Built for riders who want to create a seriously capable dirt jump, pump track or hardtail mountain bike, the Marin Alcatraz 2 2026 Frameset provides the perfect foundation for a custom build. Finished in a striking Red Purple colourway, the Alcatraz 2 combines a lightweight Series 3 6061 aluminium frame with aggressive, playful geometry designed for big jumps, fast acceleration and technical riding.
Developed with input from professional rider Matt Jones, the Alcatraz 2 has been fine-tuned to deliver the responsive handling and playful feel that makes a dirt jump hardtail so much fun. Its short chainstays make manuals, jumps and quick direction changes feel natural, while the low and compact frame keeps the bike agile without compromising control.
The Series 3 6061 aluminium frame is built to handle hard landings and big sends while remaining light enough for rapid acceleration. With clearance for 26-inch wheels, horizontal 135 x 10mm dropouts and ISCG 05 chain guide tabs, it offers plenty of flexibility for creating your ideal custom Alcatraz build.
Whether you're looking to build a dedicated dirt jump bike, a playful pump track machine or a compact hardtail for throwing around the trails, the Marin Alcatraz 2 Frameset is ready to become the centrepiece of your dream build.
Key Features
- Series 3 6061 Aluminium frame – Lightweight, strong and designed for aggressive riding.
- 26-inch wheel compatibility – Perfect for dirt jumps, pump tracks and playful hardtail builds.
- Matt Jones-tuned geometry – Developed for responsive handling, control and progression.
- Short chainstays – Designed for easy manuals, poppy jumps and rapid acceleration.
- Low and compact frame design – Keeps the bike agile and helps maximise rider movement.
- 135 x 10mm horizontal dropouts – Secure rear wheel positioning for a custom build.
- 73mm threaded bottom bracket – Straightforward and durable for custom component setups.
- ISCG 05 tabs – Ready for compatible chain guide setups.
- FSA No. 57E headset – Semi-sealed cartridge bearings with 1 1/8" x 1 1/2" compatibility.
- Red Purple finish – A bold colourway that stands out on the trails and at the pump track.
Specification
Frame: Series 3 6061 Aluminum, 26” Wheels, 135x10mm Horizontal Dropouts, 73mm Threaded BB, ISCG 05 Tabs
Headset: FSA No 57E, Semi-Sealed Cartridge Bearings, 1 1/8" x 1 1/2”