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Check Out Peter Sagan’s Custom Specialized S-Works Tarmac

Sagan’s new ride is lighter with better handling.

Matt Phillips |
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Sagan’s new ride is lighter with better handling. – By Matt Phillips

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Five-time green jersey winner Peter Sagan completed stage two of the Tour aboard his customised 2018 Specialized Tarmac. Launched the day before the Tour’s July 1 kickoff, the new Tarmac features an all new frame design that’s more aerodynamic, and a significant weight reduction as well: a 56cm frame–Sagan’s size–carries a claimed weight of just 733 grams with the “ultralight” finish.
s2Sagan’s Bora Hansgrohe team currently rides a full Shimano Dura Ace Di2 drivetrain. The 4iiii dual-side power meter implanted in the crankset keeps track of Sagan’s watts.s3Though clinchers, and tubeless clinchers, have been spotted in the professional ranks more regularly of late, glue-on tubular tyres are still the choice for the majority of the peloton, Sagan included. Sagan rolls on 26mm-wide S-Works Turbo Allaround 2 tubulars from Specialized.s4One of the most impressive details of the new Tarmac: room for up to 30mm tires with rim brakes. Even with Sagan’s 26mm-wide tyres, plenty of clearance remains.

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The finish on Sagan’s bike looks subtle at first, but a closer look reveals complex details. The silver has an iridescent quality that, depending on the light, reflects back the colors of the rainbow: an homage to Sagan’s World Champion jerseys. The outline of the “S-Works” logo appears gold, but it too changes colors as the viewing angle changes. Small touches of Bora-Honsgrohe’s team colour–a light green–provide tasteful accents.

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Like the bike he rode in last year’s Tour, Sagan’s new Tarmac uses Specialized Aerofly flat handlebar. The 250 gram (claimed) carbon bar features a wing-shaped top section which helps the bar cut 17 seconds from a 40k ride (compared to a traditional drop bar), claims’s Specialized’s product information.

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This K-Edge out-in front mount for Garmin Edge is laser etched with one of Sagan’s nicknames.

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This port in the downtube is unused when running an electronic drivetrain like Sagan. When a mechanical drivetrain is used, the blank is swapped for a different insert that routes the derailleur cables through the down tube.

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Double-sided tape holds the Shimano Di2 junction box in place . Note the electrical tape covering up the sponsor-incorrect stem: a Zipp SL Sprint.
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Sagan rides Shimano Dura Ace pedals with the optional +4mm wider axles.
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Smooth steering provided by team-sponsor Ceramic Speed’s ceramic-bearing headset.
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This entry port in the top tube does double duty. Both the brake cable and the Shimano Di2 wire-just visible behind the brake housing-enter though this hole.
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Sagan’s S-Works Romin Evo saddle is colour matched to his bike. The line in the center of the saddle was a reference point used by mechanics to ensure all Sagan’s bikes are set up the same.
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Some of the most obvious outward changes to the new Tarmac are the dropped seatstays and wheel cutout in the seat tube.
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Like the Tinkoff team he rode for last year, Sagan’s new team uses Supakaz Super Sticky Kush bar tape. The tape has a sticky surface, and offers some cushioning.
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The new Tarmac uses a proprietary shaped seatpost–the previous model used a round 27.2mm post. The new post is both more aerodynamic and smoother riding than a round post, claim Specialized representatives.
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Sagan’s new Tarmac is built with the newest version of Shimano’s Dura Ace Di2 drivetrain. This group’s shifting performance is the standard by which all other groups are judged.

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