2025
2025 Specialized Tarmac SL8
The 2025 Specialized Tarmac SL8 sits more aggressive than most road bikes, with a longer rear center. Reach 366 to 408 mm, stack 501 to 612 mm.
Source: specialized.com. Checked .
Key facts
- Brand
- Specialized
- Model
- Tarmac SL8
- Model year
- 2025
- Type
- Road
- Geometry labels
- 44, 49, 52, 54, 56, 58, and 61
- Geometry
- Complete for every size
- Source
- specialized.com
- Checked
Things to know
Compared with other road bikes on frame geometry alone.
- Steeper seat angle than 9 in 10 road bikes: 74.5 degrees, where most sit near 73.5.
Geometry by size
| Measurement | 44 | 49 | 52 | 54 | 56 | 58 | 61 |
|---|---|---|---|---|---|---|---|
| Reach(mm) | 366 (from the manufacturer) | 375 (from the manufacturer) | 380 (from the manufacturer) | 384 (from the manufacturer) | 395 (from the manufacturer) | 402 (from the manufacturer) | 408 (from the manufacturer) |
| Stack(mm) | 501 (from the manufacturer) | 514 (from the manufacturer) | 527 (from the manufacturer) | 544 (from the manufacturer) | 565 (from the manufacturer) | 591 (from the manufacturer) | 612 (from the manufacturer) |
| Head tube angle(°) | 70.5 | 71.75 | 72.5 | 73 | 73.5 | 73.5 | 74 (from the manufacturer) |
| Seat tube angle(°) | 75.5 | 75.5 | 74 (from the manufacturer) | 74 (from the manufacturer) | 73.5 | 73.5 | 73 (from the manufacturer) |
| Effective top tube(mm) | 496 | 509 | 531 | 541 | 563 | 577 | 595 |
| Chainstay length(mm) | 410 | 410 | 410 | 410 | 410 | 410 | 410 |
| Wheelbase(mm) | 970 | 973 | 975 | 978 | 991 | 1006 | 1013 |
| BB drop(mm) | 74 | 74 | 74 (from the manufacturer) | 72 | 72 | 72 | 72 |
| BB height(mm) | 266 | 266 | 266 | 268 | 268 | 268 | 268 |
| Standover(mm) | 723 | 735 | 746 | 768 | 786 | 808 | 834 |
| Seat tube length(mm) | 433 | 445 | 456 | 473 | 494 | 515 | 545 |
| Fork length(mm) | 370 | 370 | 370 | 370 | 370 | 370 | 370 |
| Head tube length(mm) | 99 (from the manufacturer) | 109 (from the manufacturer) | 120 (from the manufacturer) | 137 (from the manufacturer) | 157 (from the manufacturer) | 184 (from the manufacturer) | 204 (from the manufacturer) |
✓Sources agreeMManufacturer
Stock build
The stock build is under review.
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Quick answers
- Which size or configuration labels have geometry for the 2025 Specialized Tarmac SL8?
- Geometry is listed for 44, 49, 52, 54, 56, 58, and 61.
- What are the reach and stack of the 2025 Specialized Tarmac SL8 in size 54?
- In size 54, reach is 384 mm and stack is 544 mm.
- What is the head tube angle of the 2025 Specialized Tarmac SL8?
- The head tube angle is 73 degrees in size 54.
- Which years of the Specialized Tarmac SL8 are on Quiver?
- Quiver has the Specialized Tarmac SL8 for 2025, 2026, and 2024.
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