Alcatraz Jr 24 2025

The Alcatraz 1 has been scaled down for smaller riders. Built with the same tubing as the larger models, it features a 360mm reach, 69° headtube angle, and 72° seattube angle, with 369mm chainstays.

A suspension-corrected rigid CrMo fork is designed to handle rough-and-rowdy riding, while a simple and stout single-speed drivetrain and Tektro mechanical disc brakes ensure a fun and safe ride.

Specifications

Frame: Series 3 6061 Aluminum, 24” Wheels, 135x10mm Horizontal Single Speed Dropouts, 73mm Threaded BB, ISCG 05 Tabs
Front Suspension: Marin Series 2 CroMo 24", Suspension Corrected, 100x9mm Dropouts
Rear Suspension: N/A
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, Rail 24x2.25”, LSG Compound, Wire Bead
Derailleur, Rear: N/A
Derailleur, Front: N/A
Shift Lever: N/A
Crankset: Marin Forged Alloy, Alloy 32T DM Chainring, 155mm Length
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 Aluminum, 31.8mm at center bulge, 38mm Rise, 700mm Width, 4º Up, 9º Back
Stem: Marin 3D Forged Alloy, 31.8mm clamp, 35mm 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

Specifications, pricing, and availability are subject to change without notice.