The Alcatraz was designed from the ground up to be the best dirt jump hardtail 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 aluminum frame is stiff and overbuilt for abuse, with a tapered headtube and 135x10mm horizontal dropouts with a chain tension device for either single speed or geared builds.
Marin Alcatraz Frameset 2020
Series 3 6061 Aluminum Frame, 26” Wheels, 135x10mm Horizontal Dropouts, 73mm Threaded BB, ISCG 05 Tabs