Tarmac SL8 Expert
Specialized
Race
Tarmac SL8 Expert is a carbon race road bike (2025), by Specialized, from the Tarmac lineup. Rider-wise, it fits riders who want a sporty road feel without a full race fit, with a sporty riding position, and is best matched to paved roads. The main strengths in the metrics are strong climbing friendliness for sustained uphill riding, strong speed potential on smoother terrain, and good fit flexibility for dialing in rider position. That said, the main trade-off is a firmer ride feel than comfort-first options. Add this bike to compare on MatchBikes.com and see how it stacks up against similar race models.
6.8
Rating

+5
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Score Summary
Performance
7.4
Value
6.4
Fit
5.8
Performance
Built for speed and efficiency
Speed
8.0
High
Climbing Efficiency
8.3
Climber
Aerodynamics
7.5
Aero-Enhanced
Fit
Dialed-in Fit & Comfort
Riding Position
6.5
Sporty
Fit Flexibility
7.6
Adjustable
Ride Comfort
2.5
Race-Stiff
Value
Value for Money
6.4
Fair Value
Surface Range
Road OnlySpecifications
General
Brand
Specialized
Model
Tarmac SL8 Expert
Year
2025
Price
$6,826
Weight
7.77 kg
Category
Road
Sub Category
Race
Groupset
Rival AXS
Frame
Frame
Tarmac SL8 FACT 10r Carbon, Rider First Engineered™, Win Tunnel Engineered, Clean Routing, Threaded BB, 12x142mm thru-axle, flat-mount disc
Suspension Fork
Tarmac SL8 FACT 10r Carbon, 12x100mm thru-axle, flat-mount disc
Suspension Type
Rigid
Drivetrain
Shift Levers
SRAM Rival eTap AXS
Rear Derailleur
SRAM Rival eTap AXS, 12-speed
Front Derailleur
SRAM Rival eTAP AXS, braze-on
Cassette
SRAM Rival, 12-speed, 10-36t
Crank
SRAM Rival with Power Meter, 48/35T
Bottom Bracket
SRAM DUB BSA 68
Chain
SRAM Rival 12-speed
Wheels
Rims
Front: Roval C38, 21mm internal width carbon rim, Rear: Roval C38, 21mm internal width carbon rim
Tires
Front: S-Works Turbo, folding bead, 700x26mm, Rear: S-Works Turbo, folding bead, 700x26mm
Brakes
Brake Type
Hydraulic Disc
Brake Description
Front: SRAM Rival eTap AXS, hydraulic disc, Rear: SRAM Rival eTap AXS, hydraulic disc
Cockpit
Stem
Tarmac integrated stem, 6-degree
Handlebar
Specialized Expert Shallow Drop, alloy, 125mm drop x 75mm reach
Seat
Saddle
Body Geometry Power Expert
Seatpost
S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset
Geometry
| Measurement | 44cm | 49cm | 52cm | 54cm | 56cm | 58cm | 61cm |
|---|---|---|---|---|---|---|---|
| Stack Reach Ratio | 1.369 mm | 1.371 mm | 1.387 mm | 1.417 mm | 1.43 mm | 1.47 mm | 1.5 mm |
| Bottom Bracket Height | 266 mm | 266 mm | 266 mm | 268 mm | 268 mm | 268 mm | 268 mm |
| Front Center | 572 mm | 574 mm | 577 mm | 579 mm | 592 mm | 606 mm | 613 mm |
| Rake | 47 mm | 47 mm | 47 mm | 44 mm | 44 mm | 44 mm | 44 mm |
| Trail | 71 mm | 63 mm | 58 mm | 58 mm | 55 mm | 55 mm | 52 mm |
| 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 |
| Top Tube Length | 496 mm | 509 mm | 531 mm | 541 mm | 563 mm | 577 mm | 595 mm |
| Seat Tube Angle | 75.5 ° | 75.5 ° | 74 ° | 74 ° | 73.5 ° | 73.5 ° | 73 ° |
| Seat Tube Length | 433 mm | 445 mm | 456 mm | 473 mm | 494 mm | 515 mm | 545 mm |
| Head Tube Angle | 70.5 ° | 71.75 ° | 72.5 ° | 73 ° | 73.5 ° | 73.5 ° | 74 ° |
| Head Tube Length | 99 mm | 109 mm | 120 mm | 137 mm | 157 mm | 184 mm | 204 mm |
| Chainstay Length | 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 |
| Bottom Bracket Drop | 74 mm | 74 mm | 74 mm | 72 mm | 72 mm | 72 mm | 72 mm |
| Standover Height | 723 mm | 735 mm | 746 mm | 768 mm | 786 mm | 808 mm | 834 mm |
| Wheels | 700 | 700 | 700 | 700 | 700 | 700 | 700 |




























































