Velopedia Bicycle Archive
Surly Moonlander
Mountain bicycle from the Velopedia specification archive.
- Model year
- Not published by manufacturer
- Original MSRP
- $4,199.00
- Sizes
- S, M, L, XL
- Colors
- Lunar Dust Gray
- Geometry
- 4 manufacturer sizes · Ride analysis
- Archive ID
- 900000841
- Catalog verified
- August 19, 2026
Current market
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Velopedia analysis
What the specifications mean
Both 27.5- and 29-inch wheels appear in the record, but it does not establish a mixed front/rear build; confirm the correct diameter for the selected frame size. The archive does not identify the brake system, so its controls, actuation method, pads and braking surfaces need to be checked directly. The rims and tires are tubeless-ready, but that label does not confirm the bike is currently set up without tubes; tape, valves, sealant and tire condition still matter.
Wheel system
27.5 / 29 options
Both diameters are documented, but the archive does not prove a mixed front/rear setup.
Brake inspection
Type not specified
Identify the installed system before choosing parts, cables, hoses or service procedures.
Tire setup
Tubeless-ready
The rims and tires may support tubeless use, but the bike may still be running tubes.
Frame material
Steel
Paint damage and moisture entry matter because corrosion can start externally or inside the frame.
Used-bike inspection
If you’re buying this bike used
Before any test ride: both brakes should stop the bike firmly and release cleanly; both wheels should run true and be securely attached; tires should have no casing damage; and the headset, handlebar, stem, cranks and pedals should have no looseness or play.
Follow the full used-bike inspection order →- FrameCheck paint chips, vent holes and the inside of the seat tube for corrosion. Also look for dents, bent tubes and cracking around welded or brazed joints.Inspect the frame and fork →
- BrakesIdentify the installed brake system before riding or ordering parts. Test every installed brake separately at walking speed, confirm it stops firmly and releases cleanly, then inspect its pads, braking surfaces and complete cable or hose path.Inspect the brakes →
- DrivetrainShift through the full range under light load, measure chain wear and inspect the cassette or freewheel teeth. Skipping or hesitation can indicate wear, poor adjustment or mismatched parts.Check drivetrain wear →
- Wheels & tiresSpin both wheels and watch the rims for side-to-side or vertical movement. Check for dents, cracks, loose or uneven spokes and hub play, then inspect both tire casings for cuts, cracking or exposed threads. If it is set up tubeless, confirm both tires hold pressure and ask when the sealant was last refreshed.Check wheels and tires →
Bike-specific inspection checklist 20 checks based on 5 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: Surly Moonlander · Mountain · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: Surly Moonlander Frame - 100% Surly Chromoly steel. E.D. coated. Triple-butted main triangle. TIG-welded. · Fork: Surly Moonlander Fork - 100% Surly Chromoly steel. 1-1/8" straight steerer with tapered straight blade, TIG-welded, E.D. Coated. 51mm IS front standard disc mount. 197mm x 12mm thru-axle dropouts (axle included). · Steel
Drivetrain
Check drivetrain wear →Archived: Shifters: Pinion Rotary Shifter · Crankset: Pinion for Surly crankset 34T, with Pinion high-offset spider · Bottom bracket: Pinion C1.9 XR 9spd Gearbox · Cassette: FSA Steel 36T Megatooth Chainring · Chain: KMC X10 EPT Anti-Rust
Brakes
Inspect the brakes →Wheels and tires
Check wheels and tires →Archived: Wheel size: 24"; 26"; 27.5"; 29" · Rims: Surly Clown Royal 24", 100mm wide · Hubs: (F) Novatec 12x197mm, Thru-Axle, 32h / (R) Novatec 12x197mm, Thru-Axle, 32h · Front tire: Surly Molenda Tire 24 X 6.2”, 60tpi, Tubeless Ready · Rear tire: Surly Molenda Tire 24 X 6.2”, 60tpi, Tubeless Ready
Controls and contact points
Archived: Headset: Cane Creek 40 · Stem: Promax, 31.8, 4-bolt · Seatpost: TransX YSP15JL Dropper, 125mm travel (100mm travel on SM) · Saddle: WTB Volt Medium
Before and during the test ride
Follow the full used-bike inspection order →Interpretation based on the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.
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Frameset
| Frame Construction | Surly Moonlander Frame - 100% Surly Chromoly steel. E.D. coated. Triple-butted main triangle. TIG-welded. |
|---|---|
| Frame Material | Steel |
| Fork | Surly Moonlander Fork - 100% Surly Chromoly steel. 1-1/8" straight steerer with tapered straight blade, TIG-welded, E.D. Coated. 51mm IS front standard disc mount. 197mm x 12mm thru-axle dropouts (axle included). |
| Fork Material | Steel |
Drivetrain
| Shifters | Pinion Rotary Shifter |
|---|---|
| Front Derailleur | N/A |
| Rear Derailleur | N/A |
| Crankset | Pinion for Surly crankset 34T, with Pinion high-offset spider |
| Bottom Bracket | Pinion C1.9 XR 9spd Gearbox |
| Cassette | FSA Steel 36T Megatooth Chainring |
| Chain | KMC X10 EPT Anti-Rust |
Cockpit & Contact Points
| Headset | Cane Creek 40 |
|---|---|
| Stem | Promax, 31.8, 4-bolt |
| Saddle | WTB Volt Medium |
| Seatpost | TransX YSP15JL Dropper, 125mm travel (100mm travel on SM) |
Wheels & Tires
| Hubs | (F) Novatec 12x197mm, Thru-Axle, 32h / (R) Novatec 12x197mm, Thru-Axle, 32h |
|---|---|
| Rims | Surly Clown Royal 24", 100mm wide |
| Front Tire | Surly Molenda Tire 24 X 6.2”, 60tpi, Tubeless Ready |
| Rear Tire | Surly Molenda Tire 24 X 6.2”, 60tpi, Tubeless Ready |
| Wheel Size | 24"; 26"; 27.5"; 29" |
Size-specific frame data
Geometry
Manufacturer-published geometry normalized for consistent archival comparison. Effective top tube and reach remain separate measurements because they describe different aspects of fit.
