Specialized

2026 Specialized Tarmac SL8 Comp

Previous used estimate

$3,995 - $4,110

Actual value depends on condition, size, and local demand.

2026 Specialized Tarmac SL8 Comp

Value Guide market data · 2026 Specialized Tarmac SL8 Comp

12-month projected trend

6%

Direction and magnitude, not judgment

vs. category average

20%

Drops faster than category avg

Price over time - 2026 Specialized Tarmac SL8 Comp

$4.5k$2.5k$531MSRPMSRPYr 1Yr 2Yr 3Yr 4Yr 5Yr 6Yr 7Yr 7Yr 8Yr 9Yr 10Yr 11Yr 12Yr 13Yr 14Yr 14Yr 15Yr 16Yr 17Yr 18Yr 19Yr 20Yr 20

Values based on actual sales data. Enter your bike's specifics to get a precise valuation.

All Tarmac model years

Compare Tarmac SL8 Comp models

2 models

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Overview

About this bike

Nothing is faster than the Tarmac SL8 thanks to a combination of aerodynamics, lightweight, and ride quality previously thought impossible. After eight generations and over two decades of development, it’s more than the fastest Tarmac ever - it’s the world’s fastest race bike. Your legs up for it? Aerodynamics or lightweight alone don’t win races - speed is what matters. Delivering that speed requires creating an uncompromising combination of aerodynamics, lightweight, stiffness, and compliance. Through race simulations using real world data our Ride Science team knows the Tarmac SL8 is the fastest race bike ever made on the routes that matter - 16.6 seconds faster over 40km, 128 seconds faster over Milan San Remo, 20 seconds faster over the legendary Tourmalet climb. - AERO IN EVERYTHING: We’re putting aero where it matters - the leading edge - not just where it looks good. In the process we’ve created our most aerodynamic road bike ever. Yes, it’s more aero than the Venge. Clean air is optimized for maximum advantage with the Tarmac’s new nose cone - the Speed Sniffer. By moving the steer tube back - the tube that determines head tube width - the leading edge of the head tube can be much sharper, delivering a much lower drag shape. Utilizing new UCI rules, the Tarmac SL8 has the narrowest, most aero seat post we’ve ever made ensuring fast moving, dirty air around the legs can flow back more cleanly. Doesn’t victory smell sweet? - MINIMUM WEIGHT, MAXIMUM AERO: Tarmac SL8 took learnings from Aethos to be easily built at the UCI minimum with a full aero set up. The team delivered a mind bending, scale tickling 685 gram frame - 15% lighter than the Tarmac SL7 and lighter than anything on else on the World Tour*. With the ability to make lightweight a top priority in the down tube, seat tube, and rear of the bike lessons from Aethos were applied. The frame’s shape carries load so efficiently that extra carbon stiffness layers become redundant. *Unless of course you count the time Kasper Asgreen raced our 585 gram Aethos frame during a Tour stage. - GOES LIKE HELL, RIDES LIKE HEAVEN: With massive gains in stiffness-to-weight - an improvement of 33% over the SL7 - the Tarmac SL8 takes legendary handling, aggressive responsiveness and World Championship proven geometry to the next level. The bike is stiffer at the pedals, more precise at the bars, and combines it with a compliant ride in the saddle that sets a new benchmark for race bike comfort. Thanks to our Rider-First Engineering, every rider, regardless of size, gets the same unprecedented ride quality and handling. In the saddle the Tarmac SL8 delivers 6% more compliance, floating over rough road with a supple feel unique in the high strung world of race bikes. Tarmac’s proven geometry and 32mm tire clearance are identical to the SL7, ensuring easy adaptation and the versatility to run higher volume tires when needed. - BEYOND GENDER: There can be more difference between two male cyclists than between a male and female. Gender alone doesn’t provide nearly enough data to specialize and that means creating male or female bikes is arbitrary and outdated. Every rider can get the next level advantage of Tarmac SL8. It’s time to go Beyond Gender. - The Tarmac SL8 Comp Di2 delivers exceptional performance with a full 105 Di2 groupset, DT R470 tubeless ready wheelset, and an SL7 stem with Specialized Shallow Drop alloy handlebars makes for an accessible performance-packed bike.

Specifications

Subtype
Performance
Category
Road
Component Fork
FACT 10r Carbon, 12x100mm thru-axle, flat-mount disc
Component Size
44cm, 49cm, 52cm, 54cm, 56cm, 58cm, 61cm
Component Stem
Tarmac integrated stem, 6-degree
Product Family
Tarmac
Component Chain
Shimano SLX, M7100, 12-speed
Component Color
Gloss Red Tint Over Silver Dust/Silver Dust, Satin Carbon/White
Component Frame
Tarmac SL8 FACT 10r Carbon, Rider First Engineered™, Win Tunnel Engineered, Clean Routing, Threaded BB, 12x142mm thru-axle, flat-mount disc
Component Brakes
Shimano 105 Hydraulic Brake
Component Pedals
Sold Separately
Component Saddle
Body Geometry Power Sport, steel rails
Component Headset
Stem headset spacers kit for SL7 stem & Roval Rapide cockpit use
Component Crankset
Shimano 105, 12-speed
Component Seatpost
S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset
Component Shifters
Shimano 105 Di2 R7170, 12-speed
Component Handlebar
Specialized Shallow Drop, 6061, 70x125mm, 31.8mm clamp
Component Rear Tire
S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm
Component Wheel Set
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.
Component Front Tire
S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm
Component Tape Grips
Supacaz Super Sticky Kush
Component Wheel Size
700c
Component Bottom Bracket
Shimano Threaded BSA BB
Component Rear Derailleur
Shimano 105 Di2 7150
Component Front Derailleur
Shimano 105 R7170, braze-on
Component Cassette Freewheel
Shimano 105, 12-speed, 11-34t
Crankset
Shimano 105, 12-speed
Pedals
Sold Separately
Bottom Bracket
Shimano Threaded BSA BB
Chain
Shimano SLX, M7100, 12-speed
Seatpost
S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset
Saddle
Body Geometry Power Sport, steel rails
Handlebar
Specialized Shallow Drop, 6061, 70x125mm, 31.8mm clamp
Headset
Stem headset spacers kit for SL7 stem & Roval Rapide cockpit use
Front Derailleur
Shimano 105 R7170, braze-on
Rear Derailleur
Shimano 105 Di2 7150
Rear Tire
S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm
Stem
Tarmac integrated stem, 6-degree
Brakes
Shimano 105 Hydraulic Brake
Fork
FACT 10r Carbon, 12x100mm thru-axle, flat-mount disc
Frame
Tarmac SL8 FACT 10r Carbon, Rider First Engineered™, Win Tunnel Engineered, Clean Routing, Threaded BB, 12x142mm thru-axle, flat-mount disc
Shifters
Shimano 105 Di2 R7170, 12-speed
Tape/Grips
Supacaz Super Sticky Kush
Color
Satin Carbon/White
Size
61cm
Wheel Size
700c
Cassette/Freewheel
Shimano 105, 12-speed, 11-34t
Wheel Set
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 Tire
S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm

What to check when buying used

Inspection

Frame condition

Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.

Inspection

Drivetrain wear

Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.

Inspection

Service history

Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.

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