Velopedia Bicycle Archive

2001 Marin MBX-250

Original specifications: 20" wheels · legacy reference geometry.

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At a glance

Archive #35961
Model year
2001
Category
BMX
Original MSRP
$449.99
Sizes
Expert
Colors
Polish w/Wing Red fork
Geometry
Legacy reference
In this record
22 specifications · archived image · original MSRP · geometry
Campaign
Original build7005 aluminum · 20" wheels

Manufacturer catalog

Published sizes and colors

1 size · 1 color

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

Published sizes

Expert

Published colors

Polish w/Wing Red fork

Frameset

Frame ConstructionTIG-welded
Frame Material7005 aluminum
ForkMarin
Fork Material4130 chromoly, unicrown crown

Drivetrain

Crankset3-piece chromoly 180mm, 44 teeth
Bottom BracketLoose ball
Rear Cogs1-speed, 16 teeth
ChainKMC, 1/2 x 3/32"
PedalsPlatform

Brakes

BrakesDia-Compe MX-2 rear brakes, Unspecified front/Dia-Compe MX-2 rear levers

Cockpit & Contact Points

Headset1 1/8" threadless Dia Compe SX
HandlebarChromoly BMX
Handlebar ExtensionsNot included
StemAluminum, forged
SaddleBMX
SeatpostAluminum micro-adjust

Wheels & Tires

HubsAluminum
RimsAlex AL-DM24, 36-hole
SpokesStainless steel, 1.8mm
Front Tire20 x 2.00" Maxxis Max Daddy
Rear Tire20 x 1.95" Maxxis Max Daddy
Wheel Size20" wheels

Geometry

Legacy reference · 4 measurements

Historical measurements. Frame size unknown.

All geometry measurementsLegacy reference · 4 measurements
MeasurementLegacy reference
Top tube515.6 mm
Head-tube angle74°
Seat-tube angle70.5°
Chainstay / rear center381 mm

Frame size not recorded.

Gearing

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

Published build44T · 16T · 1-speed
Ratio2.75:1

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
Front tire · Original
20 x 2.00" Maxxis Max Daddy
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Rear tire · Original
20 x 1.95" Maxxis Max Daddy
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Rims · Original
Alex AL-DM24

36-hole

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Parts and service referenceQuick reference before buying parts

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

Front tire
Front: 20 x 2.00" Maxxis Max Daddy, Rear: 20 x 1.95" Maxxis Max Daddy
Drivetrain
1-speed
Bottom bracket / shell
Loose ball
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 →

Frame and fork

Inspect the frame and fork →

Archived: Frame: TIG-welded · Fork: Marin · 4130 chromoly, unicrown crown

Drivetrain

Check drivetrain wear →

Archived: Crankset: 3-piece chromoly 180mm, 44 teeth · Bottom bracket: Loose ball · Rear cogs: 1-speed, 16 teeth · Chain: KMC, 1/2 x 3/32"

Brakes

Inspect the brakes →

Archived: Brakes: Dia-Compe MX-2 rear brakes, Unspecified front/Dia-Compe MX-2 rear levers

Wheels and tires

Check wheels and tires →

Archived: Wheel size: 20" wheels · Rims: Alex AL-DM24, 36-hole · Hubs: Aluminum · Front tire: Front: 20 x 2.00" Maxxis Max Daddy, Rear: 20 x 1.95" Maxxis Max Daddy

Controls and contact points

Archived: Headset: 1 1/8" threadless Dia Compe SX · Handlebar: Chromoly BMX · Stem: Aluminum, forged · Seatpost: Aluminum micro-adjust · Saddle: BMX · Pedals: Platform

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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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