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Peter Sagan's Specialized S-Works Tarmac

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The bike that won the 2015 UCI road world championships: Peter Sagan's Specialized S-Works Tarmac

The bike that won the 2015 UCI road world championships: Peter Sagan's Specialized S-Works Tarmac
(Image credit: Specialized)
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Look KeO Blades can handle whatever wattage Sagan cranks out

Look KeO Blades can handle whatever wattage Sagan cranks out
(Image credit: Specialized)
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Dura-Ace Di2 shifts so well the K-Edge chain catcher may be redundant, but it's likely good for peace of mind, nonetheless

Dura-Ace Di2 shifts so well the K-Edge chain catcher may be redundant, but it's likely good for peace of mind, nonetheless
(Image credit: Specialized)
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With the abundance of bottom bracket 'standards', even the pros bikes have to use adaptors sometimes these days

With the abundance of bottom bracket 'standards', even the pros bikes have to use adaptors sometimes these days
(Image credit: Specialized)
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Shimano Dura-Ace 9000 calipers are hard to beat

Shimano Dura-Ace 9000 calipers are hard to beat
(Image credit: Specialized)
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Sagan's Prologo Scratch 2 is marked at the center for consistent measurement

Sagan's Prologo Scratch 2 is marked at the center for consistent measurement
(Image credit: Specialized)
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GPS transponders were on riders' bikes during the race

GPS transponders were on riders' bikes during the race
(Image credit: Specialized)
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We've seen a lot of things on bikes over the years, but Southern US marketing love is a first for us

We've seen a lot of things on bikes over the years, but Southern US marketing love is a first for us
(Image credit: Specialized)
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Nothing but straight-ahead 53/39 on these 172.5mm cranks

Nothing but straight-ahead 53/39 on these 172.5mm cranks
(Image credit: Specialized)
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Sagan's mechanics weren't stingy with the chain oil for worlds

Sagan's mechanics weren't stingy with the chain oil for worlds
(Image credit: Specialized)
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FSA and Dura-Ace mix in the drivetrain

FSA and Dura-Ace mix in the drivetrain
(Image credit: Specialized)
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A carbon FSA post complements the alloy FSA Energy bar

A carbon FSA post complements the alloy FSA Energy bar
(Image credit: Specialized)
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After hiring key staffers from Continental, Specialized has been producing legitimate race tubulars recently, like this AllRound 2

After hiring key staffers from Continental, Specialized has been producing legitimate race tubulars recently, like this AllRound 2
(Image credit: Specialized)
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Most riders get their name on a sticker. Sagan has his worked into his one-off paint job

Most riders get their name on a sticker. Sagan has his worked into his one-off paint job
(Image credit: Specialized)
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Shimano Dura-Ace Di2 sprint shifters are tucked just under and inboard of the hoods

Shimano Dura-Ace Di2 sprint shifters are tucked just under and inboard of the hoods
(Image credit: Specialized)
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Sagan runs a traditional-bend bar with nontraditional tape from Supa Caz, the company of Specialized founder Mike Sinyard's son Anthony Sinyard

Sagan runs a traditional-bend bar with nontraditional tape from Supa Caz, the company of Specialized founder Mike Sinyard's son Anthony Sinyard
(Image credit: Specialized)
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This Tarmac gets a thumbs up from the UCI, the nation of Slovakia, and fans of black-and-white camo

This Tarmac gets a thumbs up from the UCI, the nation of Slovakia, and fans of black-and-white camo
(Image credit: Specialized)

Slovakian Peter Sagan stormed to the win at the 2015 UCI World Championships in bold solo fashion, attacking on the final hill and holding his advantage to the line. He did so aboard a custom-painted Specialized S-Works Tarmac.

While some elements of the build are fairly straightforward, such as the alloy FSA Energy Traditional Bend bars or Look KeO Blade pedals, some parts are clearly unique to Sagan's physiology, like the 140mm Zipp SL Sprint stem that lunges forward like the figurehead on a ship's prow.

While team sponsor Specialized introduced the new Venge ViAS aero bike earlier this year, Sagan opted to stick with his tried-and-true Tarmac.

Click through the gallery above for a close look at Sagan's machine from the World Championships in Richmond, Virginia.

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Complete bike specifications

Frame: Specialized S-Works Tarmac, 56cm
Stem: Zipp SL Sprint, 140mm
Handlebar: FSA Energy Traditional Bend, 42cm (c-c)
Tape: Supa Caz
Brakes: Shimano Dura-Ace 9000
Dual-control levers: Shimano Dura-Ace 9070 Di2
Front derailleur: Shimano Dura-Ace 9070 Di2
Rear derailleur: Shimano Dura-Ace 9070 Di2
Cassette: Shimano Dura-Ace 9000, 11-28T
Chain: Shimano Dura-Ace 9000
Crankset: FSA K-Force Light, 172.5mm, 53/39T
Bottom bracket: Ceramic Speed
Pedals: Look KeO Blade
Wheels: Roval CLX 60
Tubulars: Specialized AllRound 2
Saddle: Prologo Scratch 2
Seatpost: FSA SL-K
Other accessories: SRM PowerControl computer

Critical measurements

Rider's height: 1.84m (6ft 0in)
Rider's weight: 73kg (161lb)
Saddle height from BB, c-t: 76cm
Saddle setback: 82mm
Tip of saddle nose to bars (c): 61cm
Saddle-to-bar drop: 10cm