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2026 Specialized Tarmac SL8 Comp - Shimano 105 Di2

Original specifications: 7.68 kg (16 lb, 14.9 oz) published weight · geometry for 7 published sizes.

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At a glance

Model year
2026
Category
Road
Original MSRP
$4,699.99
Sizes
44, 49, 52, 54, 56, 58, 61
Colors
Gloss Red Tint Over Silver Dust / Silver Dust, Satin Carbon / White
Weight
7.68 kg (16 lb, 14.9 oz)
Geometry
7 manufacturer sizes
In this record
20 specifications · 8 archived images · original MSRP · geometry
Archive ID
900001144
Original buildCarbon Fiber

Manufacturer catalog

Published sizes and colors

7 sizes · 2 colors

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

44495254565861

Published colors

Gloss Red Tint Over Silver Dust / Silver DustSatin Carbon / White

Frameset

Frame ConstructionTarmac SL8 FACT 10r Carbon, Rider First Engineered™, Win Tunnel Engineered, Clean Routing, Threaded BB, 12x142mm thru-axle, flat-mount disc
Frame MaterialCarbon Fiber
ForkFACT 10r Carbon, 12x100mm thru-axle, flat-mount disc
Fork MaterialCarbon Fiber

Drivetrain

ShiftersShimano 105 Di2 R7170, 12-speed hydraulic disc
Front DerailleurShimano 105 R7170, braze-on
Rear DerailleurShimano 105 Di2 R7150. 12-speed
CranksetShimano 105 R7100, 52/36t
Bottom BracketShimano Threaded BSA BB
CassetteShimano 105 CS-R7100, 12-speed, 11-34t
ChainShimano SLX CN-M7100, 12-speed

Brakes

Brakes(F) Shimano 105 Hydraulic Brake / (R) Shimano 105 Hydraulic Brake

Cockpit & Contact Points

HeadsetStem headset spacers kit for SL7 stem & Roval Rapide cockpit use
HandlebarSpecialized Shallow Drop, 6061, 70x125mm, 31.8mm clamp
StemTarmac integrated stem, 6-degree
SaddleBody Geometry Power Sport, steel rails
SeatpostS-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset

Wheels & Tires

Wheels(F) DT Swiss R470 rim, 20mm internal width, tubeless ready, 24h, Specialized full sealed bearing thru axle hub, centerlock disc, DT Swiss Champion 14G stainless steel spokes, DT Swiss brass nipples. / (R) DT Swiss R470 rim, 20mm internal width, tubeless ready, 24h, Specialized full sealed bearing thru axle hub, centerlock disc, DT Swiss Champion 14G stainless steel spokes, DT Swiss brass nipples.
Front TireS-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm
Rear TireS-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm

Geometry

7 sizes · 19 measurements

Frame measurements by size.

All geometry measurements7 sizes · 19 measurements
Measurement44495254565861
Seat tube433 mm445 mm456 mm473 mm494 mm515 mm545 mm
Effective top tube496 mm509 mm531 mm541 mm563 mm577 mm595 mm
Head tube99 mm109 mm120 mm137 mm157 mm184 mm204 mm
Head-tube angle70.5°71.75°72.5°73°73.5°73.5°74°
Seat-tube angle75.5°75.5°74°74°73.5°73.5°73°
Chainstay / rear center410 mm410 mm410 mm410 mm410 mm410 mm410 mm
Wheelbase970 mm973 mm975 mm978 mm991 mm1006 mm1013 mm
Bottom-bracket drop74 mm74 mm74 mm72 mm72 mm72 mm72 mm
Bottom-bracket height266 mm266 mm266 mm268 mm268 mm268 mm268 mm
Reach366 mm375 mm380 mm384 mm395 mm402 mm408 mm
Stack501 mm514 mm527 mm544 mm565 mm591 mm612 mm
Standover height723 mm735 mm746 mm768 mm786 mm808 mm834 mm
Fork offset / rake47 mm47 mm47 mm44 mm44 mm44 mm44 mm
Front center572 mm574 mm577 mm579 mm592 mm606 mm613 mm
Trail71 mm63 mm58 mm58 mm55 mm55 mm52 mm
Fork length / axle-to-crown370 mm370 mm370 mm370 mm370 mm370 mm370 mm
Crank length165 mm165 mm170 mm172.5 mm172.5 mm175 mm175 mm
Stem length70 mm80 mm90 mm100 mm100 mm110 mm110 mm
Handlebar width360 mm380 mm400 mm420 mm420 mm440 mm440 mm

