Surly Moonlander Fat Bike Frameset
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Surly Moonlander Fat Bike Frameset

Now £439.99 (FREE UK Delivery)
Was: £649.99 You Save: £210.00 (32%)
Available Offline Only Please contact us for details
Item in Stock  |  555Usually dispatched within 24 hours
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You know by now that Moonlander picks up where Pugsley left off. Moonlander accommodates staggeringly wide 4.7˝ tyres on 100mm rims. Such a large footprint allows you to ride them at very low pressure, and like a snowshoe enables even greater traction and float over all kinds of terrain...wet stuff, roots, rocks, pebbles, gravel, sand, and many types of snow.

Like all of Surly framesets, the Moonlander is made of Surly 4130 CroMoly steel. It features 135mm-spaced, 28mm-offset, rear-loading Surly horizontal dropouts (track ends) with a derailleur hanger...meaning you can set it up as a singlespeed or geared bike, derailleured or internally geared. The bottom bracket height gives you clearance for bushwhacking and monster-trucking. The dropped and gusseted toptube maximizes standover height. And the tallish headtube allows you to set your rig up with a comfortable riding position for those long days grinding out miles in the saddle.

Moonlander, like its name implies, is meant to go beyond where normal bikes, even normal fat bikes, can go. It is designed from the ground up to ride where there are no roads, no trails, no people.


  • Tubing: Surly 4130 CroMoly steel. Main triangle double-butted. TIG-welded
  • Rear dropouts: Surly horizontal rear load, with derailleur hanger; 135mm O.L.D.; offset 28.0mm
  • Brake compatibility: 51mm IS disc mounts frame and fork. NOTE: Unlike Pugsley, Moonlander uses front caliper adapters for the front brake and rear caliper adapters for the rear brake
  • Braze-ons: Dual water bottle mounts, Surly Trip Guide full line guides for brake and derailleurs, fender and rack eyelets
  • Seatpost diameter: 27.2mm
  • Seatpost clamp: 30.0mm (Surly stainless included)
  • Headset/Steertube: 1-1/8˝ threadless
  • Front derailleur clamp: Direct mount 28.6mm diameter (adapter included)
  • Bottom bracket shell: 100mm wide, standard English threading (1.37˝ x 24t)
  • Chainring clearance: 22/36t (NOTE: this is this specific to using a Surly Mr. Whirly offset double cranks —use of other cranks may limit number and size of rings and may cause tire/chain rub!)
  • Tire clearance: 4.7˝ tires on 100mm rims. Hells yes.
  • Fork: Surly Moonlander, 135mm O.L.D.,4130 CroMoly. 51mm IS front disc mount. Suspension corrected for 100mm travel forks, but why would you need to do that?
  • Colour: Champain

We hope that you find our website easy to use but if you do have any questions at all please feel free to call our sales team on 0208 508 0682 or email info@tritoncycles.co.uk for advice.


Payment - We accept most major credit and debit cards through our secure payment provider Sagepay. All transactions are 100% secure so you may shop with confidence that your details are safe.

0% finance available on selected bikes. Spread the cost of your new bike over 6-36 months. Min. 10% deposit. Terms and Conditions apply.


We also accept Cyclescheme vouchers, for details of how to place an order with a voucher please contact our sales team on 0208 508 0682.

Free Delivery - Delivery is free on orders over £20, with delivery starting from £2.95 for orders below this value. There are surcharges for international deliveries, off-shore deliveries and some areas of the UK. Accurate delivery costs will be provided at checkout where applicable. Our dispatch time for in-stock items is usually 24-48 hours and delivery typically takes a further 2-3 working days. Please ensure you select the correct delivery options to display the correct postage cost to avoid any delay on your order. Not selecting the correct options may incur additional charges.

Bikes - All bikes are checked in our workshop prior to dispatch. Bike orders are typically dispatched within 48 hours of your order. Please note - most bikes are delivered partially assembled - this varies from model to model, please call to confirm what building is required prior to ordering.

Delivery for International Orders - Please note, items sent outside the EU are sold exclusive of VAT but may be subject to import duties and taxes, which may be levied once a shipment reaches your country. For details of current customs charges please contact your local Customs authorities.

Is your country not listed on our website? Feel free to get in contact with us and we will quote you a price! Message us on our Contact Us page and make sure to include your postal code/zip code.

We will always try our best to meet agreed delivery times, however we cannot guarantee them due to third party couriers or workshop load. We shall not be liable for any consequential losses due to delayed delivery times.

Courier Selection - Choosing the incorrect shipping option for your country/location may cause delays as we may have to amend the order and apply any additional shipping fees.

Stock Check - The majority of our products are usually in stock and we try to keep our stock levels as up-to-date and as accurate as possible. However sometimes our system may not be updated in time and a product may be out of stock despite the product page showing it as 'In Stock'. If you are interested in a product and would like to double check the availability of it, please feel free to contact us before placing your order.

Dispatched Dates/Due in Dates (Pre-orders) - We try to provide as accurate as possible information on the arrival of our pre-order products. The dispatched dates/due in dates shown are an estimate of when the products will be available as provided by our suppliers. The dispatched dates/due in dates are subject to change. We will do our best to keep our customers updated.

At Triton Cycles we aim to provide a returns service that is simple and hassle-free.

Should you need to return anything to us, it is very important that you telephone us first to advise us of your intention and the reason why you wish to return the goods. If you're not completely satisfied with an item you may return it within 14 days of purchase, and as long as the item isn't fitted or used we're happy to receive it back for a refund or exchange. Return shipping costs in this instance are non-refundable.

If the item is being returned as a result of our error i.e. damaged, defective, wrong item sent etc, we will refund Royal Mail First Class or Standard Parcel postage costs. If this is the case please include a copy of your purchase receipt when you return the goods for inspection. Please DO NOT sign for goods if you think that they are damaged, or the packaging has been tampered with. Instead, refuse to accept the delivery and contact us immediately(within 3 working days) so that we can take the matter up with our courier. Replacements will be sent to you as soon as possible. Signing for goods later found to be unacceptably damaged in transit complicates negotiations with the courier in dealing with your complaint. However, if a minor component is missing or broken(e.g. a reflector) please DO NOT return the whole bike. Simply contact us and we will replace the part as soon as possible. Please DO NOT discard any original packaging until you are fully satisfied with your purchase. Should you need to return a bicycle, couriers will not transport a machine not in the original or suitable packaging. Warranty Claims: All goods purchased from Triton are covered by a full warranty and generally covers manufacturing faults and defects including poor workmanship. If you think your item is faulty and would like to make a warranty claim then please phone/email us before returning any goods - we may be able to solve your problem without you incurring any postage costs.