Velopedia Bicycle Archive
2026 Salsa Blackthorn 145 Frameset
Mountain bicycle from the Velopedia specification archive.
- Original MSRP
- $1,999.00
- Sizes
- S, M, L, XL
- Colors
- Black Spruce
- Geometry
- 4 manufacturer sizes · Ride analysis
- Archive ID
- 900000408
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 →- FrameLook closely for dents and hairline cracks around welds, the head tube and bottom-bracket area. Cosmetic scratches matter less than a change in shape or a crack line.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 13 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: 2026 Salsa Blackthorn 145 Frameset · Mountain · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: 6061 Aluminum
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 | 6061 Aluminum |
|---|---|
| Frame Material | Aluminum |
Cockpit & Contact Points
| Headset | FSA Orbit 1.5E ZS NO.57E |
|---|
Wheels & Tires
| Wheel Size | 27.5" |
|---|
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 | 405 mm | 430 mm | 455 mm | 480 mm |
| Effective top tube | 589 mm | 611 mm | 633 mm | 655 mm |
| Head tube | 100 mm | 110 mm | 120 mm | 130 mm |
| Head-tube angle | 63.9- 63.6 | 63.9- 63.6 | 63.9- 63.6 | 63.9- 63.6 |
| Seat-tube angle | 77.4- 77.1 | 77.4- 77.1 | 77.4- 77.1 | 77.4- 77.1 |
| Chainstay / rear center | 432 mm | 432 mm | 432 mm | 432 mm |
| Wheelbase | 1219 mm | 1243 mm | 1268 mm | 1292 mm |
| Bottom-bracket drop | 25 mm | 25 mm | 25 mm | 25 mm |
| Bottom-bracket height | 351 mm | 351 mm | 351 mm | 351 mm |
| Reach | 452 mm | 472 mm | 492 mm | 512 mm |
| Stack | 612 mm | 621 mm | 630 mm | 639 mm |
| Standover height | 746 mm | 746 mm | 747 mm | 747 mm |
| Fork offset / rake | 43 mm | 43 mm | 43 mm | 43 mm |
| Fork length / axle-to-crown | 571 mm | 571 mm | 571 mm | 571 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
The archived table contains multiple manufacturer geometry states. Velopedia preserves source order and analyzes each state separately rather than averaging the published values.
Small geometry
Configuration
Riding position
A 452 mm reach paired with 612 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. Its 77.4° effective seat angle places the seated rider relatively forward, a layout that generally helps keep body weight centered on steep climbs.
Handling tendencies
A 63.9° head angle combined with a 1219 mm wheelbase points to strongly stability-oriented 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.
Configuration changes
Compared with Configuration 2, this configuration steepens the head angle by 0.3°.
Archive context
Its reach of 452 mm sits toward the longer end. Its wheelbase of 1219 mm sits toward the longer end. The head angle of 63.9° sits toward the slacker end.
Riding position
A 452 mm reach paired with 612 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. Its 77.1° effective seat angle places the seated rider relatively forward, a layout that generally helps keep body weight centered on steep climbs.
Handling tendencies
A 63.6° head angle combined with a 1219 mm wheelbase points to strongly stability-oriented 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.
Configuration changes
Compared with Configuration 1, this configuration slackens the head angle by 0.3°.
Archive context
The head angle of 63.6° sits toward the slacker end. Its reach of 452 mm sits toward the longer end. Its wheelbase of 1219 mm sits toward the longer end.
Medium geometry
Configuration
Riding position
A 472 mm reach paired with 621 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. Its 77.4° effective seat angle places the seated rider relatively forward, a layout that generally helps keep body weight centered on steep climbs.
Handling tendencies
A 63.9° head angle combined with a 1243 mm wheelbase points to strongly stability-oriented 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.
Configuration changes
Compared with Configuration 2, this configuration steepens the head angle by 0.3°.
Archive context
Its reach of 472 mm sits toward the longer end. The seat angle of 77.4° sits toward the steeper end. Its bottom-bracket drop of 25 mm sits toward the shallower-drop end.
Riding position
A 472 mm reach paired with 621 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. Its 77.1° effective seat angle places the seated rider relatively forward, a layout that generally helps keep body weight centered on steep climbs.
Handling tendencies
A 63.6° head angle combined with a 1243 mm wheelbase points to strongly stability-oriented 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.
Configuration changes
Compared with Configuration 1, this configuration slackens the head angle by 0.3°.
Archive context
Its reach of 472 mm sits toward the longer end. Its bottom-bracket drop of 25 mm sits toward the shallower-drop end. The head angle of 63.6° sits toward the slacker end.
Large geometry
Configuration
Riding position
With 492 mm of reach and 630 mm of stack, the frame has a relatively long, low proportion that should leave plenty of room when standing and put the front end toward the lower side of modern mountain-bike fit. Its 77.4° effective seat angle places the seated rider relatively forward, a layout that generally helps keep body weight centered on steep climbs.
Handling tendencies
A 63.9° head angle combined with a 1268 mm wheelbase points to strongly stability-oriented 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.
Configuration changes
Compared with Configuration 2, this configuration steepens the head angle by 0.3°.
Archive context
Its reach of 492 mm sits toward the longer end. The seat angle of 77.4° sits toward the steeper end. Its bottom-bracket drop of 25 mm sits toward the shallower-drop end.
Riding position
With 492 mm of reach and 630 mm of stack, the frame has a relatively long, low proportion that should leave plenty of room when standing and put the front end toward the lower side of modern mountain-bike fit. Its 77.1° effective seat angle places the seated rider relatively forward, a layout that generally helps keep body weight centered on steep climbs.
Handling tendencies
A 63.6° head angle combined with a 1268 mm wheelbase points to strongly stability-oriented 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.
Configuration changes
Compared with Configuration 1, this configuration slackens the head angle by 0.3°.
Archive context
Its reach of 492 mm sits toward the longer end. Its bottom-bracket drop of 25 mm sits toward the shallower-drop end. The head angle of 63.6° sits somewhat slacker than typical.
X-Large geometry
Configuration
Riding position
With 512 mm of reach and 639 mm of stack, the frame has a relatively long, low proportion that should leave plenty of room when standing and put the front end toward the lower side of modern mountain-bike fit. Its 77.4° effective seat angle places the seated rider relatively forward, a layout that generally helps keep body weight centered on steep climbs.
Handling tendencies
A 63.9° head angle combined with a 1292 mm wheelbase points to strongly stability-oriented 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.
Configuration changes
Compared with Configuration 2, this configuration steepens the head angle by 0.3°.
Archive context
Its bottom-bracket drop of 25 mm sits toward the shallower-drop end. The seat angle of 77.4° sits somewhat steeper than typical. Its reach of 512 mm sits somewhat longer than typical.
Riding position
With 512 mm of reach and 639 mm of stack, the frame has a relatively long, low proportion that should leave plenty of room when standing and put the front end toward the lower side of modern mountain-bike fit. Its 77.1° effective seat angle places the seated rider relatively forward, a layout that generally helps keep body weight centered on steep climbs.
Handling tendencies
A 63.6° head angle combined with a 1292 mm wheelbase points to strongly stability-oriented 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.
Configuration changes
Compared with Configuration 1, this configuration slackens the head angle by 0.3°.
Archive context
Its bottom-bracket drop of 25 mm sits toward the shallower-drop end. The head angle of 63.6° sits toward the slacker end. Its reach of 512 mm sits somewhat longer than typical.
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.