Measurements may vary by configuration, wheel size, or frame setting where noted in the published chart.

Gearing

Chainring ÷ rear sprocket

Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.

All published sizes52/36T · 11–34T · 12-speed
Lowest1.06:1 Highest4.73:1 Total range446%
Campaign

Parts & serviceability

Find replacement parts

Original specifications
Chain · Original
Shimano SLX CN-M7100, 12-speed Search: Shimano CN-M7100 chain
Retailer offers · Affiliate links
Cassette · Original
Shimano 105 CS-R7100, 12-speed, 11-34t Search: Shimano CS-R7100 12-speed 11-34 cassette
Retailer offers · Affiliate links
Bottom bracket · Original
Shimano Threaded BSA BB
Retailer offers · Affiliate links
More parts (6)
Crankset · Original
Shimano 105 R7100, 52/36t
Retailer offers · Affiliate links
Front derailleur · Original
Shimano 105 R7170, braze-on Search: Shimano 105 12-speed Di2 front derailleur
Retailer offers · Affiliate links
Rear derailleur · Original
Shimano 105 Di2 R7150. 12-speed Search: Shimano 105 12-speed Di2 rear derailleur
Retailer offers · Affiliate links
Shifters · Original
Shimano 105 Di2 R7170, 12-speed hydraulic disc Search: Shimano 105 12-speed Di2 shifter
Handlebar · Original
Specialized Shallow Drop, 6061, 70x125mm, 31.8mm clamp
Headset · Original
Stem headset spacers kit for SL7 stem & Roval Rapide cockpit use

Based on the original build. Confirm the model, size and fit before ordering; installed parts may differ. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases.

Bike-specific inspection checklist 19 checks based on 5 archived component groups Open checklistClose checklist
0 of 19 checked Progress stays in this browser for this bike.

This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.

Archived: 2026 Specialized Tarmac SL8 Comp - Shimano 105 Di2 · Road · Published sizes: 44, 49, 52, 54, 56, 58, 61

Archived: Frame: Tarmac SL8 FACT 10r Carbon, Rider First Engineered™, Win Tunnel Engineered, Clean Routing, Threaded BB, 12x142mm thru-axle, flat-mount disc · Fork: FACT 10r Carbon, 12x100mm thru-axle, flat-mount disc · Carbon Fiber

Archived: Shifters: Shimano 105 Di2 R7170, 12-speed hydraulic disc · Front derailleur: Shimano 105 R7170, braze-on · Rear derailleur: Shimano 105 Di2 R7150. 12-speed · Crankset: Shimano 105 R7100, 52/36t · Bottom bracket: Shimano Threaded BSA BB · Cassette: Shimano 105 CS-R7100, 12-speed, 11-34t · Chain: Shimano SLX CN-M7100, 12-speed

Archived: Brakes: (F) Shimano 105 Hydraulic Brake / (R) Shimano 105 Hydraulic Brake

Archived: Front tire: S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm · Rear tire: S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm

Controls and contact points

Archived: Headset: Stem headset spacers kit for SL7 stem & Roval Rapide cockpit use · Handlebar: Specialized Shallow Drop, 6061, 70x125mm, 31.8mm clamp · Stem: Tarmac integrated stem, 6-degree · Seatpost: S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset · Saddle: Body Geometry Power Sport, steel rails

Before and during the test ride

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Gallery8 images

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Campaign

Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

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