T-Lab
T-Lab X3 GRX 600 2X
T-Lab X3 GRX 600 2X
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T-Lab’s flagship gravel bike is back for 2025, setting new standards with regards to all-road capability. Hailed by GravelCyclist.com as "the best overall riding titanium bike," the X3 delivers unmatched multi-surface performance and comfort, given an enhanced maximum tire clearance of 700x50c. Featuring UDH compatibility and now available with the option of going fully internal for your cable routing. Exceptionally responsive and smooth. Remarkably agile and bikepacking worthy. You’re looking at the titanium gravel bike par excellence for those who refuse to compromise.
Specs:
- Average Frame Weight: 1375g (S)
- Headtube: Semi-internal - ZS44 Top and IS52 bottom; Fully Internal - IS52 Top and bottom
- Seatpost: 27.2mm (31.8mm seat clamp)
- Front Derailleur: “Clamp-on” type
- Bottom Bracket: BB-386
- Dropouts: 142x12mm axle flat mount with disc brake
- Fork: is a tapered from 1-1/2" at the crown to 1-1/8" for the steerer, 395mm Axle to crown, 50mm
- Wheel Size: 700c or 650B
- Maximum Tire Width: 700x50c (tire width may vary depending on manufacturer and tire pressure)
- Available in Gravel/Adventure geometry in the following standard sizes: XS, S, M, L, XL
- Custom geometry/sizing also available ($600 CAD upcharge)
- Frame compatible with Shimano, SRAM and Campagnolo groupsets featuring disc brakes
- Lifetime warranty (with regards to manufacturer’s defects)
Build Kit:
*Based on availability from our suppliers, some equivalent substitutions may occur.
Geometry:
| Frame Size | Unit | XXS | XS | S | M | L | XL |
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| Average Cyclist Height | (equiv.) ft-in | (50): 5’ to 5’-4” | (52): 5’-4” to 5’-6” | (54): 5’-6” to 5’-8” | (56): 5’-10” to 6’-0” | (58): 6’-2” to 6’-4” | (60): 6’-4” to 6’-6” |
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| Seat Tube Angle | deg | 74 | 73.5 | 73.5 | 73.5 | 73.5 | 73.5 |
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| Top Tube Length (horizontal) | mm | 505 | 519 | 536 | 554 | 578 | 598 |
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| Head Tube Length* | mm | 100 | 120 | 140 | 160 | 180 | 200 |
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| Frame Reach | mm | 356 | 366 | 377 | 389 | 407 | 422 |
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| Fork Rake | mm | 50 | 50 | 50 | 50 | 50 | 50 |
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| Trail | mm | 74 | 71 | 67 | 67 | 67 | 67 |
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| Wheelbase | mm | 996 | 1009 | 1024 | 1040 | 1065 | 1085 |
*Frameset only
