What Is S-Works, and Is It Worth It Over Pro or Expert?

S-Works is Specialized’s top tier of bikes and gear. The badge belongs to Specialized; there is no separate S-Works company. An S-Works bike usually gets the top carbon grade for its model, the top groupset and Roval’s top wheels. The exceptions matter: the Stumpjumper 15 EVO S-Works uses the same FACT 11m carbon as its Pro, Expert and Comp, and the S-Works Demo 11 downhill bike rolls on Roval alloy wheels. Above the regular S-Works builds, Specialized sells numbered S-Works LTD editions. The tables below compare the tiers on four current bikes, using Specialized’s own spec pages checked on October 14, 2026.

What does S-Works mean?

Specialized launched S-Works in 1992 to give its sponsored racers an equipment edge, and named it after the factory “works” motorcycles of motocross. Mike Sinyard founded Specialized in 1974, and the company’s first Tarmac, in 2003, was the S-Works Tarmac E5. Today the S-Works badge sits on complete bikes and framesets, road and mountain shoes (S-Works Ares 2, Torch and Recon), saddles (S-Works Power, S-Works Phenom), tires (S-Works Turbo), bottle cages and helmets. Searchers write it as “sworks”, “s works” or “S-Works”; all three mean the same tier.

The badge says nothing about bike type. S-Works versions of road, gravel, cross-country, trail, downhill and electric bikes were all listed on Specialized’s US site when we checked. Beyond the eight lines in the table below, the list included the Shiv TT module, Turbo Creo 2, Turbo Levo SL 2 and Turbo Kenevo SL 2.

Specialized’s tier names, and why the ladder changes by model

From the top, Specialized’s tier names are S-Works, then S-Level or Pro, then Expert and Comp. Some lines add Sport or Elite builds, and some entry builds carry no tier name at all, such as the Roubaix SL8 Shimano Tiagra. No model uses every name. The Tarmac SL9 and Crux 5 replace Pro with S-Level, a tier that pairs the cheaper frame with S-Works-level shifting. The Aethos 2 stops at three tiers.

The table leaves out limited editions. Specialized also lists S-Works LTD builds of the Tarmac SL9 (Built for Legends, and a Remco Evenepoel edition), Crux 5, Epic 9 and Demo 11. They use the same S-Works frames with exclusive paint and some different parts. The S-Works Tarmac SL9 LTD Built for Legends lists at $14,999.99 with SRAM RED AXS and 63 mm Roval Rapide Sprint CLX wheels, $1,000 more than the regular S-Works RED AXS build. Specialized says the Built for Legends runs are numbered: 199 Tarmacs, 119 Epics and 55 Cruxes.

The names also don’t line up across models by price. On the Stumpjumper 15 EVO, the alloy Elite lists at $5,499.99 and the carbon Comp at $4,999.99. The Elite gets a RockShox Lyrik Ultimate fork; the Comp gets a FOX 36 Rhythm. Read the frame and parts lines on the spec page, then the tier name.

Skip the tier names altogether if you are still choosing between bike types. Our guide to hardtail vs full suspension settles that first question for mountain bikes.

Specialized naming glossary

Specialized defines some of these names on its site and leaves others to the spec sheet. Where it gives no definition, the table says so.

S-Works vs S-Level, Pro, Expert and Comp on four current bikes

Each row below comes from the bike’s spec page on specialized.com, checked October 14, 2026. Weights are Specialized’s listed figures for a 56 cm road frame, a size MD Epic and a size S4 Stumpjumper. Prices are US list prices on that date; they change, so check the current price before you buy. Readers in Germany, the UK and elsewhere should open their own country’s Specialized site, where prices and builds differ.

Tarmac SL9 (road race), Shimano builds

Specialized lists the FACT 10r SL9 frame at 822 g, 135 g more than the 687 g S-Works frame. Every Tarmac SL9 tier gets a FACT 12r fork, so the carbon split is in the frame only. The SRAM builds cost $500 more on the S-Works, S-Level and Expert, and $300 more on the Comp. The S-Works frameset alone lists at $5,799.99.

Aethos 2 (lightweight road), Shimano builds

The Aethos 2 shows the frame gap on its own: 110 g between the 595 g S-Works frame and the 705 g FACT 10r frame. As framesets, the S-Works lists at $5,499.99 and the FACT 10r at $3,499.99.

Epic 9 (cross-country race)

On the Epic 9, the Pro already has the S-Works suspension: the same RockShox SID Ultimate fork and SIDLuxe Ultimate shock with Flight Attendant. The S-Works adds the FACT 12m frame, the XX SL drivetrain and Roval World Cup wheels for $3,250 more.

