Velopedia Bicycle Archive
2026 X-LAB GT8 Frameset
Original manufacturer specifications including 1.78 kg / 3.92 lbs (Size M, w/o headsets) published weight, geometry for 6 published sizes.
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What Velopedia knows
- Model year
- 2026
- Category
- Gravel & Cyclocross
- Original MSRP
- $1,999.00
- Sizes
- XS, S, M, L, XL, XXL
- Colors
- Afterburner Black
- Weight
- 1.78 kg / 3.92 lbs (Size M, w/o headsets)
- Geometry
- 6 manufacturer sizes · Geometry context
- Record coverage
- 6 preserved details · 4 archived images · original MSRP · preserved geometry
- Archive ID
- 900001317
Frameset
| Frame Construction | XDS Carbon Frame, Toray T-800, UDH Compatible |
|---|---|
| Frame Material | Carbon |
| Fork | XDS Carbon Fork, Toray T-800, 100x12mm Thru-Axle |
| Fork Material | Carbon |
Cockpit & Contact Points
| Seatpost | XDS Carbon 27.2mm |
|---|
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 | XS | S | M | L | XL | XXL |
|---|---|---|---|---|---|---|
| Seat tube | 435 mm | 447 mm | 471 mm | 491 mm | 532 mm | 577 mm |
| Top tube | 506 mm | 525 mm | 547 mm | 566 mm | 585 mm | 605 mm |
| Head tube | 80 mm | 100 mm | 120 mm | 140 mm | 165 mm | 190 mm |
| Head-tube angle | 70° | 70° | 71° | 71° | 71° | 71° |
| Seat-tube angle | 76° | 75° | 74° | 74° | 73° | 73° |
| Chainstay / rear center | 435 mm | 435 mm | 435 mm | 435 mm | 435 mm | 435 mm |
| Wheelbase | 1020 mm | 1032 mm | 1031 mm | 1046 mm | 1061 mm | 1078 mm |
| Bottom-bracket drop | 80 mm | 80 mm | 80 mm | 80 mm | 80 mm | 80 mm |
| Reach | 370 mm | 379 mm | 384 mm | 392 mm | 399 mm | 408 mm |
| Stack | 519 mm | 540 mm | 565 mm | 584 mm | 607 mm | 631 mm |
| Standover height | 715 mm | 730 mm | 755 mm | 773 mm | 807 mm | 838 mm |
| Front center | 598 mm | 610 mm | 609 mm | 624 mm | 638 mm | 655 mm |
Geometry source: X-LAB first-party Basic geometry table ↗ Measurements can vary by configuration, wheel size, or flip-chip position where noted by the manufacturer.
Geometry tools
Analyze a published size
XS geometry
Archive context: The seat angle of 76° sits toward the steeper end. Its stack of 519 mm sits toward the lower end. Its bottom-bracket drop of 80 mm sits toward the deeper-drop end.
Compared with 34 distinct cyclocross/gravel geometries in the XS-equivalent size cohort from model years 2024–2027 in the Velopedia archive.S geometry
Archive context: The seat angle of 75° sits toward the steeper end. Its bottom-bracket drop of 80 mm sits toward the deeper-drop end. Its stack of 540 mm sits somewhat lower than typical.
Compared with 81 distinct cyclocross/gravel geometries in the Small-equivalent size cohort from model years 2024–2027 in the Velopedia archive.M geometry
Archive context: Its bottom-bracket drop of 80 mm sits toward the deeper-drop end. Its stack of 565 mm sits toward the lower end. The chainstay of 435 mm sits somewhat longer than typical.
Compared with 93 distinct cyclocross/gravel geometries in the Medium-equivalent size cohort from model years 2024–2027 in the Velopedia archive.L geometry
Archive context: Its bottom-bracket drop of 80 mm sits toward the deeper-drop end. Its stack of 584 mm sits toward the lower end. The seat angle of 74° sits somewhat steeper than typical.
Compared with 66 distinct cyclocross/gravel geometries in the Large-equivalent size cohort from model years 2024–2027 in the Velopedia archive.XL geometry
Archive context: Its bottom-bracket drop of 80 mm sits toward the deeper-drop end. Its reach of 399 mm sits toward the shorter end. Its stack of 607 mm sits toward the lower end.
Compared with 71 distinct cyclocross/gravel geometries in the XL-equivalent size cohort from model years 2024–2027 in the Velopedia archive.XXL geometry
Archive context: Its bottom-bracket drop of 80 mm sits toward the deeper-drop end. The chainstay of 435 mm sits toward the longer rear-center end. The head angle of 71° sits somewhat slacker than typical.
Compared with 20 distinct cyclocross/gravel geometries in the XXL-equivalent size cohort from model years 2024–2027 in the Velopedia archive.Parts & serviceability
Find replacement parts
27.2 mm seatpost
Published diameter — verify length and setback
Searches use the archived manufacturer specification, not the components currently installed on a particular bicycle. Confirm the exact model, size and fit before ordering. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases. Commercial relationships do not influence Archive specifications or analysis.
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: 2026 X-LAB GT8 Frameset · Cyclocross/Gravel · Published sizes: XS, S, M, L, XL, XXL
Frame and fork
Inspect the frame and fork →Archived: Frame: XDS Carbon Frame, Toray T-800, UDH Compatible · Fork: XDS Carbon Fork, Toray T-800, 100x12mm Thru-Axle · Carbon
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.