Specialized S-Works Tarmac SL8 Carbon Road Bike
SRAM RED AXS E1 12-speed shifting, a 10-33t cassette, and a 48/35t power-meter crankset equip Specialized’s S-Works Tarmac SL8 race road bike.
- The SRAM crankset includes a power meter and double chainrings.
- SRAM RED brakes use hydraulic discs at both wheels.
- Roval Rapide CLX III wheels use tubeless carbon rims.
- Turbo TLR Race tires measure 700x28c front and rear.
- Ready to Ride guarantee 100% Built.
- Safe International Doorstep Bike Shipping.
Description
Constructed from top-tier FACT 12r carbon fiber, the Specialized S-Works Tarmac SL8 race road bike delivers an ultralight 6.62 kg build weight in size 56. The aerodynamic chassis pairs Win Tunnel engineered tube profiles with a wireless SRAM RED AXS 12-speed groupset and integrated power meter.
This WorldTour-level build features a SRAM RED AXS E1 drivetrain (48/35T crankset, 10-33T cassette), SRAM RED hydraulic disc brakes, Roval Rapide CLX III carbon wheels (51mm front, 48.5mm rear), S-Works Turbo TLR 700x28c tires, Roval Rapide integrated carbon cockpit, and an S-Works Power Mirror 3D-printed saddle. Colorways include Gloss Premium Fjord Metallic and Gloss Redsky White Impasto, requiring separate pedals.
Key Specifications of the Specialized S-Works Tarmac SL8 Race Road Bike
- FACT 12r carbon frame incorporates Rider First Engineered aerodynamic tubing.
- S-Works FACT 12r carbon fork features flat-mount disc caliper tabs.
- SRAM RED AXS E1 wireless electronic drivetrain includes a crankset power meter.
- SRAM RED hydraulic disc brakes provide high-speed stopping power.
- Roval Rapide CLX III tubeless carbon wheels feature differential aero rim depths.
- S-Works Turbo TLR 700x28c tires offer low rolling resistance.
- Roval Rapide integrated carbon handlebar and stem cockpit is standard.
- Specialized S-Works Power Mirror saddle features 3D-printed polymer padding.
- Size 56 complete bicycle weighs 6.62 kg or 14 pounds 9.5 ounces.
- Chassis features CeramicSpeed SLT bearings in the integrated headset.
Who This Race Road Bike Fits
WorldTour racers, breakaway specialists, and performance-driven cyclists demanding minimum UCI legal weight combined with maximum aerodynamic efficiency will excel on this machine. The race geometry delivers razor-sharp handling in bunch sprints and high-speed descents.
Build Considerations
The chassis features a standard SRAM DUB BSA 68mm threaded bottom bracket, 12x100mm front and 12x142mm rear thru-axles, and Clean Routing internal cable architecture. The S-Works Tarmac SL8 carbon seatpost includes a 15mm offset and secures via an integrated wedge binder.
Before Ordering the Specialized S-Works Tarmac SL8 Race Road Bike
Consult road sizing brackets: 49 cm fits 155 to 163 cm (5’1″ to 5’4″), 52 cm fits 163 to 170 cm (5’4″ to 5’7″), 54 cm fits 170 to 175 cm (5’7″ to 5’9″), 56 cm fits 175 to 180 cm (5’9″ to 5’11”), 58 cm fits 180 to 188 cm (5’11” to 6’2″), and 61 cm fits 188 to 196 cm (6’2″ to 6’5″). Remember to charge the SRAM AXS batteries and obtain suitable clipless road pedals.
Specialized S-Works Tarmac SL8 Specs
| Brand | Specialized |
| Model | S-Works Tarmac SL8 |
| Bike Type | Race Road Bike |
| Frame | S-Works Tarmac SL8 FACT 12r Carbon, Rider First Engineered, Win Tunnel Engineered, Clean Routing, Ceramic Speed SLT Headset Bearings, Threaded BB, 12x142mm thru-axle, flat-mount disc |
| Fork | S-Works FACT 12r Carbon, 12x100mm thru-axle, flat-mount disc |
| Shift Levers | SRAM RED AXS, hydraulic disc |
| Front Derailleur | SRAM RED AXS, braze-on |
| Rear Derailleur | SRAM RED AXS E1 |
| Cassette | SRAM RED XG-1290, 12-speed, 10-33t |
| Chain | SRAM RED 12-speed |
| Crankset | SRAM RED AXS Power Meter 48/35t |
| Bottom Bracket | SRAM DUB BSA 68 |
| Front Brake | SRAM RED AXS, hydraulic disc |
| Rear Brake | SRAM RED E1, hydraulic disc |
| Front Wheel | Roval Rapide CLX III, Tubeless, 21mm internal width carbon rim, 51mm depth, Win Tunnel Engineered, Roval LF18-F hub, 18h, ARRIS MTO-255 Straight Pull Spokes |
| Rear Wheel | Roval Rapide CLX III, Tubeless, 21mm internal width carbon rim, 48.5mm depth, Win Tunnel Engineered, Roval LF19-R hub, 24h, ARRIS MTO-255 Straight Pull Spokes |
| Front Tire | S-Works Turbo TLR Race Tire, 700x28c |
| Rear Tire | S-Works Turbo TLR Race Tire, 700x28c |
| Inner Tubes | Standard 80mm PV |
| Handlebars | Roval Rapide Cockpit, Integrated Bar/Stem |
| Tape | Supacaz Super Sticky Kush |
| Saddle | S-Works Power with Mirror |
| Seatpost | S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset |
| Seat Binder | Tarmac integrated wedge |
| Product ID | 221554 |
| Weight | 6.62 kg / 14 lb 9.5 oz |
| Weight Size | 56 |
| Color | Gloss Premium Fjord Metallic, Gloss Redsky White Impasto |
| Manufacturer Warranty | Frame and fork are covered by a lifetime warranty for the original owner. Other Specialized-branded parts are covered for 2 years. |
Specialized S-Works Tarmac SL8 Included:
- Electronic shifting battery charger (Shimano Dura-Ace Di2 cable or SRAM RED AXS dock).
- Integrated dual-sided / Quarq power meter battery and charging kit.
- Roval Rapide integrated carbon cockpit computer mount kit (Garmin, Wahoo, Bryton inserts).
- S-Works Tarmac SL8 aerodynamic carbon seatpost and textured clamp wedge.
- Modular headset transition spacer kit (standard Rapide cockpit shims and slammed stem cover).
- Roval Rapide CLX II tubeless valve stems and tire sealant.
- Front (12x100mm) and rear (12x142mm) bolt-on thru-axles.
- Hydraulic disc brake pad transport spacers.
- Safety reflector pack and warning bell.
- Bicycle User Manual Book.
- Official Manufacturer Warranty Card.
Specialized S-Works Tarmac SL8 Carbon Road Bike General Questions
Q: What performance racing is the S-Works Tarmac SL8 engineered for?A: The Specialized S-Works Tarmac SL8 Carbon Road Bike is engineered for Grand Tour road racing, mountain summit attacks, and bunch sprints with a 685-gram frame.
A: Maintain tubeless sealant (40–50 ml per tire) every 3 months, clean aerodynamic carbon rim surfaces with mild soap, and check DT Swiss ceramic bearings annually.
A: The elongated Speed Sniffer head tube moves the steer tube back, creating a narrow aerodynamic leading edge that saves 16.6 seconds over 40 km compared to SL7.
A: FACT 12m carbon profiling optimizes structural load paths derived from Aethos research, delivering a 33% higher stiffness-to-weight ratio than any previous Tarmac.
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