Stumpjumper 15 EVO (trail), SRAM and RockShox builds

Here the S-Works and Pro share the frame carbon, the fork, the shock and the wheel rims. The $2,000 buys a carbon link, the XX drivetrain over X0, i9 Hydra 2 hubs, a Deity Speedway carbon handlebar (Specialized lists an alloy Bike Yoke bar on the Pro in sizes S1-S2) and SRAM’s AXS Pod Ultimate shifter. Specialized also lists an S-Works build with Shimano XTR Di2 and FOX Factory suspension, and an Expert with Shimano XT Di2.

Does S-Works always mean better carbon?

No. Specialized grades its FACT carbon with a number and a letter: “r” on road and gravel frames, “m” on mountain frames, and a higher number on the pricier frame within each model we checked. Six of the eight models in the first table give the S-Works a higher grade than the tier below it. Two don’t:

• Stumpjumper 15 EVO: FACT 11m on the S-Works, Pro, Expert and Comp. The S-Works frame adds a carbon link.
• Turbo Levo 4: FACT 11m on the S-Works, Pro and Expert. The S-Works gets a carbon link, a more powerful S-Works 3.1 motor (850 W peak and 111 Nm, against 810 W and 105 Nm for the Specialized 3.1 motor on the Pro and Expert) and a 900 Wh battery in place of 840 Wh.

The S-Works Demo 11 downhill bike lists FACT 11m as well, and the S-Works Diverge 4 uses FACT 11r against FACT 9r on its Pro and Expert. So a “12” frame is not part of the S-Works definition. On the Stumpjumper 15 EVO, the S-Works premium buys parts (drivetrain, hubs, carbon bar) you could fit to a Pro later. On the Turbo Levo 4 it also buys the S-Works motor and the 900 Wh battery, which Specialized lists only on the S-Works build.

Why are S-Works bikes so expensive?

The Tarmac SL9 lets you isolate the S-Works premium. The S-Works and S-Level Dura-Ace builds share the groupset, the dual-sided power meter, the integrated Roval cockpit and the FACT 12r fork. The $3,500 between them buys three things:

• The 687 g FACT 12r frame in place of the 822 g FACT 10r frame, with CeramicSpeed headset bearings.
• Rapide CLX III wheels, with Roval hubs, ceramic bearings and composite spokes, in place of Rapide CL III wheels with DT 350 hubs and DT Swiss Competition Race spokes. Both rims are 51 mm deep.
• 0.5 kg off the complete bike (6.6 kg against 7.1 kg). The frame accounts for 135 g of that; the other 365 g comes from the wheels and smaller parts.

No spec line explains the rest of the price. Specialized sells S-Works as the bike its pro teams race (“Made in Racing” is its own line), and you pay for that position too. Each step down the ladder buys a different mix of parts and grams, as the next table shows.

What each step down saves, per 100 g (our math)

Weight is one part of what each step buys. The price gap also buys power meters, electronic shifting and better suspension, and those may matter more to you than weight. On the Tarmac SL9, the cheapest grams sit at the Expert to Comp step and both steps above Expert cost $700 or more per 100 g. On the Aethos 2, the Expert to Pro step is cheap ($370) and the jump to S-Works is dear ($809). On the Epic, the pricey step is Pro, which brings Flight Attendant.

Is S-Works worth it?

For most riders, no. One or two tiers down, you get the same frame family, electronic shifting and, on most models, carbon wheels for thousands less. Our math on the Tarmac shows the scale. A 75 kg rider on the 7.1 kg S-Level carries 82.1 kg up a hill; on the S-Works, 81.6 kg. On a steep climb where gravity sets the pace, the same power gets you up about 0.6% faster, or around 7 seconds on a 20-minute climb. That math ignores air drag, which matters more on flat roads.

S-Works earns its price for three kinds of riders:

• Racers whose results turn on seconds, who already train with power and ride a bike that fits.
• Riders who would buy the top groupset, a power meter and top wheels anyway, and want them from the factory.
• Riders who want the best version and can afford it, which is a fair reason to buy one.

Where the value sits on the bikes we checked:

• Tarmac SL9: Expert ($6,499.99) has the same FACT 10r frame as the S-Level, carbon Roval wheels and Ultegra Di2. The S-Level suits a rider who wants Dura-Ace and a power meter without the S-Works frame.
• Aethos 2: Pro ($8,499.99) adds a power meter and Alpinist CL II wheels in place of the Expert’s C38s, and costs $5,500 less than the S-Works.
• Epic 9: Expert ($7,499.99) for most cross-country riders. Racers who want Flight Attendant can stop at the Pro.
• Stumpjumper 15 EVO: Pro ($7,999.99). It shares the S-Works frame carbon, suspension and wheel rims.

Skip S-Works if you ride salted winter roads or gritty commutes on it. Grit wears chains, cassettes and bearings on any tier, and replacement top-tier parts cost more. Keep the race bike for dry days and ride a cheaper bike through winter.

