Alcatraz 1 2025

Marin's Alcatraz dirt jump bike is your ally for high flying antics.

Designed in conjunction with UK MTB icon Matt Jones and renown as one of the best value jump bikes available, the Alcatraz frame is now available spec'd in 2 different build kits. 

The entry level Alcatraz 1 packs a punch at an outstanding value price point. The Series 3 aluminium frame is built for the hard knocks and is stiff enough for lightning-fast acceleration and tough enough for the heavy hits. Short stays keep manuals easy and ambidextrous cable routing means you can run your brake on the left or right of the bars. There’s a suspension-corrected CrMo fork, front and rear Tektro disc brakes, Vee Tire rubber and plenty of bombproof Marin components. Best of all, it’s available in two frame sizes, regular and long.

Sizing:

• Short: 5'1 - 5'9
• Long: 5'6 - 6'3

Specification:

Frame - Series 3 6061 Aluminium, 26” Wheels, 135x10mm Horizontal Single Speed Dropouts, 73mm Threaded BB, ISCG 05 Tabs
Fork - Marin Series 2 CroMo 26", Suspension Corrected, 100x9mm Dropouts
Rims - Marin Custom Extrusion, 27mm Inner, Pinned Joint
Hub, Rear - Forged Alloy, 135x10mm, Bolt-On, Quad Sealed Bearings, Disc, 32H
Hub, Front - Forged Alloy, Bolt On 3/8" Axle, 100mm Spacing
Spokes - 14g Black Stainless Steel
Tires - Vee Tire Co. XCV 26x2.25”, LSG Compound, Wire Bead
Crankset - Marin Forged Alloy, Alloy 32T Chainring, 104mm BCD
Bottom Bracket - External Sealed Cartridge Bearings
Chain - KMC HL-1
Cassette - 14T Single Speed Cog
Brake, Front - Tektro MD-M280 Mechanical Disc 160mm Rotor
Brake, Rear - Tektro MD-M280 Mechanical Disc 160mm Rotor
Brake Levers - Tektro CL-330TS Alloy
Handlebar - Marin Riser, 6061 Double Butted Aluminium, 31.8mm at center bulge, 38mm Rise, 750mm Width, 4º Up, 9º Back
Stem - Marin 3D Forged Alloy, 31.8mm clamp, 40mm extension
Grips - Marin MTN, Closed End
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 - Marin Chain Tension Device