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The Alcatraz was designed from the ground up to be the best dirt jump and slopestyle bike you have ever ridden. We worked hand-in-hand with Matt Jones to define the exact needs of a modern dirt jump frame, and are proud to release the complete Alcatraz into the world. The 6061 Series 3 aluminum alloy frame is stiff and overbuilt for abuse, with a tapered headtube and 135x10mm horizontal drop outs. Available as a complete bike or a frame kit, so you can get the bike of your dreams for throwing big whips and flips.



The Alcatraz features a 6061 Series 3 alloy frame, with a burly double butted tubesets for the best ride quality and stiffness, tapered headtubes for maximum strength on big jumps, and horizontal drop out with slotted IS disc brake tabs.

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Marin Series 3 aluminum decal on the Alcatraz chainstay


We have optimized the chainstay length of the Alcatraz to make sure you can have the shortest chainstays possible, giving you the ability to pop a wheelie or manual anywhere at anytime.

Rear dropout image of the Marin Alcatraz


The Alcatraz features 135x10mm horizontal single speed only dropouts — the standard in dirt jump technology for axle and dropout strength.

Profile view of the Marin Alcatraz showing handlebars and internal routing


The location of the internal routing port allows for the rear brake to be located on the left or right hand side of the handlebars.