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
Frameset
| Frame Construction | Monocoque |
|---|---|
| Frame Material | 6061 T6 aluminum |
| Fork | Marzocchi DJ 3, 130mm travel |
| Fork Material | Aluminum/magnesium, single crown |
| Rear Shock | Fox Vanilla R, 4.5" - 5.5" adjustable travel |
Drivetrain
| Component 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" |
| Pedals | Wellgo LU-A18 platform w/ replaceable pins |
Brakes
| Brakes | Hayes HFX-9 Hydraulic Disc brakes, Hayes Hydraulic levers |
|---|
Cockpit & Contact Points
| Headset | 1 1/8" threadless FSA TH-858 Semi Cartridge |
|---|---|
| Handlebar | Axiom riser |
| Handlebar Extensions | Not included |
| Stem | Aluminum Ahead type |
| Saddle | Setlaz, 8mm rails |
| Seatpost | Kalloy SP-341, 30.0mm diameter |
Wheels & Tires
| Hubs | Front: Shimano HB-M525, Rear: Shimano FH-M525 |
|---|---|
| Rims | Sun Rims Single Track |
| Spokes | DT stainless steel, 14ga. (2.0mm) straight gauge |
| Spoke Nipples | Brass nipples |
| Front Tire | 26 x 2.35" Kenda Kinetics |
| Wheel Size | 26" wheels |
Historical reference geometry
Geometry
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.
| Measurement | Legacy reference |
|---|---|
| Top tube | 590 mm |
| Head-tube angle | 67.5° |
| Seat-tube angle | 68° |
| Chainstay / rear center | 430 mm |
| Wheelbase | 1096 mm |
The preserved source contains one model-level geometry set without an identified frame size.
Published drivetrain ratios
Gearing
Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.
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
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More qualified parts (2)
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Bike-specific inspection checklist 22 checks based on 6 archived component groups Open checklistClose checklist
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.
Identity and fit
Follow the full used-bike inspection order →Archived: 2003 Norco VPS-Atomik · Mountain bike, front & rear suspension · Published sizes: S, M, L
Frame and fork
Inspect the frame and fork →Archived: Frame: Monocoque · Fork: Marzocchi DJ 3, 130mm travel · Aluminum/magnesium, single crown
Suspension
Evaluate the suspension →Archived: Fork: Marzocchi DJ 3, 130mm travel · Rear shock: Fox Vanilla R, 4.5" - 5.5" adjustable travel
Drivetrain
Check drivetrain wear →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"
Brakes
Inspect the brakes →Archived: Brakes: Hayes HFX-9 Hydraulic Disc brakes, Hayes Hydraulic levers
Wheels and tires
Check wheels and tires →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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Current market
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

