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

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

13"15"17"18.5"20"

Published colors

Matte Charcoal

Frameset

Frame ConstructionTIG-welded
Frame MaterialChromoly, double-butted
Fork MaterialChromoly, unicrown crown
Rear ShockN/A

Drivetrain

Component GroupMountain Mix
ShiftersShimano Alivio RapidFire Plus
Front DerailleurShimano Alivio
Rear DerailleurShimano Deore SGS
CranksetTruVativ X-Forge, 22/32/42 teeth
Bottom BracketShimano BB-UN25
Rear Cogs8-speed, 11 - 28 teeth
ChainShimano IG-31, 1/2 x 3/32"
PedalsResin body, aluminum cage

Brakes

BrakesAluminum linear-pull brakes, aluminum linear-pull levers

Cockpit & Contact Points

Headset1 1/8" threadless WTB Momentum Comp ST
HandlebarAluminum, rise
Handlebar ExtensionsNot included
StemAluminum, forged
SaddleWTB Speed V
SeatpostAluminum micro-adjust

Wheels & Tires

HubsAluminum, Q/R
RimsAlex TA-19, 32-hole
SpokesDT stainless steel, 15ga. (1.8mm) straight gauge
Front Tire26 x 1.50" WTB Slickosaurus
Wheel Size26" wheels

Historical reference geometry

Geometry

Legacy reference · 5 measurements

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.

MeasurementLegacy reference
Top tube552.4 mm
Head-tube angle70°
Seat-tube angle73°
Chainstay / rear center425.4 mm
Wheelbase1057.4 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Model-level historical reference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.
See it in periodOpen an immediate comparison with preserved 2003 city & commuter geometries. The source frame size remains unidentified.
See its 2003 geometry context

Parts & serviceability

Find replacement parts

3 top part searches
Front tireMatching fit standard
26x1.50" WTB Slickosaurus Named tire and published size
Brake padsMatching fit standard
Linear-pull brake pads Published brake type — verify pad mounting style
Bottom bracketExact archived part
Shimano BB-UN25 Exact archived model
More qualified parts (5)
Front derailleurMatching configuration
Shimano Alivio Interpreted as Shimano Alivio · 8-speed · mechanical Named component · published drivetrain speed — verify exact version
Rear derailleurMatching configuration
Shimano Deore SGS Interpreted as Shimano Deore · 8-speed · mechanical Named component · published drivetrain speed — verify exact version
ShiftersQualified part search
Shimano Alivio RapidFire Plus Interpreted as Shimano Alivio · 8-speed · mechanical Named component · published drivetrain speed — verify exact version
HeadsetQualified part search
1 1/8" threadless WTB Momentum Comp ST Named archived component — verify dimensions
RimsQualified part search
Alex TA-19, 32-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. 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
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 Marin Muirwoods · Comfort/commuter · Published sizes: 13", 15", 17", 18.5", 20"

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

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"

Archived: Brakes: Aluminum linear-pull brakes, aluminum linear-pull levers

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.

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