2025 Marin Alcatraz Dirt Frame Kit
Finance available with Novuna Personal Finance
739093001
843346130839
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The 2025 Marin Alcatraz Dirt Frame Kit Short PURPLE FADE is available at the following locations.
The item will be transferred to the location you choose during checkout.
If the item is not currently available to view at your desired location, please call your nearest store to arrange for it to be transferred.
The Alcatraz was designed from the ground up to be the best dirt jump and slopestyle bike you have ever ridden. Marin 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 aluminium alloy frame is stiff and overbuilt for abuse, with a tapered headtube and 135x10mm horizontal drop outs.
The foundation for the Alcatraz build of your dreams. The Series 3 aluminum frame is built for the hard knocks and is stiff enough for lightning-fast acceleration and tough enough for the heavy hits. Short stays keep manuals easy and ambidextrous cable routing means you can run your brake on the left or right of the bars.
The Main Alcatraz frame kit comes supplied with an FSA headset, Marin chain tension device and Marin seat clamp. Available in two frame sizes, regular and long.
Mountain Bike Buying Guide
Mountain biking is an incredibly diverse sport. Mountain bikes now come in three main flavours. They are XC, Trail and Enduro.
XC – short for cross country, are quick race bikes. They will normally have 29” wheels and come with 100mm of suspension. If you are mainly going to be riding bridleways and natural trails in the South East of England, where our shops are, an XC bike will be the quickest and most efficient option.
Trail – these bikes are designed to be pedalled up and down hill and for use on bridleways and natural trails, but also at dedicated trail centres. They normally come with 130mm or 140mm of suspension travel and can have either 27.5” or 29” wheels, but 29” is quickly becoming the norm. Trail bikes are good all-rounders. They won’t be as fast as an XC bike on the flat but they can handle a lot more challenging terrain, and a few jumps. If you plan on taking your bike to trail centres in Wales, or to the Alps, then a trail bike may be your best option.
Enduro – enduro racing is a thing in and of itself but many people buy enduro bikes for ‘aggressive’ trail riding and uplift days at places like Bike Park Wales. This generally means challenging downhill trails with some big jumps. With around 160mm of suspension travel enduro bikes can take some big hits. They are designed to be efficient enough to pedal up hills but really come into their own when pointed downhill. You get enduro bikes in either 27.5” or 29” wheel sizes as well as mullet setups of 29 at the front and 27.5 at the back.
Men’s and women’s mountain bikes
Nearly all the mountain bikes we sell are now unisex. All of the big brands have gradually stopped doing dedicated men’s and women’s bikes over the last few years. Instead they are focussed on producing bikes in a bigger range of sizes. So, for instance, the Trek Marlin 5 is a unisex bike that now comes in sizes from XXS to XXL large. This means it will fit riders from 4’ 5” to 6’ 5” and everything in between.
Read our full mountain bike buyers guide
Price Match at Cycles uk
We understand that price is important, so we regularly price-check our competitors to make sure we have the best offers available. We recognise that we will not always be the cheapest, so if you see the same product cheaper from any of our competitors then please get in touch via the form below and we will do our best to match any reasonable advertised price.
Frame - Series 3 6061 Aluminium, 26 Wheels, 135x10mm Horizontal Single Speed Dropouts, 73mm Threaded BB, ISCG 05 Tabs
Headset - FSA No 57E, Semi-Sealed Cartridge Bearings, 1 1/8" x 1 1/2
Extras - Marin Chain Tension Device
Extras - Marin MTB Seat Clamp, Bolt Type
| Colours | PURPLE FADE |
| Sizes | Long, Short |
| Brand | Marin |
| Model Year | 2025 |
| Barcodes | 8.43346E+11, 843346130839, 843346130846 |
| SKUs / Part Numbers | 739093001, 739093002 |
Please note: Manufacturers can sometimes change the specification of the products from time to time.
Why buy from Cycles UK?
We Deliver
You can choose how to receive your new bike. You can click and collect from our stores, pick a fast courier delivery or premium hand delivery. Whichever option you choose your bike will be fully assembled and checked by one of our experienced mechanics.
Price Promise
We regularly check our prices against our competitors to ensure that you are getting a good deal. If you find an item cheaper within seven days of purchase, just let us know and ask us to match the price.
Free Insurance
Our partners at Laka provides 30 days of free insurance on all new bikes sold to UK customers. As part of our service, your new bike is automatically covered with 30 days’ FREE insurance against theft and accidental damage.
Comfort Guarantee
Opinions of contact points such as saddles, shoes and grips can vary a lot between different riders. If you buy a contact point from Cycles UK and you don’t find it comfortable, you can return it within 30 days, and we’ll swap it for something else.
How does it work?
- Add 30 days free insurance during checkout
- Complete your purchase
- Receive welcome docs by email
- Ride with peace of mind
Why Sundays?
Trust our 14 years of experience in the bicycle insurance industry. Our comprehensive, customisable, and competitively priced coverage includes easy online quotes, fast claims handling, and expert customer service.
Free 10 day bike insurance on your new bike!
We offer 10 days free cover with all new bikes purchased, provided by our insurance partner VeloLife. You will be covered for the first 10 days of ownership against theft and accidental damage, so you can purchase with confidence.
Give yourself the comfort of no obligation free insurance, make sure you have peace of mind from the moment you leave the store. If anything happens to the bike in the first 10 days of ownership, know you are covered!
with a £ 0.00 deposit.
The total charge for credit is £ 0.00.
Choose an available finance option:
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Please note the above quotation is an indicative cost and actual monthly payments may vary by +/- 2p per month.
Credit subject to status and affordability. Terms & Conditions Apply. Cycles UK Ltd is a credit broker and is Authorised and Regulated by the Financial Conduct Authority. Credit is provided by Novuna Personal Finance, a trading style of Mitsubishi HC Capital UK PLC, authorised and regulated by the Financial Conduct Authority. Financial Services Register no. 704348. The register can be accessed through http://www.fca.org.uk.
24 Month Representative Example:
Purchase Price (incl. VAT) £750
Deposit £75
Loan Amount £675
Interest/Total Charge for Credit £109.32
Total Amount Repayable £859.32
Balance Payable £784.32
By 24 Monthly Repayments of £32.68
15.9% APR Representative
Bank rate of interest 8.1% PA fixed
Please note the above quotation is an indicative cost and actual monthly payments may vary.
For Buy Now Pay Later and Deferred Interest Bearing Credit: Interest is charged from day 1 of your agreement, but not charged on any repayments made during the deferral period. On expiry of the deferral period, interest accrued during the deferral period will be applied to your repayments.
Consumer credit services are only available to over 18s and subject to status.
This is for estimation purposes only. Actual Finance Application is Completed During Checkout.