Marin Alcatraz 24-Inch 2026 Junior Bike

More Information
Brand	Marin
Colour	Red / Pink
Suitable for	Kids
Wheel Size	24-inch

Marin County California is regarded as the birthplace of mountain biking. With niche communities back then shaping what it is today, and with Marin Bikes' inception coming shortly after, the company has deep roots in the sport and now offers many styles of bikes to suit off-roaders and commuters alike.

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Enter the Matt Jones matrix on the Alcatraz 24" – scaled perfectly for smaller shredders. Decked out with no-nonsense ready-to-ride and ready-to-progress parts – a Tektro hydraulic rear disc brake to boost control. Its Series 3 Aluminum frame is big-line tough and spin-it light. Dialed with short chainstays for poppy manuals and a low, short frame so it won't cramp your style – its geometry lets you level up without limits.

Specifications

Frame and Forks

Frame: Marin Series 2 Cro-Mo 24" Fork, Suspension Corrected, 100 x 9mm Drop Outs
Forks: Series 3 6061 Aluminum, 24” Wheels, 135 x 10mm Horizontal Dropouts, 73mm Threaded BB, ISCG 05 Tabs
Headset: FSA No 57E, Semi-Sealed Cartridge Bearings, 1 1/8" x 1 1/2”

Drivetrain

Crankset: Marin Forged Alloy, Alloy 32 Tooth DM Chainring, 152mm Crank Length
Cassette: 14 Teeth Single Speed Cog
Chain: KMC HL-1

Braking/Shifting

Rear Brake: Tektro HD-M280, Hydraulic Disc, 160mm Rotor
Brake Levers: Tektro HD-M280 (Rear only)

Wheels

Rims: Marin Custom Extrusion, 27mm Inner, Pinned Joint
Front Hub: Forged Alloy, Bolt On 3/8t" Axle, 100mm Spacing
Rear Hub: Forged Alloy, 135 x 10mm, Bolt-On, Quad Sealed Bearings, Disc, 32H
Spokes: 14g Black Stainless Steel
Tyres: Vee Tyre, Rail 24 x 2.25”, LSG Compound, Wire Bead

Finishing Kit

Handlebars: Marin Riser, 6061 Double Butted Aluminum, 30mm Rise, 700mm Width, 4º Up, 9º Back
Grips: Marin MTN, Closed End
Stem: Marin 3D Forged Alloy, 35mm
Seatpost: Marin Alloy, 30.9mm
Saddle: Marin DJ Saddle
Pedals: Alloy Platform