Velopedia Bicycle Archive

2003 Marin Mill Valley

Original specifications: Shimano Tiagra · 8-speed · mechanical rear derailleur · 700c wheels · legacy reference geometry.

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At a glance

Archive #39364

Model year: 2003
Category: City & Commuter
Original MSRP: $799.99
Sizes: 13.5", 15.5", 17.5", 19", 20.5"
Colors: Grey
Geometry: Legacy reference
In this record: 24 specifications · original MSRP · geometry

Model history 8 other years

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Identification clues

2003 archived details

Published colors: Grey
Frame: 7000 aluminum, double-butted
Original equipment: Hybrid Mix

Clues, not proof of model year. Colors vary and components may have been replaced.

Original build7000 aluminum, double-butted · Hybrid Mix · 700c wheels

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

13.5"15.5"17.5"19"20.5"

Published colors

Grey

Frameset

Frame Construction	TIG-welded
Frame Material	7000 aluminum, double-butted
Fork Material	Aluminum, unicrown crown

Drivetrain

Component Group	Hybrid Mix
Shifters	Shimano SL-R440
Front Derailleur	Shimano Tiagra Triple, clamp-on
Rear Derailleur	Shimano Tiagra GS
Crankset	Shimano Tiagra Triple, 30/42/52 teeth
Bottom Bracket	Sealed cartridge
Rear Cogs	8-speed, 12 - 24 teeth
Chain	Shimano CN-IG31, 1/2 x 3/32"
Pedals	Not included

Brakes

Brakes	Avid Single Digit 5 brakes, Shimano levers

Cockpit & Contact Points

Headset	1 1/8" threadless WTB Momentum Comp AL
Handlebar	Aluminum flat bar
Handlebar Extensions	Ovation
Stem	Aluminum 4 bolt
Saddle	WTB Speed V Sport
Seatpost	Marin Comp aluminum, 27.0mm diameter

Wheels & Tires

Hubs	Formula Xero Lite
Rims	Formula Xero Lite XR3, 16-hole/20-hole
Spokes	DT stainless steel, 15ga. (1.8mm) straight gauge
Front Tire	700 x 28c Hutchinson Excel
Wheel Size	700c wheels

Geometry

Legacy reference · 5 measurements

Historical measurements. Frame size unknown.

All geometry measurementsLegacy reference · 5 measurements

Measurement	Legacy reference
Top tube	533.4 mm
Head-tube angle	71°
Seat-tube angle	73°
Chainstay / rear center	439.4 mm
Wheelbase	1041.4 mm

Frame size not recorded.

Gearing

Lower gears help on climbs. Higher gears suit higher speeds.

Pedal cadence

RPM

Speed units

RPM = pedal turns per minute.

All published sizes52/42/30T · 12–24T · 8-speed

Lowest1.25:1 Highest4.33:1 Total range347%

Estimated speed At 90 RPM Lowest gear8.9 mph Highest gear31.0 mph

Uses front tire 700C×28; rear size isn’t listed.

How it works

Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.

Speeds are estimates from tire size and pedal cadence. Actual speeds vary.

Try other gearing

Try your current gearingChanged tires or gears? Calculate your setup.

Your changes apply to this calculation. The archived build stays unchanged.

Gears Drivetrain

Front teeth Smallest rear teeth Largest rear teeth

Use up to three front tooth counts, separated by /. For one rear sprocket, enter the same count twice.

Rear tire

Rear tire marking

Apply the marking on your rear tire or edit its dimensions below. Older or fractional inch sizes need the ISO marking (e.g. 37-590).

Rim diameter (BSD, mm) Tire width (mm)

For 32-622, width is 32 mm and rim diameter is 622 mm. Use the rear tire on mixed-wheel bikes. Leave both fields empty to compare ratios only.

Cadence (RPM) Speed units

Gear, dimension and cadence changes update results automatically.

Gearing comparison
Measure	Original	Your setup
Lowest ratio	—	—
Highest ratio	—	—
Total range	—	—
Lowest-gear speed	—	—
Highest-gear speed	—	—

Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.

