" - 5.5" adjustable travel

Drivetrain

Component GroupDownhill Mix
ShiftersShimano Deore rear/SRAM Attack Shorty front
Front DerailleurShimano Alivio, top-pull/clamp-on 31.8mm
Rear DerailleurShimano Deore
CranksetTruVativ Hussefelt w/ bashguard, 22/32 teeth
Bottom BracketTruVativ ISIS spline
Rear Cogs9-speed, 11 - 34 teeth
ChainSRAM PC-59, 1/2 X 3/32"
PedalsWellgo LU-A18 platform w/ replaceable pins

Brakes

BrakesHayes HFX-9 Hydraulic Disc brakes, Hayes Hydraulic levers

Cockpit & Contact Points

Headset1 1/8" threadless FSA TH-858 Semi Cartridge
HandlebarAxiom riser
Handlebar ExtensionsNot included
StemAluminum Ahead type
SaddleSetlaz, 8mm rails
SeatpostKalloy SP-341, 30.0mm diameter

Wheels & Tires

HubsFront: Shimano HB-M525, Rear: Shimano FH-M525
RimsSun Rims Single Track
SpokesDT stainless steel, 14ga. (2.0mm) straight gauge
Spoke NipplesBrass nipples
Front Tire26 x 2.35" Kenda Kinetics
Wheel Size26" wheels

Historical reference geometry

Geometry

Legacy reference · 5 measurements

This historical geometry describes the model, but the original source does not identify its frame size. Use it as a period reference, not a size-specific fit comparison.

MeasurementLegacy reference
Top tube590 mm
Head-tube angle67.5°
Seat-tube angle68°
Chainstay / rear center430 mm
Wheelbase1096 mm

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

Published drivetrain ratios

Gearing

Chainring ÷ rear sprocket

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

Published build32/22T · 11–34T · 9-speed
Lowest0.65:1 Highest2.91:1 Total range450%

The bar uses the same mechanical-ratio calculation as Compare. Wheel-dependent speed appears only when the record includes an exact ISO/ETRTO rear tire size; no tire size is assumed.

Parts & serviceability

Find replacement parts

3 top part searches
ChainExact archived part
SRAM PC-59, 1/2 X 3/32" Exact archived model
Front tireMatching fit standard
26x2.35" Kenda Kinetics Named tire and published size
Rear derailleurMatching configuration
Shimano Deore Interpreted as Shimano Deore · 9-speed · mechanical Named component · published drivetrain speed — verify exact version
More qualified parts (2)
SeatpostQualified part search
Kalloy SP-341, 30.0mm diameter Named archived component — verify dimensions
HeadsetQualified part search
1 1/8" threadless FSA TH-858 Semi Cartridge 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. Commercial relationships do not influence Archive specifications or analysis.

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Bike-specific inspection checklist 22 checks based on 6 archived component groups Open checklistClose checklist
0 of 22 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 VPS-Atomik · Mountain bike, front & rear suspension · Published sizes: S, M, L

Archived: Frame: Monocoque · Fork: Marzocchi DJ 3, 130mm travel · Aluminum/magnesium, single crown

Archived: Fork: Marzocchi DJ 3, 130mm travel · Rear shock: Fox Vanilla R, 4.5" - 5.5" adjustable travel

Archived: Group: Downhill Mix · Shifters: Shimano Deore rear/SRAM Attack Shorty front · Front derailleur: Shimano Alivio, top-pull/clamp-on 31.8mm · Rear derailleur: Shimano Deore · Crankset: TruVativ Hussefelt w/ bashguard, 22/32 teeth · Bottom bracket: TruVativ ISIS spline · Rear cogs: 9-speed, 11 - 34 teeth · Chain: SRAM PC-59, 1/2 x 3/32"

Archived: Brakes: Hayes HFX-9 Hydraulic Disc brakes, Hayes Hydraulic levers

Archived: Wheel size: 26" wheels · Rims: Sun Rims Single Track · Hubs: Front: Shimano HB-M525, Rear: Shimano FH-M525 · Front tire: 26 x 2.35" Kenda Kinetics

Controls and contact points

Archived: Headset: 1 1/8" threadless FSA TH-858 Semi Cartridge · Handlebar: Axiom riser · Stem: Aluminum Ahead type · Seatpost: Kalloy SP-341, 30.0mm diameter · Saddle: Setlaz, 8mm rails · Pedals: Wellgo LU-A18 platform w/ replaceable pins

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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