Marin Alcatraz

2023 MountainDirt jump Manufacturer page

Marin Alcatraz, color Gloss Blue / Magenta

Last known price: $1,449

Prices shown first for United States
Fork travel: 100 mm
Wheels: 26″
Drivetrain: 1 × 1 32t / 14t
Gear range: 100%
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

Short
Long

The manufacturer did not publish rider heights for these sizes.

Components

12 of 19 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Series 3 6061 Aluminum, 26” Wheels, 135x10mm Horizontal Single Speed Dropouts, 73mm Threaded BB, ISCG 05 Tabs Not identified

Suspension

2 parts

Fork

Manutou Circus Expert, 26", 100mm Travel, Coil Spring, Taper Steerer Tube, 20x110mm Thru Axle Not identified
Rear shock

None

Drivetrain

7 parts

Bottom bracket

External Sealed Cartridge Bearings Not identified
Cassette

14T Single Speed Cog Not identified
Chain
- KMC
HL-1
Crankset
- Marin 32t
Front derailleur

None
Rear derailleur

None
Shifters

None

Brakes

2 parts

Wheels and tires

4 parts

Front hub

Forged Alloy, 110x20mm, Disc, 32H Not identified
Rear hub

Forged Alloy, 135x10mm, Bolt-On, Quad Sealed Bearings, Disc, 32H Not identified
Rims
- Marin
Tires
- Vee Tire

Cockpit and contact points

7 parts

Grips
- Marin
Handlebar
- Marin
Headset
- FSA NO.57E
Pedals

Alloy Platform Not identified
Saddle
- Marin
Seatpost
- Marin
Stem
- Marin

Sizes and geometry

2 sizes Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size Short

Table

Reach 385mm

Stack 575mm

Wheelbase 1037mm

Head angle 69.0°

Seat angle 69.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 26″ wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 2 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	385	430
Stackmm	575	580
Top tube lengthmm	600	646
Seat tube lengthmm	320	320
Head tube lengthmm	115	120
Head tube angle	69°	69°
Seat tube angle	69°	69°
Chainstay lengthmm	395	395
Wheelbasemm	1037	1083
Front centermm	643	689
Bottom bracket dropmm	22	22
Bottom bracket heightmm	317	317
Standover heightmm	370	400
Fork rakemm	42	42
Trailmm	87	88
Stack/reach ratio	1.49	1.35
Suspension and parts
Crank lengthmm	170	170
Handlebar widthmm	750	750
Stem lengthmm	40	40

Not published by the manufacturer: Front travel, Rear travel, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum

Suspension

Suspension configuration: Hardtail
Front travel: 100 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 1
Smallest sprocket: 14
Largest sprocket: 14
Lowest gear: 59.4 in
Highest gear: 59.4 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: No shifting

Additional specifications

Bottom bracket standard: BSA
Fork spring: Coil
Tire width: 2.25″
Wheel material: Aluminum
Wheel size: 26″

Technical analysis

1 measure

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Front travel

100 mm

This value is within the central range for this class.

Cohort: Mountain / Dirt jump Model year: 2023
Sample: 83 bicycles with this information
Coverage: 89.2% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 22.8 km/h
Highest gear: 22.8 km/h

Total gear range 100%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.