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Pro Bike Check: Sina Frei’s Specialized Epic EVO with Flight Attendant

specialized epic s-works xc race bike sina frei rockshox flightattendant sidluxe shock 2023 world champs pro bike check
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Update: The original publication of this post identified Sina Frei’s bike as the Epic, when it is in fact the Epic EVO.

While Christopher Blevins has whipped out the Epic World Cup for the occasional Short Track race, his Specialized Factory Racing team mate, Sina Frei, seems to prefer the longer-travel Specialized Epic EVO for all of her XC racing endeavors. This weekend, she will make her assault on the 2023 UCI XCO World Championships aboard the Epic EVO, with new RockShox Flight Attendant SID and SIDLuxe Shock.

Pro Bike Check: Sina Frei’s Specialized Epic EVO Race Bike

  • Rider: Sina Frei
  • Nationality: Swiss
  • Age: 26
  • Height: 151 cm
  • 2023 Season Best Result: 6th at UCI World Cup, Leogang
sina frei pro bike check 2023 world champs xc scotland rockshox sid sl flight attendant
For now, Sina is running 56 PSI in the fork with zero tokens

At 151cm tall (just shy of 5 feet), Sina Frei is riding the Specialized Epic in a size small, with a 406mm reach, a 438mm chainstay length and a 100mm travel RockShox Reverb AXS dropper. The frame’s flex pivot-utilizing linkage delivers 110mm of rear wheel travel, damped by what we can presume to be a prototype RockShox SIDLuxe Flight Attendant Shock. It is paired with a 120mm travel RockShox SID Flight Attendant fork.

Flight Attendant is RockShox’s offering of electronically-controlled automatic suspension, that is able to switch the damping between Open, Pedal and Lock positions in response to changing trail conditions. However, it is not yet available for the brand’s shorter-travel suspension components that are aimed at XC.

That said, it is not the first time we’ve seen Flight Attendant in use on a World Cup XCO course; indeed, Nino Schurter took his 35th World Cup win this season aboard a Flight Attendant-equipped Scott Spark. Of course, with the shock discreetly tucked away inside the frame, we didn’t get a look at the SIDLuxe Flight Attendant Shock. On Sina Frei’s Specialized Epic EVO, it is in plain view.

For today’s practice session, Sina’s bike was wired up with a data acquisition system of Specialized’s own design. Mechanic, Jerome Alix, says they are able to measure everything needed; compression and rebound events, and their speed, as well as the vibrations coming up through the frame. This evening, the team’s engineer will review the data and make adjustments to the suspension damping, if necessary.

specialized s-works epic world champs bike sina frei 680mm mini rise carbon bar upside down

In the cockpit, Sina runs an S-Works Carbon Mini Rise Bar cut to 680mm but, as you can see, it’s upside down. This lowers the ride height to deliver a more aggressive seated pedalling position that can really help riders to keep the lightweight front end of the bike from lifting when they are laying down the power on steep, technical climbs. To the same end, Sina is running a 77mm reach stem from Syntace with a significant negative offset, to the tune of around 30mm.

Sina’s bike rolls on Roval Control SL wheels with 30mm internal width carbon rims. The team are still testing to find out what’s best for the slick, root-riddled terrain, but in today’s practice, Sina was running a 29″ x 2.35″ Specialized Renegade Control tire in the rear with the T7 compound. Up front, she has the Specialized Fast Track Control tire, also in a 2.35″ width. No tire inserts here.

Translating Sina’s efforts to the trail is of course the SRAM XX SL Eagle AXS Transmission drivetrain, with the power meter crankset. Crank arms are 165mm. For speed management, she relies upon SRAM Level Ultimate Stealth brakes with the 4-piston caliper and 160mm rotors.

Aside from the RockShox Flight Attendant suspension, the oil slick-finished HT Leopard pedals and Specialized Power Pro Mirror 3D-printed saddle, and the Syntace stem, Sina’s Specialized Epic EVO XC bike for the 2023 UCI Cycling World Champs is of stock configuration.

Good luck to Sina and the rest of the Specialized Factory Racing team this weekend!

specialized.com

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SomeGuy
SomeGuy
8 months ago

“what we can presume to be a prototype RockShox SIDLuxe Flight Attendant Shock”. It looks like the first try, honestly.

Last edited 8 months ago by SomeGuy
Bobinas
Bobinas
8 months ago
Reply to  SomeGuy

Not going to change much for production.

Davinder Singh
Davinder Singh
8 months ago

Flight attendant or not, it’s just a marketing BS for the already Brain shock on Rockshox Specialized bikes, maybe some minor upgrades. End of the day you end up paying over a grand for something thats not really new technology.

Joe
Joe
8 months ago
Reply to  Davinder Singh

Completely different systems … you can’t really compare a mechanical inertia valve to an electronic sensor system.

Last edited 8 months ago by Joe
Philipp
Philipp
8 months ago
Reply to  Davinder Singh

I’d argue beeing new isn’t the point of technology. But more so working as planned and bringing something valuable to the table

Shane
Shane
8 months ago

That is an Epic Evo, no brain on that frame, also lighter and longer travel.
I like it.

tech9
8 months ago

This is an Epic Evo, not an Epic.

Jason DW
Jason DW
8 months ago

Good luck to Sina! Shes such humble, down to earth person. Great rider and human. Last year she stopped, in the middle of a World Cup to help fellow rider (Githa Micheals iirc) out, getting her bike in running condition. Talk about a class act.

Benno Willeit
Benno Willeit
8 months ago
Reply to  Jason DW

110% right with your comment!

Kyle
Kyle
8 months ago

Great write up! Splitting grams here, but by the carbon rails it looks like she is on the S Works Power Mirror saddle, not the Ti railed Mirror Pro. Good luck Sina!!!!

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