Description
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.
Marin 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...
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Description
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.
Returns Information
Delivery Information
We have a range of delivery options on orders. Most importantly, if your order is over £60 then delivery is free!
All Biketart orders are fully trackable. You will get a tracking number by email when your order is shipped which will allow you to track it with Royal Mail or DPD.
In-stock orders placed by 4pm will be processed the same day.
Any items displaying "in-stock with supplier, despatched in 2-3 days" on the product page cannot be despatched the same day as they will be shipped to us from the supplier when you place your order.
Read on to discover the delivery options available to you on your order.
Delivery Services
Standard Tracked: All orders over £60 are eligible for free standard tracked delivery by Royal Mail. For orders under £60 there is a £3.5 charge. Orders sent using standard tracked are usually delivered in 2-3 days.
Priority Tracked: For £4.5 your order is sent by premium tracked delivery which gives a 1-2 day (including Saturdays) delivery timescale. This service is provided by Royal Mail who will usually deliver on Saturdays. Orders must be placed by 4pm.
Next Day Courier: If you require next-working-day delivery then this is provided by Fedex and is £7. Orders must be placed by 3.30pm and be fully in-stock in order to be processed before our daily Fedex collection.
Saturday Delivery: You can select Saturday delivery options from Fedex at the checkout.
Bike Delivery: Bikes are always delivered by courier. After placing a bike order your bike is fully assembled and tested before being carefully boxed for shipping. Because of this build process it is not always possible to offer next-day delivery on a bike. Please do get in touch if you want to know a specific despatch day on any bike on our website. Call us on 01227 832582 or email support@biketart.com.
Returns Info
We offer a 90 day return period on our items. We ask that items are returned in their original packaging and in re-sellable condition. We do not pay returns postage unless we have made an error with your order.
We cannot accept the return if the item is not correctly packaged and is damaged in transit during the return trip back to us.
Please do not stick any tape or labels to the products branded outer packaging.
If you require an exchange it is recommended that you re-order the correct size/item and return the item you do not wish to keep to us for a refund.