Models · Specialized · Roubaix
Specialized Roubaix SL8 (2026)
Good to know: Future Shock
Future Shock (travel 20 mm) is already part of the published stack, so I sit the stem directly on it, with no more than 30 mm of cover and spacers underneath. This is an estimate: once the unit sags under your weight, the bars end up a few millimetres lower.
Geometry ?
Specialized Roubaix SL8 2026 geometry in sizes 44–64: stack 543–685 mm, reach 353–409 mm, head angle 69.3–73.5°.
| 44 | 49 | 52 | 54 | 56 | 58 | 61 | 64 | |
|---|---|---|---|---|---|---|---|---|
| Stack | 543 mm | 549 mm | 566 mm | 585 mm | 605 mm | 630 mm | 665 mm | 685 mm |
| Reach | 353 mm | 363 mm | 370 mm | 381 mm | 389 mm | 397 mm | 403 mm | 409 mm |
| Head angle | 69.3° | 70.8° | 71.5° | 72.3° | 73° | 73° | 73.5° | 73.5° |
| Seat angle | 75° | 74° | 74° | 74° | 73.5° | 73.5° | 73.5° | 73° |
| Seat tube (c-t) | 365 mm | 410 mm | 446 mm | 465 mm | 485 mm | 505 mm | 545 mm | 581 mm |
| Head tube | 90 mm | 90 mm | 105 mm | 122 mm | 140 mm | 168 mm | 202 mm | 222 mm |
| Top tube (effective) | 503 mm | 523 mm | 534 mm | 550 mm | 569 mm | 584 mm | 600 mm | 618 mm |
| BB drop | 80 mm | 80 mm | 80 mm | 78 mm | 78 mm | 78 mm | 78 mm | 78 mm |
| Chainstay | 418 mm | 418 mm | 418 mm | 420 mm | 420 mm | 423 mm | 423 mm | 423 mm |
| Wheelbase | 994 mm | 992 mm | 998 mm | 1005 mm | 1012 mm | 1031 mm | 1042 mm | 1054 mm |
| Standover | 686 mm | 719 mm | 747 mm | 766 mm | 787 mm | 809 mm | 847 mm | 865 mm |
| Fork length | 375 mm | 375 mm | 375 mm | 375 mm | 375 mm | 375 mm | 375 mm | 375 mm |
| Fork offset | 52 mm | 52 mm | 52 mm | 47 mm | 47 mm | 47 mm | 47 mm | 47 mm |
| Stock build by size | ||||||||
| Cranks Roubaix SL8 Comp (SRAM Rival AXS) | 165 mm | 165 mm | 170 mm | 172.5 mm | 172.5 mm | 175 mm | 175 mm | 175 mm |
| Cranks S-Works Roubaix SL8 (Dura-Ace Di2) | 165 mm | 165 mm | 170 mm | 172.5 mm | 172.5 mm | 175 mm | 175 mm | – |
| Stem Roubaix SL8 Comp (SRAM Rival AXS) | 70 mm | 80 mm | 90 mm | 100 mm | 100 mm | 110 mm | 110 mm | 120 mm |
| Stem S-Works Roubaix SL8 (Dura-Ace Di2) | 70 mm | 80 mm | 90 mm | 100 mm | 100 mm | 110 mm | 110 mm | – |
| Bar width Roubaix SL8 Comp (SRAM Rival AXS) | 360 mm | 380 mm | 400 mm | 420 mm | 420 mm | 440 mm | 440 mm | 440 mm |
| Bar width S-Works Roubaix SL8 (Dura-Ace Di2) | 360 mm | 380 mm | 400 mm | 420 mm | 420 mm | 440 mm | 440 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: 2024–2025. Source: specialized.com
Older model years in the archive: Specialized Roubaix SL4 Elite 2012–2017
Stock build
Roubaix SL8 Comp (SRAM Rival AXS)
- Groupset
- SRAM Rival AXS E1
- Cranks
- SRAM Rival E1 46/33T
- Stem
- Future Stem, Comp
- Handlebar
- Specialized Hover Comp, Alloy, 125 mm Drop, 75 mm Reach w/Di2 Hole
- Seatpost
- S-Works Pave
- Saddle
- Body Geometry Power Comp, chrome alloy rails
Roubaix SL8 Expert (Shimano Ultegra Di2)
- Groupset
- Shimano Ultegra Di2 R8170, hydraulic disc
- Cranks
- Shimano Ultegra R8100, 50/34t
- Stem
- Future Stem, Pro
- Handlebar
- Specialized Hover Expert, Alloy, 125 mm Drop, 75 mm Reach w/Di2 Hole
- Seatpost
- S-Works Pave
- Saddle
- Body Geometry Power Expert
S-Works Roubaix SL8 (Dura-Ace Di2)
- Groupset
- Shimano Dura-Ace R9270, hydraulic disc
- Cranks
- Shimano Dura-Ace R9200, 4iiii Precision Pro power meter
- Stem
- S-Works Future Stem, w/ Integrated Computer Mount
- Handlebar
- S-Works Carbon Hover Drop 125 mm, Reach 75 mm, w/Di2 hole
- Seatpost
- S-Works Pave Seat post
- Saddle
- S-Works Power with Mirror
Roubaix SL8 Pro (SRAM Force AXS)
- Groupset
- SRAM Force AXS E1 HRD
- Cranks
- SRAM Force E1 Power Meter, 46/33t
- Stem
- Specialized Pro SL, alloy
- Handlebar
- Roval Alpinist Carbon Handlebar, 125 mm drop, 75 mm reach
- Seatpost
- S-Works Pave
- Saddle
- Body Geometry Power Pro Mirror, Hollow Ti Rails
Roubaix SL8 Sport (Shimano 105)
- Groupset
- Shimano 105 R7120, hydraulic disc
- Cranks
- Shimano 105, 12-speed 50/34t
- Stem
- Future Stem, Comp
- Handlebar
- Specialized Hover Comp, Alloy, 125 mm Drop, 75 mm Reach w/Di2 Hole
- Seatpost
- S-Works Pave
- Saddle
- Body Geometry Power Sport, steel rails
Roubaix SL8 (Shimano Tiagra)
- Groupset
- Shimano Tiagra R4000, hydraulic disc
- Cranks
- Shimano Tiagra FC-R4000, 50/34t
- Stem
- Future Stem, Comp
- Handlebar
- Specialized Hover Comp, Alloy, 125 mm Drop, 75 mm Reach w/Di2 Hole
- Seatpost
- S-Works Pave
- 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 543 / reach 353 mm).
Stack and reach within 12 mm of size 49 (stack 549 / reach 363 mm).
Stack and reach within 12 mm of size 52 (stack 566 / reach 370 mm).
Stack and reach within 12 mm of size 54 (stack 585 / reach 381 mm).
Stack and reach within 12 mm of size 56 (stack 605 / reach 389 mm).
Stack and reach within 12 mm of size 58 (stack 630 / reach 397 mm).
Stack and reach within 12 mm of size 61 (stack 665 / reach 403 mm).
Stack and reach within 12 mm of size 64 (stack 685 / reach 409 mm).
Spotted a mistake or a missing build? Let me know.
Are you the manufacturer, or do you sell this bike? I’m missing 10 values for this model’s stem and bars. Add them