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Marin Alcatraz 1 dirt jump bike with aluminium frame, single-speed drivetrain and hydraulic rear disc brake for progression and durability
Marin Alcatraz 1 dirt jump bike with aluminium frame, single-speed drivetrain and hydraulic rear disc brake for progression and durability
Marin

Marin Alcatraz 1 Dirt Jump Hardtail Mountain Bike 2026 in Blue Green Fade

£849.00
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Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

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With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

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Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
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In the unlikely event that you are not satisfied with your purchase please feel free to return your items within 90 days of the purchase date for a full exchange or refund. Any item (excluding food, underwear or e-gift vouchers) can be returned to us for any reason within 90 days, provided that the item has not been used or fitted and is returned in its original packaging with valid proof of purchase.

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Terms & Conditions

Items must be returned in their original packaging and unused. Refunds will be issued once the product(s) have been received and inspected.

Click & Collect customers can buy with confidence knowing that they can review the item before deciding whether it is right for you before leaving the store. Should you decide it's not right for you, it can be conveniently exchanged or refunded straight away, or you still have up to 90 days to return it if you are still unsure.

Please note:
1. If the items we have sent you are faulty, damaged or not as we described, we will cover the cost of collection and the delivery of the correct item.

2. If we have delivered the correct bike but upon inspection, you decide the bike is not the one for you, we will charge you £50 for collection (£100 from Northern Ireland). If you do not have the original box in usable condition, we will charge you an additional £15 to provide one.

Refunds will be processed using the same method of payment used for the original purchase. Credit & debit card refunds must be made to the card used for the original purchase.

We are unable to offer a refund without a valid proof of purchase.

Marin Alcatraz 1 Dirt Jump Hardtail Mountain Bike 2026 in Blue Green Fade

Season:2026

Brand:Marin

Code:7418770BLUGRN

The Marin Alcatraz 1 is a tough, no-nonsense dirt jump bike built for riders who want to push their skills without breaking the bank. Inspired by Marin’s pro-level Alcatraz range and developed with input from Matt Jones, it delivers a responsive, playful ride that’s perfect for pump tracks, dirt jumps and street sessions.

Its Series 3 aluminium frame is built to handle hard riding while staying light and agile, with short chainstays and a compact geometry that make manuals, jumps and tricks feel natural and controlled. A durable Cro-Mo fork keeps things simple and strong, while quality components ensure it’s ready to ride straight out of the box.

A hydraulic rear disc brake provides dependable stopping power and control, while the single-speed drivetrain keeps maintenance low and reliability high. With wide tyres and a solid wheelset, the Alcatraz 1 is ready for everything from skateparks to trails.

Built for progression and packed with value, the Alcatraz 1 is the ideal entry point into dirt jumping and freestyle riding.


Key Features & Benefits:

  • Progression-Ready Geometry:Compact frame and short chainstays make tricks, jumps and manuals easier to control.
  • Durable DJ Build:Strong aluminium frame and Cro-Mo fork handle hard riding with confidence.
  • Simple & Reliable Setup:Single-speed drivetrain reduces maintenance and keeps things dialled.

Full Specification:

  • Frame: Series 3 6061 aluminium, 26" wheels, 135x10mm horizontal dropouts, threaded BB, ISCG 05 tabs
  • Fork: Marin Series 2 Cro-Mo, suspension corrected
  • Number of Gears: 1
  • Gear Shifters: N/A
  • Rear Derailleur: N/A
  • Chainset: Marin forged alloy
  • Crank Length: 170mm
  • Chainrings: 32T
  • Rear Cassette: 14T single-speed cog
  • Chain: KMC HL-1
  • Bottom Bracket: External sealed cartridge bearings
  • Pedals: Alloy platform
  • Brakes: Tektro HD-M280 hydraulic disc (rear)
  • Brake Rotors: 160mm rear
  • Rims: Marin custom extrusion, 27mm internal
  • Front Hub: Forged alloy, bolt-on, 100mm spacing
  • Rear Hub: Forged alloy, bolt-on, 135x10mm, quad sealed bearings
  • Spokes: 14g black stainless steel
  • Front Tyre: Vee Tire XCV 26x2.25"
  • Rear Tyre: Vee Tire XCV 26x2.25"
  • Handlebars: Marin riser, 6061 aluminium, 30mm rise, 700mm width
  • Handlebar Width: 700mm
  • Handlebar Grips: Marin MTN grips
  • Headset: FSA No.57E, semi-sealed cartridge bearings
  • Stem: Marin forged alloy, 35mm
  • Stem Length: 35mm
  • Saddle: Marin DJ saddle
  • Seatpost: Marin alloy, 30.9mm
  • Extras: Marin chain tension device
  • Weight: Not specified by manufacturer

Manufacturers reserve the right to change specifications without notice based on availability at the point of assembly.

Sizing Chart for Marin Alcatraz

SizeRider height range
XS 24">5'1"
S5'1" - 5'9"
L5'6" - 6'3"

Geometry Information for Marin Alcatraz

24"ShortLong
525575580
360385430
69°69°69°
112115120
69°69°69°
320320320
600646
317317
82222
369395395
10371083
370400
424242
SEATPOST DIAMETER30.930.930.9
HANDLEBAR WIDTH700750750
STEM LENGTH354040
CRANK LENGTH152170170
All lengths in millimeters

Warranty Information for Marin:

Marin Mountain Bikes, Inc. ("Marin") warrants to the original retail purchaser ("you") that the Marin product for which you received this warranty is free from defects in material and workmanship for the periods below

FRAMES WARRANTY PERIOD (From date of purchase)
Carbon Fiber Frames and Forks: 5 Years
Rigid Frames and Forks: Lifetime
Full Suspension Frames: 5 Years
COMPLETE BICYCLE
The complete bicycle is warranted for one year (from date of purchase), including all original parts on the bicycle except tires, tubes, chains and other wear & tear items. Paint and decals are covered under this warranty.
This warranty does NOT cover suspension forks, and rear shocks on full suspension bikes. These items are covered by the suspension component manufacturer’s warranty. Please contact the suspension component manufacturer for any warranty needs.
For full warranty policy please visit marinbikes.com

Sizing Information
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