Parts & serviceability

Find replacement parts

Original specifications

Chain · Original

Shimano CN-IG31

1/2 x 3/32"

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Retailer offers

SRAM PC-830 Chain One Color, 8 Speed

Replacement option

Competitive Cyclist ↗$11.00

Front tire · Original

700 x 28c Hutchinson Excel

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Retailer offers

Vittoria Zaffiro Pro V Clincher Tire Black, 700x28

700x28c

Replacement option

Competitive Cyclist ↗$31.21

Other replacement options (1)

Specialized SW Mondo 2Bliss Tire Black, 700x28

700x28c

Replacement option

Backcountry ↗$67.45

Saddle · Original

WTB Speed V Sport

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More parts (7)Fewer parts

Crankset · Original

Shimano Tiagra Triple

30/42/52 teeth

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Front derailleur · Original

Shimano Tiagra Triple

clamp-on

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Rear derailleur · Original

Shimano Tiagra GS

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Shifters · Original

Shimano SL-R440

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Seatpost · Original

Marin Comp aluminum

27.0mm diameter

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Headset · Original

1 1/8" threadless WTB Momentum Comp AL

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Hubs · Original

Formula Xero Lite

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Parts and service referenceQuick reference before buying parts

Archived specifications for reference. Check the fitted parts before ordering.

Front tire: 700 x 28c Hutchinson Excel
Drivetrain: 8-speed
Seatpost diameter: 27 mm
Bottom bracket / shell: Sealed cartridge

Equipment inspection checks 9 checks based on 5 archived component groups Open equipment checksClose equipment checks

Checks selected from the archived equipment. Confirm what is fitted today. This is not a complete safety inspection; use the full inspection guide before test riding.

Full used-bike inspection guide →

Frame and fork

Inspect the frame and fork →

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

Look for dents or shape changes and inspect the edges of welds around the head tube, bottom bracket, seat cluster and suspension mounts for hairline cracks.

Drivetrain

Check drivetrain wear →

Archived: Group: Hybrid Mix · Shifters: Shimano SL-R440 · Front derailleur: Shimano Tiagra Triple, clamp-on · Rear derailleur: Shimano Tiagra GS · Crankset: Shimano Tiagra Triple, 30/42/52 teeth · Bottom bracket: Sealed cartridge · Rear cogs: 8-speed, 12 - 24 teeth · Chain: Shimano CN-IG31, 1/2 x 3/32"

Shift through every available gear under light load. Hesitation, skipping or inconsistent indexing can reflect wear, damage, poor adjustment or mismatched replacement parts.
Measure chain wear with a compatible gauge and inspect chainring, cassette or freewheel teeth. A new chain does not rule out wear in the remaining drivetrain.
Turn the cranks slowly, feel for rough bearings and check for side-to-side play. Inspect crank arms, chainring bolts and pedal threads for looseness or damage.

Brakes

Inspect the brakes →

Archived: Brakes: Avid Single Digit 5 brakes, Shimano levers

Inspect pads and braking surfaces, check the complete cable or hose path, and confirm both controls feel consistent and return cleanly.

Wheels and tires

Check wheels and tires →

Archived: Wheel size: 700c wheels · Rims: Formula Xero Lite XR3, 16-hole/20-hole · Hubs: Formula Xero Lite · Front tire: 700 x 28c Hutchinson Excel

Spin both wheels and watch for side-to-side and vertical movement. Check spoke tension, rim condition and hub play.
Inspect both tire casings for cuts, cracking, plugs, bulges or exposed threads and confirm the installed sizes are safe for the rims and available frame and fork clearance.

Controls and contact points

Archived: Headset: 1 1/8" threadless WTB Momentum Comp AL · Handlebar: Aluminum flat bar · Stem: Aluminum 4 bolt · Seatpost: Marin Comp aluminum, 27.0mm diameter · Saddle: WTB Speed V Sport · Pedals: Not included

Apply the front brake and rock the bike to check for headset play or notchiness. Inspect the stem, handlebar and clamp zones, then confirm every fastener and control is secure.
Check that the seatpost moves for adjustment and that the saddle, post and clamp hold securely without cracks, severe corrosion or damaged hardware.

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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

2003 Marin Mill Valley