Marin Alcatraz 1 2025 Dirt Jump Bike

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

• 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

• Rear Suspension

  -

• Rims

  Marin Custom Extrusion, 27mm Inner, Pinned Joint

• Hub, Rear

  Forged Alloy, 135x10mm, Bolt-On, Quad Sealed Bearings, Disc, 32H

• Hub, Front

  Forged Alloy, Bolt On 3/8" Axle, 100mm Spacing

• Spokes

  14g Black Stainless Steel

• Tires

  Vee Tire Co. XCV 26x2.25”, LSG Compound, Wire Bead

• Derailleur, Rear

  -

• Derailleur, Front

  -

• Shift Lever

  -

• Crankset

  Marin Forged Alloy, Alloy 32T Chainring, 104mm BCD

• Bottom Bracket

  External Sealed Cartridge Bearings

• Chain

  KMC HL-1

• Cassette

  14T Single Speed Cog

• Brake, Front

  Tektro MD-M280 Mechanical Disc 160mm Rotor

• Brake, Rear

  Tektro MD-M280 Mechanical Disc 160mm Rotor

• Brake Levers

  Tektro CL-330TS Alloy

• 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

• Grips

  Marin MTN, Closed End

• Headset

  FSA No 57E, Semi-Sealed Cartridge Bearings, 1 1/8" x 1 1/2”

• Seatpost

  Marin Alloy, 30.9mm

• Saddle

  Marin DJ Saddle

• Pedals

  Alloy Platform

• Extras

  Marin Chain Tension Device

Free UK delivery on all orders over £25. Next day delivery is also available at an additional cost.