| Measurement | Small | Medium | Large | X-Large |
|---|---|---|---|---|
| Seat tube | 368 mm | 419 mm | 480 mm | 521 mm |
| Effective top tube | 575 mm | 605 mm | 635 mm | 665 mm |
| Head tube | 120 mm | 150 mm | 170 mm | 190 mm |
| Head-tube angle | 68.5° | 68.5° | 68.5° | 68.5° |
| Seat-tube angle | 73° | 73° | 73° | 73° |
| Chainstay / rear center | 562 mm | 562 mm | 562 mm | 562 mm |
| Wheelbase | 1215 mm | 1248 mm | 1280 mm | 1311 mm |
| Bottom-bracket drop | 45 mm | 45 mm | 45 mm | 45 mm |
| Reach | 398 mm | 420 mm | 444 mm | 468 mm |
| Stack | 578 mm | 606 mm | 625 mm | 644 mm |
| Standover height | 736 mm | 769 mm | 793 mm | 801 mm |
| Fork offset / rake | 50 mm | 50 mm | 50 mm | 50 mm |
| Fork length / axle-to-crown | 460 mm | 460 mm | 460 mm | 460 mm |
| Crank length | 170 mm | 170 mm | 170 mm | 170 mm |
| Stem length | 60 mm | 60 mm | 70 mm | 80 mm |
| Handlebar width | 735 mm | 735 mm | 735 mm | 735 mm |
Geometry source: Manufacturer HTML geometry table ↗ Measurements can vary by configuration, wheel size, or flip-chip position where noted by the manufacturer.
Geometry interpretation
What this geometry means
Small geometry
Riding position
The 578 mm stack is tall relative to the 398 mm reach, pointing to a more upright front-end position rather than an especially long, low cockpit. The 73° effective seat angle is comparatively relaxed for a modern mountain bike, placing the seated position farther behind the bottom bracket than a steep climbing-oriented layout.
Handling tendencies
A 68.5° head angle combined with a 1215 mm wheelbase points to quicker-steering and more responsive steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes. The 562 mm rear center is relatively long, tending to keep the rider more centered between the wheels and the rear of the bike planted under load.
Medium geometry
Riding position
The 606 mm stack is tall relative to the 420 mm reach, pointing to a more upright front-end position rather than an especially long, low cockpit. The 73° effective seat angle is comparatively relaxed for a modern mountain bike, placing the seated position farther behind the bottom bracket than a steep climbing-oriented layout.
Handling tendencies
A 68.5° head angle combined with a 1248 mm wheelbase points to quicker-steering and more responsive steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes. The 562 mm rear center is relatively long, tending to keep the rider more centered between the wheels and the rear of the bike planted under load.
Large geometry
Riding position
The 625 mm stack is tall relative to the 444 mm reach, pointing to a more upright front-end position rather than an especially long, low cockpit. The 73° effective seat angle is comparatively relaxed for a modern mountain bike, placing the seated position farther behind the bottom bracket than a steep climbing-oriented layout.
Handling tendencies
A 68.5° head angle combined with a 1280 mm wheelbase points to quicker-steering and more responsive steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes. The 562 mm rear center is relatively long, tending to keep the rider more centered between the wheels and the rear of the bike planted under load.
X-Large geometry
Riding position
A 468 mm reach paired with 644 mm of stack gives this size a moderate frame proportion: roomy enough when standing without pushing strongly toward either a very low or very upright front end. The 73° effective seat angle is comparatively relaxed for a modern mountain bike, placing the seated position farther behind the bottom bracket than a steep climbing-oriented layout.
Handling tendencies
A 68.5° head angle combined with a 1311 mm wheelbase points to quicker-steering and more responsive steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes. The 562 mm rear center is relatively long, tending to keep the rider more centered between the wheels and the rear of the bike planted under load.
Across the size range
From Small to X-Large, reach grows by 70 mm and stack by 66 mm, showing how the frame becomes both longer and taller through the published size range. The rear center stays essentially constant at about 562 mm across sizes, so most of the wheelbase growth happens in the front half of the bike rather than by lengthening the rear triangle.
Geometry describes frame proportions and likely tendencies, not a ride test. Rider proportions, cockpit setup, tires, suspension settings, wheel configuration, and component choices can materially change how a bicycle fits and feels.
Gallery
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.