Velopedia Bicycle Archive
Surly Moonlander Frameset
Mountain bicycle from the Velopedia specification archive.
- Model year
- Not published by manufacturer
- Original MSRP
- $1,199.00
- Sizes
- S, M, L, XL
- Colors
- Lunar Dust Gray
- Geometry
- 4 manufacturer sizes · Ride analysis
- Archive ID
- 900000842
- Catalog verified
- August 19, 2026
Current market
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Used-frameset inspection
If you’re buying this frameset used
Before buying: confirm the serial number and exact model, inspect frame and fork alignment, and inventory every included axle, hanger, clamp, headset part, cable guide and proprietary fitting.
Inspect the frame and fork →- 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 →
- Included hardwareInventory every axle, hanger, clamp, headset part, cable guide, frame plug and proprietary fitting included with the frameset. Confirm replacement availability before treating a missing small part as insignificant.
- AlignmentSight along the frame and fork from several directions. Confirm that the fork, rear dropouts, head tube and other visible interfaces appear straight; professional measurement is appropriate when alignment cannot be established visually.
Used-frameset inspection checklist 14 universal checks for a record with limited component data Open checklistClose checklist
The archived record does not contain enough component detail for a fully specification-informed frameset checklist. Use these universal checks on the frameset in front of you, inventory every included part and confirm exact interfaces before choosing components.
Identity and fit
Follow the full used-bike inspection order →Archived: Surly Moonlander Frameset · 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
Alignment
Inspect the frame and fork →Frame interfaces
Inspect the bottom bracket and shell →Before accepting the frameset
Inspect the frame and fork →Have you owned this bike?Help preserve its real-world history by sharing your owner experience.
Share the details that would help another rider understand how this model fits, rides and holds up over time. Velopedia reviews every contribution before publication.
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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 |
Wheels & Tires
| 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 |
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.