MARIN ALCATRAZ 24 2025

We've taken the Alcatraz 1 and scaled it down for smaller riders. Built upon the same tubing as the larger models, it features a 360mm reach, 69° headtube angle, and 72° seat tube angle, with 369mm chainstays. A suspension-corrected rigid CrMo fork is designed to handle rough-and-rowdy riding, and 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
-

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
-

Derailleur, Front
-

Shift Lever
-

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.