Velopedia Bicycle Archive
2025 Cannondale Synapse LAB71 Frameset
Original manufacturer specifications including 700c wheels, geometry for 7 published sizes.
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What Velopedia knows
- Model year
- 2025
- Category
- Road
- Original MSRP
- $5,999.00
- Sizes
- 48, 51, 54, 56, 58, 61
- Colors
- Black Marble
- Geometry
- 7 manufacturer sizes · Geometry context
- Record coverage
- 7 preserved details · archived image · original MSRP · preserved geometry
- Archive ID
- 900000145
Frameset
| Frame Construction | LAB71 Synapse Hi-MOD Carbon, Proportional Response construction, integrated cable routing, downtube Stashport, 12x142 thru-axle, UDH, BSA 68mm threaded BB, flat mount disc, integrated seat binder, fender mounts |
|---|---|
| Frame Material | Carbon fiber |
| Fork | Lab71 Synapse Hi-MOD Carbon, integrated crown race, 12x100mm thru-axle, flat mount disc, internal routing, 1-1/8" to 1-1/5" Delta steerer, 55mm offset, fender mounts |
| Fork Material | Carbon fiber |
Cockpit & Contact Points
| Headset | Integrated, 1-1/8" - 1-1/2", w/ integrated spacers |
|---|---|
| Seatpost | Cannondale C1 Aero 27 Carbon, SmartSense compatible, 330mm length, 0mm offset (44-48cm), 15mm offset (51-61cm) |
Wheels & Tires
| Wheel Size | 700c |
|---|
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 | 44 | 48 | 51 | 54 | 56 | 58 | 61 |
|---|---|---|---|---|---|---|---|
| Seat tube | 407 mm | 407 mm | 443 mm | 480 mm | 520 mm | 550 mm | 590 mm |
| Effective top tube | 522 mm | 533 mm | 544 mm | 555 mm | 567 mm | 580 mm | 598 mm |
| Top tube | 478 mm | 486 mm | 497 mm | 509 mm | 523 mm | 537 mm | 556 mm |
| Head tube | 91 mm | 108 mm | 127 mm | 150 mm | 171 mm | 196 mm | 227 mm |
| Head-tube angle | 69.8° | 70.9° | 71.3° | 71.3° | 71.3° | 71.3° | 71.3° |
| Seat-tube angle | 73° | 73° | 73° | 73° | 73° | 73° | 73° |
| Chainstay / rear center | 425 mm | 425 mm | 425 mm | 425 mm | 430 mm | 430 mm | 430 mm |
| Wheelbase | 1003 mm | 1005 mm | 1013 mm | 1026 mm | 1044 mm | 1058 mm | 1077 mm |
| Bottom-bracket drop | 75 mm | 75 mm | 75 mm | 73 mm | 73 mm | 70 mm | 70 mm |
| Bottom-bracket height | 278 mm | 278 mm | 278 mm | 280 mm | 280 mm | 283 mm | 283 mm |
| Reach | 366 mm | 371 mm | 376 mm | 381 mm | 387 mm | 393 mm | 402 mm |
| Stack | 510 mm | 530 mm | 550 mm | 570 mm | 590 mm | 610 mm | 640 mm |
| Standover height | 714 mm | 722 mm | 752 mm | 785 mm | 815 mm | 843 mm | 878 mm |
| Fork offset / rake | 55 mm | 55 mm | 55 mm | 55 mm | 55 mm | 55 mm | 55 mm |
| Front center | 589 mm | 592 mm | 600 mm | 612 mm | 624 mm | 638 mm | 657 mm |
| Trail | 71 mm | 64 mm | 61 mm | 61 mm | 61 mm | 61 mm | 61 mm |
| Fork length / axle-to-crown | 393 mm | 393 mm | 393 mm | 393 mm | 393 mm | 393 mm | 393 mm |
| Wheel size | 700c | 700c | 700c | 700c | 700c | 700c | 700c |
Geometry source: Exact published geometry image match ↗ Measurements can vary by configuration, wheel size, or flip-chip position where noted by the manufacturer.
Geometry tools
Analyze a published size
44 geometry
Archive context: The seat angle of 73° sits toward the more relaxed end. The head angle of 69.8° sits toward the slacker end. The chainstay of 425 mm sits toward the longer rear-center end.
Compared with 68 distinct road geometries in the XS-equivalent size cohort from model years 2023–2027 in the Velopedia archive.48 geometry
Archive context: The seat angle of 73° sits toward the more relaxed end. The head angle of 70.9° sits toward the slacker end. The chainstay of 425 mm sits toward the longer rear-center end.
Compared with 92 distinct road geometries in the Small-equivalent size cohort from model years 2023–2027 in the Velopedia archive.51 geometry
Archive context: The seat angle of 73° sits toward the more relaxed end. Its wheelbase of 1013 mm sits toward the longer end. The chainstay of 425 mm sits toward the longer rear-center end.
Compared with 92 distinct road geometries in the Small-equivalent size cohort from model years 2023–2027 in the Velopedia archive.54 geometry
Archive context: The seat angle of 73° sits toward the more relaxed end. Its wheelbase of 1026 mm sits toward the longer end. The chainstay of 425 mm sits toward the longer rear-center end.
Compared with 93 distinct road geometries in the Medium-equivalent size cohort from model years 2023–2027 in the Velopedia archive.56 geometry
Archive context: The head angle of 71.3° sits toward the slacker end. The chainstay of 430 mm sits toward the longer rear-center end. The seat angle of 73° sits toward the more relaxed end.
Compared with 81 distinct road geometries in the Large-equivalent size cohort from model years 2023–2027 in the Velopedia archive.58 geometry
Archive context: The head angle of 71.3° sits toward the slacker end. The chainstay of 430 mm sits toward the longer rear-center end. Its trail of 61 mm sits toward the higher-trail end.
Compared with 67 distinct road geometries in the XL-equivalent size cohort from model years 2023–2027 in the Velopedia archive.61 geometry
Archive context: The chainstay of 430 mm sits toward the longer rear-center end. The head angle of 71.3° sits toward the slacker end. Its wheelbase of 1077 mm sits toward the longer end.
Compared with 39 distinct road geometries in the XXL-equivalent size cohort from model years 2023–2027 in the Velopedia archive.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 →- FrameInspect the frame in bright light, especially around the head tube, bottom bracket, chainstays and clamped areas. Look for cracks, ripples, crushed sections or signs of a previous impact.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: 2025 Cannondale Synapse LAB71 Frameset · Road · Published sizes: 48, 51, 54, 56, 58, 61
Frame and fork
Inspect the frame and fork →Archived: Frame: LAB71 Synapse Hi-MOD Carbon, Proportional Response construction, integrated cable routing, downtube Stashport, 12x142 thru-axle, UDH, BSA 68mm threaded BB, flat mount disc, integrated seat binder, fender mounts · Fork: Lab71 Synapse Hi-MOD Carbon, integrated crown race, 12x100mm thru-axle, flat mount disc, internal routing, 1-1/8" to 1-1/5" Delta steerer, 55mm offset, fender mounts · Carbon fiber
Alignment
Inspect the frame and fork →Frame interfaces
Inspect the bottom bracket and shell →Before accepting the frameset
Inspect the frame and fork →Build relationships are limited to the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.
Have you owned this bike?Help document firsthand fit, ride and maintenance details that may no longer be available.
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.