Alcatraz 2 Bike
Parameters
front: Forged Alloy, 110x20mm, Disc, 32H
rear: Forged Alloy, 135x1mm, Bolt-On, Quad Sealed Bearings, Disc, 32H
Description
Marin Alcatraz 2 is a dedicated dirt jump, street, and pump track bike developed with Marin ambassador and MTB legend Matt Jones. Its design is built around fast acceleration, responsive handling, and the confidence needed for jumps, tricks, and repeated heavy use on pump tracks, skateparks, and slopestyle lines.
The Series 3 6061 aluminum frame is built around 26-inch wheels and uses 135x10 mm horizontal dropouts, a 73 mm threaded bottom bracket, and ISCG 05 tabs. Marin highlights its low weight, stiffness, and durability, while short chainstays are intended to keep the bike responsive and easy to move around. The bike also supports left or right brake routing at the handlebar.
Up front, the bike uses a Manitou Circus Expert fork with 100 mm travel and a coil spring. The drivetrain is a clean single speed setup with a 14T rear cog and 32T chainring, backed by Marin’s chain tension device. At the rear, Marin specs a Tektro HD-M535 4-piston hydraulic disc brake with a 160 mm rotor, while the front brake is not included in the stock specification. The cockpit includes a PNW Range handlebar with 38 mm rise and 800 mm width, plus a new Marin CNC stem.
Marin Alcatraz 2 is aimed at riders who want a real dirt jump bike rather than a general-purpose mountain bike. It suits riders practicing jumps, manuals, rotations, pump track flow, and technical street riding. Marin offers two frame sizes: short for a more BMX-inspired feel, and long for a calmer ride; the manufacturer notes that the long frame fits riders 5’11” and taller.
Key features and benefits
- built for dirt jump, street, pump track, skatepark, and slopestyle
- Series 3 6061 aluminum frame
- 26" wheels
- 135x10 mm horizontal dropouts
- 73 mm threaded BB
- ISCG 05 tabs
- Manitou Circus Expert fork with 100 mm travel
- single speed drivetrain
- 14T rear cog
- Tektro HD-M535 4-piston rear hydraulic brake
- PNW Range handlebar, 38 mm rise / 800 mm width
- available in short and long frame sizes
Who is this product for
Marin Alcatraz 2 is for riders looking for a dedicated bike for dirt jumps, pump tracks, and street riding. It works for riders focused on progression, tricks, precise bike handling, and repeated heavy use on jumps and technical features rather than trail riding or general recreation.
Specification
- Frame: Series 3 6061 Aluminum, 26” Wheels, 135x10mm Horizontal Dropouts, 73mm Threaded BB, ISCG 05 Tabs
- Front suspension: Manitou Circus Expert, 26", 100mm Travel, Coil Spring, Taper Steerer Tube, 20x110mm Thru Axle
- Rims: Marin Custom Extrusion, 27mm Inner, Pinned Joint
- Rear hub: Forged Alloy, 135x1mm, Bolt-On, Quad Sealed Bearings, Disc, 32H
- Front hub: Forged Alloy, 110x20mm, Disc, 32H
- Spokes: 14g Black Stainless Steel
- Tires: Vee Tire, XCV 26x2.25”, LSG Compound, Wire Bead
- Crankset: Marin Forged Alloy, Alloy 32T Chainring, 104mm BCD, 170mm Crank Length
- Bottom bracket: External Sealed Cartridge Bearings
- Chain: KMC HL-1
- Rear cog: 14T Single Speed Cog
- Front brake: none
- Rear brake: Tektro HD-M535, 4 Piston Hydraulic Disc, 160mm Rotor
- Brake lever: Tektro HD-M535 (rear only)
- Handlebar: PNW Range Handlebar, 38mm Rise, 35mm Clamp, 800mm Width
- Stem: New Marin CNC Stem, 35mm Clamp
- Grips: Marin Grizzly Lock-On
- 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: All New Marin Chain Tension Device
- Color: red purple
- Sizes: short, long
Size guide
- Short – more compact, more BMX-inspired ride feel
- Long – calmer ride feel; Marin states this size fits riders 180 cm and taller
FAQ
What is Marin Alcatraz 2 designed for?
It is designed for dirt jump, street, pump track, skatepark, and slopestyle riding.
Does it have gears?
No. It uses a single speed drivetrain with a 14T rear cog.
Does it come with a front brake?
No. The stock specification lists no front brake and a rear-only hydraulic brake.
What fork does it use?
It comes with a Manitou Circus Expert fork with 100 mm travel and a coil spring.
Is it available in two sizes?
Yes. Marin Alcatraz 2 is available in short and long frame sizes.
