Models · Specialized · Tarmac
Specialized Tarmac SL8 (2026)
Good to know: Integrated cockpit
Integrated cockpit (a one-piece bar and stem) on at least one build. Changing the length means replacing the whole cockpit, and not every length exists. Check which length the bike actually ships with before you buy.
Geometry ?
Specialized Tarmac SL8 2026 geometry in sizes 44–61: stack 501–612 mm, reach 366–408 mm, head angle 70.5–74°.
| 44 | 49 | 52 | 54 | 56 | 58 | 61 | |
|---|---|---|---|---|---|---|---|
| Stack | 501 mm | 514 mm | 527 mm | 544 mm | 565 mm | 591 mm | 612 mm |
| Reach | 366 mm | 375 mm | 380 mm | 384 mm | 395 mm | 402 mm | 408 mm |
| Head angle | 70.5° | 71.8° | 72.5° | 73° | 73.5° | 73.5° | 74° |
| Seat angle | 75.5° | 75.5° | 74° | 74° | 73.5° | 73.5° | 73° |
| Seat tube (c-t) | 433 mm | 445 mm | 456 mm | 473 mm | 494 mm | 515 mm | 545 mm |
| Head tube | 99 mm | 109 mm | 120 mm | 137 mm | 157 mm | 184 mm | 204 mm |
| Top tube (effective) | 496 mm | 509 mm | 531 mm | 541 mm | 563 mm | 577 mm | 595 mm |
| BB drop | 74 mm | 74 mm | 74 mm | 72 mm | 72 mm | 72 mm | 72 mm |
| Chainstay | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm |
| Wheelbase | 970 mm | 973 mm | 975 mm | 978 mm | 991 mm | 1006 mm | 1013 mm |
| Standover | 723 mm | 735 mm | 746 mm | 768 mm | 786 mm | 808 mm | 834 mm |
| Fork length | 370 mm | 370 mm | 370 mm | 370 mm | 370 mm | 370 mm | 370 mm |
| Fork offset | 47 mm | 47 mm | 47 mm | 44 mm | 44 mm | 44 mm | 44 mm |
| Stock build by size | |||||||
| Cranks | 165 mm | 165 mm | 170 mm | 172.5 mm | 172.5 mm | 175 mm | 175 mm |
| Stem Tarmac SL8 Pro (Shimano Ultegra Di2) | 75 mm | 75 mm | 90 mm | 100 mm | 100 mm | 110 mm | 110 mm |
| Stem Tarmac SL8 Expert (Shimano Ultegra Di2) | 70 mm | 80 mm | 90 mm | 100 mm | 100 mm | 110 mm | 110 mm |
| Bar width Tarmac SL8 Pro (Shimano Ultegra Di2) | 380 mm | 380 mm | 400 mm | 400 mm | 420 mm | 420 mm | 440 mm |
| Bar width Tarmac SL8 Expert (Shimano Ultegra Di2) | 360 mm | 380 mm | 400 mm | 420 mm | 420 mm | 440 mm | 440 mm |
| Seatpost setback | 15 mm | 15 mm | 15 mm | 15 mm | 15 mm | 15 mm | 15 mm |
Source: specialized.com, checked 1 Nov 2026 · bar position: worked out from published data
Older model years in the archive with the same stack, reach and head angle: 2018–2025. Source: specialized.com
Older model years in the archive: Specialized Tarmac Expert 2015
Stock build
Tarmac SL8 Pro (Shimano Ultegra Di2)
- Groupset
- Shimano Ultegra Di2 R8170, hydraulic disc
- Cranks
- Shimano Ultegra R8100 with 4iiii Precision 3+ Power Meter, 52/36t
- Handlebar
- Roval Rapide Cockpit, Integrated Bar/Stem
- Seatpost
- S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15 mm offset
- Saddle
- Power Pro Mirror, Hollow Ti rails
Tarmac SL8 Expert (Shimano Ultegra Di2)
- Groupset
- Shimano Ultegra Di2 R8170, hydraulic disc
- Cranks
- Shimano Ultegra R8100, 52/36t
- Stem
- Tarmac integrated stem, 6°
- Handlebar
- Specialized Expert Shallow Drop, alloy, 125 mm drop, 75 mm reach
- Seatpost
- S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15 mm offset
- Saddle
- Body Geometry Power Expert
Tarmac SL8 Comp (Shimano 105 Di2)
- Groupset
- Shimano 105 Di2 R7170, 12-speed hydraulic disc
- Cranks
- Shimano 105 R7100, 52/36t
- Stem
- Tarmac integrated stem, 6°
- Handlebar
- Specialized Shallow Drop, 6061, 70×125 mm, 31.8 mm clamp
- Seatpost
- S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15 mm offset
- Saddle
- Body Geometry Power Sport, steel rails
Source for all builds: specialized.com, checked 1 Nov 2026
Frames with similar geometry
Stack and reach within 12 mm of size 44 (stack 501 / reach 366 mm).
Stack and reach within 12 mm of size 49 (stack 514 / reach 375 mm).
Stack and reach within 12 mm of size 52 (stack 527 / reach 380 mm).
Stack and reach within 12 mm of size 54 (stack 544 / reach 384 mm).
Stack and reach within 12 mm of size 56 (stack 565 / reach 395 mm).
Stack and reach within 12 mm of size 58 (stack 591 / reach 402 mm).
Stack and reach within 12 mm of size 61 (stack 612 / reach 408 mm).
Spotted a mistake or a missing build? Let me know.