
Velopedia Bicycle Archive
2003 Marin Muirwoods
Original manufacturer specifications including Mountain Mix drivetrain, 26" wheels, geometry for 1 published size.
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What Velopedia knows
- Model year
- 2003
- Category
- City & Commuter
- Original MSRP
- $399.99
- Sizes
- 13", 15", 17", 18.5", 20"
- Colors
- Matte Charcoal
- Geometry
- Legacy reference · Geometry context
- Record coverage
- 29 preserved details · archived image · original MSRP · preserved geometry
- Archive ID
- 39258
Model history 12 other years
Frameset
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | Chromoly, double-butted |
| Fork Material | Chromoly, unicrown crown |
| Rear Shock | N/A |
Drivetrain
| Component Group | Mountain Mix |
|---|---|
| Shifters | Shimano Alivio RapidFire Plus |
| Front Derailleur | Shimano Alivio |
| Rear Derailleur | Shimano Deore SGS |
| Crankset | TruVativ X-Forge, 22/32/42 teeth |
| Bottom Bracket | Shimano BB-UN25 |
| Rear Cogs | 8-speed, 11 - 28 teeth |
| Chain | Shimano IG-31, 1/2 x 3/32" |
| Pedals | Resin body, aluminum cage |
Brakes
| Brakes | Aluminum linear-pull brakes, aluminum linear-pull levers |
|---|
Cockpit & Contact Points
| Headset | 1 1/8" threadless WTB Momentum Comp ST |
|---|---|
| Handlebar | Aluminum, rise |
| Handlebar Extensions | Not included |
| Stem | Aluminum, forged |
| Saddle | WTB Speed V |
| Seatpost | Aluminum micro-adjust |
Wheels & Tires
| Hubs | Aluminum, Q/R |
|---|---|
| Rims | Alex TA-19, 32-hole |
| Spokes | DT stainless steel, 15ga. (1.8mm) straight gauge |
| Front Tire | 26 x 1.50" WTB Slickosaurus |
| Wheel Size | 26" wheels |
Historical reference geometry
Geometry
Historical model-level geometry recovered from Velopedia’s original archive database. The source does not identify which listed frame size this reference describes, so fit interpretation is intentionally limited and no size-normalized Archive Context is generated.
| Measurement | Legacy reference |
|---|---|
| Top tube | 552.4 mm |
| Head-tube angle | 70° |
| Seat-tube angle | 73° |
| Chainstay / rear center | 425.4 mm |
| Wheelbase | 1057.4 mm |
Geometry source: Historical archive database — model-level reference geometry. The historical source provides one model-level geometry set and does not identify the corresponding frame size.
Geometry tools
Explore this historical geometry
Model-level historical reference
Period context: At 70°, the head angle sits toward the slacker end among city & commuter geometries represented in Velopedia for this period. Its 73° seat angle is close to the middle of the group among the same-period city & commuter references.
Compared with 124 distinct legacy city & commuter geometries from model years 2001–2004. Only angular measurements are used because the historical reference frame size is unidentified.Parts & serviceability
Find replacement parts
More qualified parts (5)
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.
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 →
- BrakesInspect pad condition, cable movement and the rim sidewalls or brake tracks for wear. A concave or heavily worn braking surface can mean the wheel also needs replacement.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
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 Marin Muirwoods · Comfort/commuter · Published sizes: 13", 15", 17", 18.5", 20"
Frame and fork
Inspect the frame and fork →Archived: Frame: TIG-welded · Fork: · Chromoly, unicrown crown
Drivetrain
Check drivetrain wear →Archived: Group: Mountain Mix · Shifters: Shimano Alivio RapidFire Plus · Front derailleur: Shimano Alivio · Rear derailleur: Shimano Deore SGS · Crankset: TruVativ X-Forge, 22/32/42 teeth · Bottom bracket: Shimano BB-UN25 · Rear cogs: 8-speed, 11 - 28 teeth · Chain: Shimano IG-31, 1/2 x 3/32"
Brakes
Inspect the brakes →Archived: Brakes: Aluminum linear-pull brakes, aluminum linear-pull levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 26" wheels · Rims: Alex TA-19, 32-hole · Hubs: Aluminum, Q/R · Front tire: 26 x 1.50" WTB Slickosaurus
Controls and contact points
Archived: Headset: 1 1/8" threadless WTB Momentum Comp ST · Handlebar: Aluminum, rise · Stem: Aluminum, forged · Seatpost: Aluminum micro-adjust · Saddle: WTB Speed V · Pedals: Resin body, aluminum cage
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.



