Seatpost wedge / binder
Carbon paste per manual; do not grease carbon seat tube.
6.2 Nm
54.9 in·lb
4 mm hex
Specialized · Road · 7 sizes
$5,600
Kit weight not published
https://www.specialized.com/us/en/tarmac-sl8-expert/p/216955
Kit weight and list price per size. Gaps stay blank.
Best in-stock in CAD. Affiliate links may earn a commission.
| Retailer | Price | Stock | Link |
|---|---|---|---|
| Survey list (CAD) | $5,599.99$6,999.99 | In stock | Buy |
Tap + Compare under each size to queue several of this bike.
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 |
| Stack / Reach | 1.37 | 1.37 | 1.39 | 1.42 | 1.43 | 1.47 | 1.50 |
| Head tube angle | 70.5° | 71.8° | 72.5° | 73° | 73.5° | 73.5° | 74° |
| Seat tube angle (effective) | 75.5° | 75.5° | 74° | 74° | 73.5° | 73.5° | 73° |
| Seat tube angle (actual) | — | — | — | — | — | — | — |
| Top tube (effective) | 496 mm | 509 mm | 531 mm | 541 mm | 563 mm | 577 mm | 595 mm |
| Head tube length | 99 mm | 109 mm | 120 mm | 137 mm | 157 mm | 184 mm | 204 mm |
| Seat tube length | 433 mm | 445 mm | 456 mm | 473 mm | 494 mm | 515 mm | 545 mm |
| Bottom bracket drop | 74 mm | 74 mm | 74 mm | 72 mm | 72 mm | 72 mm | 72 mm |
| Bottom bracket height | 266 mm | 266 mm | 266 mm | 268 mm | 268 mm | 268 mm | 268 mm |
| Chainstay | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm |
| Front center | 572 mm | 574 mm | 577 mm | 579 mm | 592 mm | 606 mm | 613 mm |
| Wheelbase | 970 mm | 973 mm | 975 mm | 978 mm | 991 mm | 1006 mm | 1013 mm |
| Fork rake (offset) | 47 mm | 47 mm | 47 mm | 44 mm | 44 mm | 44 mm | 44 mm |
| Fork axle to crown | 370 mm | 370 mm | 370 mm | 370 mm | 370 mm | 370 mm | 370 mm |
| Trail | 71 mm | 63 mm | 58 mm | 58 mm | 55 mm | 55 mm | 52 mm |
| Standover | 723 mm | 735 mm | 746 mm | 768 mm | 786 mm | 808 mm | 834 mm |
| Pad / effective stack | 509 mm | 522 mm | 535 mm | 552 mm | 573 mm | 599 mm | 620 mm |
| Pad / effective reach | 363 mm | 372 mm | 377 mm | 381 mm | 393 mm | 400 mm | 406 mm |
Specialized · seat-wedge frames — Typical values from Specialized road user manuals (e.g. Roubaix / Aethos / Tarmac). Printed wedge / axle markings win when present.
Seatpost wedge / binder
Carbon paste per manual; do not grease carbon seat tube.
6.2 Nm
54.9 in·lb
4 mm hex
Front thru-axle
15 Nm
132.8 in·lb
6 mm hex
Rear thru-axle
15 Nm
132.8 in·lb
6 mm hex
Bottle cage
2.8 Nm
24.8 in·lb
3 mm hex
Derailleur hanger
4.5 Nm
39.8 in·lb
4 mm hex
| 61 |
| 408 |
| 612 |
| — |
| $5,600 |
Stem @ steerer (Future Stem / common)
Confirm printed stem / bar specs when they disagree.
5 Nm
44.3 in·lb
4 mm hex
https://media.specialized.com/support/collateral/0000134021.pdfcaptured 2026-07-24. Printed part specs always win.