Velopedia Bicycle Archive

2012 Marin Alpine Trail 29er

Original specifications.

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At a glance

Archive #3028344
Model year
2012
Category
Mountain
Original MSRP
$849.99
Sizes
17, 19, 20.5, 22
Colors
Gray Gloss
In this record
18 specifications · archived image · original MSRP
Model history 2 other years

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Identification clues

2012 archived details

Published colors
Gray Gloss
Frame
double butted 6061 alloy

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

Campaign
Original builddouble butted 6061 alloy

Manufacturer catalog

Published sizes and colors

4 sizes · 1 color

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

Published sizes

171920.522

Published colors

Gray Gloss

Frameset

Frame Materialdouble butted 6061 alloy
ForkRock Shox XC28 TurnKey 100mm

Drivetrain

ShiftersShimano Alivio
Front DerailleurShimano Alivio
Rear DerailleurShimano Deore
CranksetTruVativ Blaze 3.0 44/32/22T
Bottom BracketTruvativ cartridge bearing
CassetteShimano HG30 8spd 11-34t
ChainShimano HG-53
PedalsComposite

Brakes

BrakesTektro Draco 160mm

Cockpit & Contact Points

HeadsetFsa
HandlebarAlloy 31.8
StemMarin OS 31.8
SaddleWTB Silverado
SeatpostAlloy 27.2

Wheels & Tires

RimsAlex TD20
Front TireGeax Saguaro 29 x 2.2

Gearing

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

All published sizes44/32/22T · 11–34T · 8-speed
Lowest0.65:1 Highest4.00:1 Total range618%

Speed unavailable: wheel or tire size is missing or unclear.

Add your rear tire size to calculate speed
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.

Your gearing setup
Gears

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

Rear tire

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).

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.

Gear, dimension and cadence changes update results automatically.

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

Parts & serviceability

Find replacement parts

Original specifications
Cassette · Original
Shimano HG30 8spd 11-34t
Front tire · Original
Geax Saguaro 29 x 2.2 Replacement search: 29x2.2 bicycle tire Before ordering: Check rim type and tire clearance.
Saddle · Original
WTB Silverado
More parts (1)Fewer parts
Rims · Original
Alex TD20

Based on the original build. Check fit and installed parts before ordering. Affiliate links may earn Velopedia a commission. As an Amazon Associate I earn from qualifying purchases.

Parts and service referenceQuick reference before buying parts

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

Front tire
Geax Saguaro 29 x 2.2
Drivetrain
8-speed
Bottom bracket / shell
Truvativ cartridge bearing
Campaign
Equipment inspection checks 10 checks based on 5 archived component groups Open equipment checksClose equipment checks
0 of 10 checked Progress stays in this browser for this record.

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 →

Archived: Frame: double butted 6061 alloy · Fork: Rock Shox XC28 TurnKey 100mm

Archived: Shifters: Shimano Alivio · Front derailleur: Shimano Alivio · Rear derailleur: Shimano Deore · Crankset: TruVativ Blaze 3.0 44/32/22T · Bottom bracket: Truvativ cartridge bearing · Cassette: Shimano HG30 8spd 11-34t · Chain: Shimano HG-53

Archived: Brakes: Tektro Draco 160mm

Archived: Rims: Alex TD20 · Front tire: Geax Saguaro 29 x 2.2

Controls and contact points

Archived: Headset: FSA · Handlebar: Alloy 31.8 · Stem: Marin OS 31.8 · Seatpost: Alloy 27.2 · Saddle: WTB Silverado · Pedals: Composite

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Campaign

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

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