S-Works buying checklist

Run this list before you pay the S-Works premium:

1. Confirm your frame size first. Our bike size calculator by type gives a starting size for road, gravel and mountain bikes; for mountain bikes, check the mountain bike size chart as well. No tier fixes a wrong size.
2. Open the spec pages for the S-Works and the tier below it. Write down the frame line (FACT grade) for each. If it matches, the premium buys parts only.
3. Compare the same groupset brand. On the Tarmac SL9, the SRAM builds cost $300 to $500 more than their Shimano twins.
4. List what the next tier already has: the Tarmac S-Level has Dura-Ace Di2 and a power meter, the Epic Pro has Flight Attendant, the Stumpjumper Pro has the S-Works suspension.
5. Divide the price gap by the weight gap, as in our table. On the Tarmac SL9, both steps above Expert cost $700 or more per 100 g saved.
6. Price an upgrade path. Wheels are one of the largest parts gaps between Expert and S-Works on the road bikes (Roval C38 against CLX III); our road bike wheels buying guide covers what to check before you buy a set later.
7. If you already own a groupset, compare framesets: S-Works Tarmac SL9 $5,799.99, S-Works Aethos 2 $5,499.99, Aethos 2 FACT 10r $3,499.99.
8. Check the used market. Price a used S-Works against a new Expert or Pro; read our review of The Pro’s Closet before buying from a used dealer, and ask for the original receipt.
9. Test ride the S-Works and the next tier down in the same size, on the same day, with the same tire pressure.

S-Works questions

Is S-Works a separate brand from Specialized?

No. S-Works is Specialized’s top tier, and Specialized sells S-Works bikes and parts on the same website as the rest of its range.

What does S-Works stand for?

Specialized says the name comes from the factory “works” motorcycles of motocross: machines a manufacturer builds for its own racers. Specialized’s history page doesn’t say what the S stands for.

What is an S-Works Rennrad?

“Rennrad” is German for road bike. Specialized’s current S-Works road bikes are the Tarmac SL9 (racing), the Aethos 2 (lightweight climbing) and the Roubaix SL8 (endurance). Check prices and builds on Specialized’s German site, since they differ from the US figures above.

Is an S-Works Tarmac faster than a Tarmac Expert?

On a climb, yes, by the weight math above: the S-Works Tarmac SL9 Dura-Ace weighs 0.93 kg less than the Expert Ultegra Di2 (6.6 kg against 7.53 kg). The S-Works also gets 51 mm Rapide wheels and an integrated Roval cockpit, where the Expert has Roval C38 wheels and an alloy bar. Specialized doesn’t publish a speed figure for one tier against another.

Sources

All specs, weights and US list prices were read from specialized.com on October 14, 2026. Specialized’s product pages also sell the bikes; we cite them for published specs only, with no affiliate links.

• Specialized. A 50-Year Tradition of Innovation. S-Works debut in 1992, motocross “works” origin, S-Works Tarmac E5 (2003), founding in 1974.
• Specialized Tarmac SL9 spec pages: S-Works Dura-Ace Di2, S-Works RED AXS, S-Works frameset, S-Level Dura-Ace Di2 (822 g FACT 10r frame), Expert Ultegra Di2, Comp 105 Di2, Comp Rival AXS.
• Specialized Aethos 2 spec pages: S-Works Dura-Ace Di2, Pro Ultegra Di2, Expert Ultegra Di2, S-Works frameset, FACT 10r frameset.
• Specialized Epic 9 spec pages: S-Works, Pro, Expert, Comp, Sport.
• Specialized Stumpjumper 15 EVO spec pages: S-Works, Pro, Expert, Comp, Elite Alloy.
• Specialized frame grades for other lines: S-Works Roubaix SL8 and Roubaix SL8 Pro; S-Works Crux 5 and Crux 5 S-Level; S-Works Diverge 4 and Diverge 4 Pro; S-Works Turbo Levo 4 and Turbo Levo 4 Pro; S-Works Demo 11.
• Specialized S-Works LTD pages: S-Works Tarmac SL9 LTD Built for Legends, S-Works Tarmac SL9 LTD Remco Evenepoel, S-Works Crux 5 LTD, S-Works Epic 9 LTD, S-Works Demo 11 LTD and Diverge 4 Pro LTD.
• Other S-Works and tier pages: S-Works Stumpjumper 15 EVO Shimano XTR Di2, Stumpjumper 15 EVO Expert Shimano XT Di2, Stumpjumper 15 Pro (fork travel), S-Works Turbo Levo SL 2, S-Works Turbo Creo 2, S-Works Turbo Kenevo SL 2 frameset.
• Specialized category pages: S-Works (saddles, tires, cages, Shiv TT module), cycling shoes (S-Works Ares 2, Torch, Recon), electric bikes (Turbo).