Marin Alcatraz 2 Dirt Jump Frameset

Overview

• Model: Marin Alcatraz 2 (2026)
• Frame Material: Series 3 6061 Aluminium
• Wheel Size: 26 inches
• Riding Style: Dirt jump, pump track and park riding
  
• Design: Compact geometry with short chainstays and horizontal rear dropouts

Key Features

• Drivetrain: Designed for single-speed setups
• Rear Dropout: 135×10mm horizontal
• Bottom Bracket: 73mm threaded shell
• Chain Guide Mounts: ISCG 05
• Cable Routing: Internal, ambidextrous rear brake routing
• Headset: Tapered 1⅛-inch to 1½-inch FSA No. 57E included
• Seat Clamp: Marin bolt-type clamp included
• Seatpost Diameter: 30.9mm
• Chain Tensioner: Included
• Rear Brake: Disc brake compatible
• Maximum Chainring: 32T (104mm BCD, based on complete-build specification)