Monday | 9.00am - 5.30pm |
Tuesday | 9.00am - 5.30pm |
Wednesday | 9.00am - 5.30pm |
Thursday | 9.00am - 5.30pm |
Friday | 9.00am - 5.30pm |
Saturday | 9.00am - 5.30pm |
Sunday | 10.00am - 4.00pm |
Bank Holidays | 10.00am - 5.00pm |
2025 Marin Alcatraz Dirt Jump Bike in Yellow

Click & Collect - Always fast, easy & free
Select Click & Collect at checkout and pick up your order at a convenient location
Monday | 9am - 5.30pm |
Tuesday | 9am - 5.30pm |
Wednesday | 9am - 5.30pm |
Thursday | 9am - 5.30pm |
Friday | 9am - 5.30pm |
Saturday | 9am - 5.30pm |
Sunday | 10am - 4.00pm |
Bank Holidays | 10am - 4.00pm |
Monday | 8am - 6.00pm |
Tuesday | 8am - 6.00pm |
Wednesday | 8am - 6.00pm |
Thursday | 8am - 6.00pm |
Friday | 8am - 6.00pm |
Saturday | 9am - 5.30pm |
Sunday | 10am - 4.00pm |
Bank Holidays | 10am - 5.00pm |
The Alcatraz allows the rider to follow in Matt Jones’ footsteps to build and personalize the best dirt jump bike possible. At home boosting your local 6 pack, ripping up the pump track, or hitting the local skate park the Alcatraz has what you need to take care of business.
The Alcatraz was designed from the ground up to be the best dirt jump and slopestyle bike you have ever ridden. We worked hand- in-hand with Matt Jones to define the exact needs of a modern dirt jump frame, and are proud to release the complete Alcatraz into the world. The 6061 Series 3 aluminum alloy frame is stiff and overbuilt for abuse, with a tapered headtube and 135x10mm horizontal drop outs. Available solely as a complete bike, so there is less time between you and throwing big whips and flips.
All UK Mainland Bike Deliveries Over £999 - Free Bike orders are sent via TNT/FedEx with estimated delivery within 1 working day after quoted dispatch time (For Scottish Highlands, Northern Ireland, Isle of Man and the Channel Islands deliveries please allow an additional 1-4 working days).Bike orders under £999 will incur a £20 delivery fee.
Free Delivery On Orders Over £50.00 - When you spend more than £50.00 at 99 Bikes deliveries to a UK mainland address will be free (excludes bikes & large items).Certain regions and territories of the UK will incur additional charges, details of which can be found on our delivery page.
Click & Collect Orders -Please be aware Click & Collect orders may take some time to fulfil. We advise not to travel to your chosen store until you have been notified that your order is ready for collection.
At 99 Bikes our priority is to ensure that you are highly satisfied with your purchase. In the unlikely event that you aren't, we offer a 30 day online return policy* in which you can receive a full refund. Any item including bikes (with the exception of food) can be returned to us for any reason provided it is received by us in an unused and resalable condition in or with its original packaging which must be undamaged.
Find Out More About Returns >

battery
|
N/A
|
brakes
|
Tektro MD-M280 Mechanical Disc 160mm RotorTektro MD-M280 Mechanical Disc 160mm Rotor
|
brake levers
|
Tektro CL-330TS Alloy
|
cassette
|
14T Single Speed Cog
|
chain
|
KMC HL-1
|
crankset
|
Marin Forged Alloy, Alloy 32T DM Chainring, 152mm Crank Length
|
display
|
N/A
|
fork
|
Marin Series 2 Cro-Mo 24" Fork, Suspension Corrected, 100x9mm Drop Outs
|
frame
|
All New Series 3 6N/A61 Aluminum Frame, 24” Wheels, 135x1N/Amm Horizontal Dropouts, 73mm Threaded BB, ISCG N/A5 Tabs
|
grips
|
Marin Single Clamp Locking
|
handlebars
|
Marin Riser, 6N/A61 Double Butted Aluminum, 38mm Rise, 75N/Amm Width, 4º Up, 9º Back
|
headset
|
FSA No 57E, Semi-Sealed Cartridge Bearings, 1 1/8" x 1 1/2”
|
hubs
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Front: Forged Alloy, Bolt On 3/8th Axle, 100mm Spacing Rear: Forged Alloy, 135x1N/Amm, Bolt-On, Quad Sealed Bearings, Disc, 32H
|
motor
|
N/A
|
rear derailleur
|
N/A
|
rear shock
|
-
|
rims
|
Marin Custom Extrusion, 27mm Inner, Pinned Joint
|
seatpost
|
Marin Alloy, 30.9mm
|
shifters
|
N/A
|
tyres
|
Vee Tire, Rail 24x2.25”, LSG Compound, Wire Bead
|
Size | Rider height range |
XS 24" | >5'1" |
S | 5'1" - 5'9" |
L | 5'6" - 6'3" |