Item #CN_EVO12

Complete bike spec subject to change


Surly Moonlander, Surly 4130 CroMoly steel. Main triangle double-butted. TIG-welded

Surly Moonlander, Tapered straight blade butted 4130 CroMoly. 51mm IS front disc mount. 135mm-spaced dropouts

Seatpost clamp
Surly Stainless, 30.0mm (Surly stainless included)


Surly O.D. 100mm, 36/22t

Bottom Bracket
Surly Enduro, w/sleeve

Front Derailleur
Shimano SLX FD-676D, Problem Solvers direct mount adapter. Top-pull. Black

Rear Derailleur
Shimano Deore XT RDT780 SGS, Black

Cog or Cassette
Shimano SLX CS-HG81-10, 10-speed 11–34t

KMC x10RB, Silver


Cane Creek 40, 1-1/8˝ threadless. Black

Avid BB7, Cable actuated. 180/160mm rotors front & rear

Brake Levers
Avid SD-7, Black

Shimano SLX SA-109, 2 x 10

Kalloy; AS025N, 31.8mm. 7° rise. 4-bolt. Aluminum. Black

Salsa Salt Flat, 31.8mm. Black

Velo VL2155, Steel rails. Black vinyl. Feels pretty o.k.

Kalloy SP-342, 27.2mm. 350mm. Black



Front Hub
Surly New Disc 135mm, Disc. 32-hole. Black

Rear Hub
Shimano XT 135mm, 756. Disc. 32-hole. Black

Surly Clown Shoe, Single wall aluminum. Welded seam w/cutouts. 100mm width. Black.

DT Swiss Champion, 14g. Black

Surly Bud & Lou, 4.8″, 120tpi

Frame Size Stem Length Stem Angle Handlebar Width Crank Length
Small 90.0 7.0 700.0 170.0
Medium (18) 100.0 7.0 750.0 175.0
Large (20) 110.0 7.0 750.0 175.0
xLarge (22) 120.0 7.0 750.0 180.0
xxLarge (22L) 120.0 7.0 750.0 180.0

Surly 4130 CroMoly steel. Main triangle double-butted. TIG-welded. ED coated.

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

Dual water bottle mounts, Surly Trip Guide full line guides for brake and derailleurs, fender and rack eyelets

Seatpost diameter

Seatpost clamp diameter
30.0mm (Surly stainless included)

1-1/8˝ threadless

Front Derailleur Clamp Diameter
Direct mount 28.6mm diameter (adapter included, Moonlander specific)

Bottom bracket shell
100mm wide, standard English threading (1.37˝ x 24t)

Chainring Clearance
22/36t (NOTE: this is specific to using a Surly offset double crank—use of other cranks may limit number and size of rings and may cause tire/chain rub!)

Tire Clearance
4.8˝ tires on 100mm rims. Hells yes

Tapered straight blade butted 4130 CroMoly. 51mm IS front disc mount. 135mm-spaced dropouts

Titanium Sand
10 in stock
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Additional information

Weight 1 kg
Dimensions 1 x 1 x 1 cm

Titanium Sand

Product Description

Moonlander runs 4.8˝ tires on 100mm rims. Such a large footprint allows you to ride them at very low pressure, which (as with a snowshoe) enables unparalleled traction and float over all kinds of terrain…wet stuff, roots, rocks, pebbles, gravel, sand, and many types of snow. 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 and no people.

Like all of our framesets, Moonlander is made of 4130 cro-moly steel, with tubing designed specifically for this frame. The frame’s geometry is not unlike a standard mountain bike, with a bottom bracket height that supplies plenty of clearance for bushwhacking and monster-trucking while remaining low enough for a stable ride. The toptube maximizes standover height while keeping the headtube fairly high so you can set up your rig with a comfortable, all-day-grind riding position.

The frame features 135mm-spaced horizontal ‘dropouts’ with a derailleur hanger, meaning you can set it up as a singlespeed, with an internal gear hub, or standard derailleur drivetrain. The rear end is offset 28mm to allow the drivetrain and wide tires to play nicely together. Moonlanders come with a 135mm O.L.D. non-offset fork, but if you like being able to swap front and rear wheels you could get one matching the rear offset. In fact, all of our fat forks share the same axle-to-crown and rake measurements, so they’re all interchangeable. The fork sports a 51mm I.S. disc caliper mount designed for a rear brake, and mid-blade thru-eyelets and lower rack barrels for mounting a fender and rack (you’ll probably need to alter something to fit, but the option is there should you choose to).

We offer the Moonlander as a complete bike, with components chosen for their durability and their suitability to the task at hand. Parts include our own strong, light Clown Shoe rims and gnarly Bud and Lou tires. It also comes with our O.D. crank, which supplies plenty of room for the fat shoes while supplying all the gears you need to crawl through muck and fly down hills. Moonlander is also available as a frameset if you would rather kit it out yourself. Frame sizes range from Small (16˝) to XLL (22˝ Extra Long).


L, M, S, Xl, XXL

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