Marin 2025 Alcatraz 1
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Your bike will arrive fully assembled and ready to ride. No tools or extra setup required!
Marin 2025 Alcatraz 1
The Alcatraz 1 allows the rider to follow in Matt Jones’ footsteps to build and personalize the best dirt jump bike possible. At home boosting your local 6-pack, ripping up the pump track, or hitting the local skate park the Alcatraz has what you need to take care of business.
The Series 3 aluminum frame is built for the hard knocks and is stiff enough for lightning-fast acceleration and tough enough for the heavy hits. Short stays keep manuals easy and ambidextrous cable routing means you can run your brake on the left or right of the bars. There’s a suspension-corrected CrMo fork, front and rear Tektro disc brakes, Vee Tire rubber and plenty of bombproof Marin components. Best of all, it’s available in two frame sizes, regular and long.
Specifications
Marin 2025 Alcatraz 1
Frame
Colour: Blue Fade
Frame: Series 3 6061 Aluminum, 26” Wheels, 135x10mm Horizontal Single Speed Dropouts, 73mm Threaded BB, ISCG 05 Tabs
Fork: Marin Series 2 CroMo 26", Suspension Corrected, 100x9mm Dropouts
Shock:
Drivetrain
Crankset: Marin Forged Alloy, Alloy 32T Chainring, 104mm BCD
Chain: KMC HL-1
Bottom Bracket: External Sealed Cartridge Bearings
Rear Derailleur:
Front Derailleur:
Derailleur Shifter:
Freewheel/Cassette: 14T Single Speed Cog
Braking System
Brakes: [F] [R] Tektro MD-M280 Mechanical Disc 160mm Rotor
Brake Levers: Tektro CL-330TS Alloy
Wheels
Tyres: [F] and [R] Vee Tire Co. XCV 26x2.25”, LSG Compound, Wire Bead
Wheels/Rims: Marin Custom Extrusion, 27mm Inner, Pinned Joint
Hubs: [F] Forged Alloy, Bolt On 3/8" Axle, 100mm Spacing [R] Forged Alloy, 135x10mm, Bolt-On, Quad Sealed Bearings, Disc, 32H
Other
Handlebar: Marin Riser, 6061 Double Butted Aluminum, 31.8mm at center bulge, 38mm Rise, 750mm Width, 4º Up, 9º Back
Stem: Marin 3D Forged Alloy, 31.8mm clamp, 40mm extension
Saddle: Marin DJ Saddle
Seat Post: Marin Alloy, 30.9mm
Geomerty
Marin 2025 Alcatraz 1
| Short | Long | |
| STACK | 575 | 580 |
| REACH | 385 | 430 |
| HEADTUBE ANGLE | 69° | 69° |
| HEADTUBE LENGTH | 115 | 120 |
| TOPTUBE EFFECTIVE | 69° | 69° |
| SEATTUBE ANGLE | 320 | 320 |
| SEATTUBE LENGTH | 600 | 646 |
| BB HEIGHT | 317 | 317 |
| BB DROP (REAR/FRONT) | 22 | 22 |
| CHAINSTAY | 395 | 395 |
| WHEELBASE | 1037 | 1083 |
| STANDOVER HEIGHT | 370 | 400 |
| FORK OFFSET | 42 | 42 |
Velo City does not carry all goods available for purchase online. Time for collection may vary depending if the products are required to be sourced from off-site warehouses. The process can take a few days (normally anywhere between 2-10 working days). If you are worried about a delay please feel free to email or call us.
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Due to international policy, all bikes purchased online must be shipped to an approved bike store for professional assembly by a qualified bike mechanic—they cannot be delivered directly to your address.
If you're interested in a bike, contact us and we'll help arrange delivery to a participating store near you.
Please note that delivery to another store will incur freight and assembly charges. Any applicable costs will be confirmed with you by our online team before your order is shipped.
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