To improve your shopping experience today and in the future, this site uses cookies.
I Accept Cookies

Surly Big Fat Dummy Steel Cargo Bike in Blue

Surly - Bikes/Frames

Surly Big Fat Dummy Steel Cargo Bike in Blue

£2,880.00 £3,200.00
Save 10%
in Customer Rewards when you buy this item today
Earn Rewards
When you buy the Surly Big Fat Dummy Steel Cargo Bike in Blue, you will earn of rewards points to spend on your next purchase from us, anything online and instore.

Hassle free returns




Our policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

Several types of goods are exempt from being returned:

- Gift cards

- Personalised or custom-made products

- Hazardous materials, or flammable liquids or gases.

- Downloadable software products

- Helmets and other safety equipment

To complete your return, we require a receipt or proof of purchase.

Please do not send your purchase back to the manufacturer.


Online and Telephone Orders

If you have purchased your item without seeing it first, you can cancel your order within 14 days of receiving your item. You then have another 14 days to return the item to us t item must be returned to us.

A refund will be provided within 14 days of us receiving your returned item.


Refunds (if applicable)

Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.

If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.

There are certain situations where only partial refunds (if applicable) may be granted:

Any item not in its original condition, is damaged or missing parts for reasons not due to our error.

Any item that is returned more than 30 days after deliver


Late or missing refunds (if applicable)

If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted.

If you’ve done all of this and you still have not received your refund yet, please contact us at


Sale Items (if applicable)

Only regular priced items may be refunded, unfortunately sale items cannot be refunded.


Exchanges (if applicable)

We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at and send your item to: 68-70 Dickenson Road, Manchester, M14 5HF, United Kingdom.



If the item was marked as a gift when purchased and shipped directly to you, you’ll receive a gift credit for the value of your return. Once the returned item is received, a gift certificate will be mailed to you.

If the item wasn’t marked as a gift when purchased, or the gift giver had the order shipped to themselves to give to you later, we will send a refund to the gift giver and they will find out about your return.



To return your product, you should mail your product to: 68-70 Dickenson Road, Manchester, M14 5HF, United Kingdom.

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.

Depending on where you live, the time it may take for your exchanged product to reach you, may vary.


Surly Big Fat Dummy Steel Cargo Bike in Blue

Season : 2019

Brand : Surly - Bikes/Frames

Code : 5su18-fatdummy-buBliolet

Weight : 0KG

Big Fat Dummy is truly a hulking beast of a bike. Maximalist bikepackers, those looking to make bikepacking a family affair, and those that help maintain their local trails will appreciate the Big Fat Dummy hauling abilities.

At first glance, it might just seem like a beefed-up version of Big Dummy, but that’s actually not the case. Specifically designed around fat tires, it has a longer toptube and slacker headtube offering the most stable, stiff, and predictable ride possible while hauling a lot of cargo.

  • Single-piece frame increases stiffness and decreases torsional flex
  • Human cargo compliant with the use of Dummy Rail Collars
  • Three-pack mounts, double water bottle bosses on seattube, internal dropper post routing
  • Clearance for 26" x 5.25" tires or 29” x 3.0” tires


Technical Information
  • FrameSurly 4130 CroMoly steel
  • ForkSurly Wednesday
  • HeadsetCane Creek 40 series
  • StemAnswer ProTaper
  • SaddleWTB Volt
  • SeatpostH.L. 9mm offset 2 bolt
  • Front DerailleurSRAM GX 2x11 high direct mount
  • Rear DerailleurSRAM GX 2x11 long cage type 2.1
  • Gear LeversSRAM GX 2x11
  • ChainKMX X11 anti rust
  • CranksetRace Face 36/22
  • CassetteSunrace 11s 11/42
  • Bottom BracketRace Face
  • Brake LeversSRAM Level T
  • BrakesSRAM Level T
  • RimsSurly My Other Brother Darryl
  • HubsSalsa 150x15 (front), Salsa 197x12 (rear)
  • TyresSurly Edna
  • ColourBliolet
Sizing Information

Big Dummy Fat Geometry

  • in
  • mm
Reach 408 432 448
Stack 578 597 625
Head Tube Angle 69.0° 69.0° 69.0°
Head Tube Length 100 120 150
Seat Tube Length 356 432 508
BB Drop 55 55 55
Wheelbase 1532 1563 1590
Chainstay Length 875 875 875
Top Tube Length, Actual 584 598 617.3
Top Tube Length, Effective 590 620 645
Seat Tube Angle 72.5° 72.5° 72.5°
Standover Height 746 792 841
Stem Length 60 70 80
Stem Angle
Handlebar Width 750 800 800
Crank Length 170 175 175
Fork Length 468 468 468
Fork Rake 47 47 47


Professional Opinion
Product Reviews
Write a review
0 As rated by 0 Customers

Write a review

Your name
Your email address
How would you rate it?
Would You Recomend this product?
Let others know your opinion
Submit Review Close
Question(s) answered about this product
Ask a question
Questions asked regarding this product

Ask a question

Your name
Your email address
Your Phone Number
Your question
Submit Question  Close
Home Cargo Bikes Bikes Surly - Bikes/Frames Bikes Cargo
Have you found the Cheaper?
Ask us to Price Match it now

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

You 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 and get it sent out to you - it often never even hits the stock room shelves!


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.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery Dates

Estimated Delivery 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 Dates provided on product pages.