The Marin Bikes Alcatraz Jr 2026 is the perfect introduction to dirt jumping, pump tracks and bike park sessions for younger riders looking to progress their skills. Inspired by professional rider Matt Jones’ signature Alcatraz platform, this 24” kids jump bike delivers the same confidence-inspiring geometry and tough-as-nails construction as the adult version, scaled perfectly for smaller shredders.
Built around Marin’s Series 3 6061 Aluminium frame, the Alcatraz Jr is lightweight, strong and designed to handle everything from first jumps to bigger tricks. The compact frame geometry, short chainstays and low standover height create a playful ride that makes manuals, bunny hops and airtime easier to learn while giving young riders the control they need to keep progressing.
Finished in an eye-catching Red Pink Fade colourway, this kids dirt jump bike comes ready to ride straight out of the box with a carefully selected range of reliable components. A Tektro HD-M280 hydraulic rear disc brake provides powerful, controlled braking for confidence on jumps and landings, while the Marin alloy cockpit, platform pedals and Vee Tire Rail tyres offer the grip and durability needed for serious sessions.
Whether your child is hitting the local pump track, learning their first tricks or following in the footsteps of the world’s best jump riders, the Marin Alcatraz Jr 2026 is built to inspire confidence and progression.
Available now from The Rolling Fix, your independent Liverpool bike shop, with expert advice, local collection and delivery options available.
Key Features
- 24” Kids Dirt Jump Bike – Designed for younger riders wanting to progress
- Series 3 6061 Aluminium Frame – Lightweight, strong and built for jumps
- Matt Jones Inspired Geometry – Short, low and playful handling
- Short Chainstays – Perfect for manuals, tricks and controlled airtime
- Tektro HD-M280 Hydraulic Rear Disc Brake – Powerful braking performance and control
- Marin Alloy Components – Durable cockpit and finishing kit
- Vee Tire Rail 24 x 2.25” Tyres – Excellent grip and stability
- Ready-to-Ride Setup – Built for pump tracks, dirt jumps and bike parks
Specification
Brake, Rear: Tektro HD-M280, Hydraulic Disc, 160mm Rotor
Brake Levers: Tektro HD-M280 (Rear only)
Chain: KMC HL-1
Crankset: Marin Forged Alloy, Alloy 32T DM Chainring, 152mm Crank Length
Frame: Series 3 6061 Aluminum, 24” Wheels, 135x10mm Horizontal Dropouts, 73mm Threaded BB, ISCG 05 Tabs
Grip: Marin MTN, Closed End
Handlebar: Marin Riser, 6061 Double Butted Aluminum, 30mm Rise, 700mm Width, 4º Up, 9º Back
Headset: FSA No 57E, Semi-Sealed Cartridge Bearings, 1 1/8" x 1 1/2”
Hub, Front: Forged Alloy, Bolt On 3/8t" Axle, 100mm Spacing
Hub, Rear: Forged Alloy, 135x10mm, Bolt-On, Quad Sealed Bearings, Disc, 32H
Pedals: Alloy Platform
Rims: Marin Custom Extrusion, 27mm Inner, Pinned Joint
Saddle: Marin DJ Saddle
Seatpost: Marin Alloy, 30.9mm
Stem: Marin 3D Forged Alloy, 35mm
Tires: Vee Tire, Rail 24x2.25”, LSG Compound, Wire Bead