null

Break the rules

All-New Specialized Aethos 2

Shop Aethos 2

Specialized Aethos 2

Their lightest road bike yet, the Aethos 2 climbs, corners, and descends unbelievably fast. It wasn't built to chase medals, or conform to racing's rules. It was built to break the rules for the love of the ride.

 

Aethos 2 road bike breaks free for something higher. It’s a portal to the purest ride experience. When effort vanishes, the bike disappears, and body, mind, and machine move as one. And for a timeless moment, all is right in the world.

Specialized created their lightest road bike ever with the Aethos 2, weighing in at just 5.9kg. It's so light, it's technically a crime.

Specialized refined the Aethos model with updated geometry, equipped it with Roval Alpinist components, and made subtle but significant improvements that resulted in a bike that is more perfect for more riders.

  • Refined geometry for a better fit, supported by decades of body geometry fit data.
  • Increased tire clearance up to 35mm for more comfort, confidence, and versatility.
  • All-new Roval cockpit and wheels that are lighter, smoother, and fully integrated.

AETHOS 2

Geometry Updates

Together, these changes create that "in-the-bike" sensation: stable through corners, light at the bars, and easy on your shoulders.

• 15mm taller stack for more comfort and less pressure on your hands

• 3mm lower bottom bracket for a more planted feel in corners

• 7mm longer wheelbase for added stability at speed

• 0.5° slacker headtube for smoother control

More Tire Clearance

Up to 35mm of tire freedom, with no added weight.

 

More tire volume means smoother, faster rides, more grip, and access to more roads. Aethos 2 clears 35mm tires with ease, unlocking new versatility without sacrificing weight or feel. That kind of upgrade usually comes at a cost, but not here. 

Aethos 2 Geometry Chart

49 52 54 56 58 61
Stack 522mm 538mm 559mm 580mm 606mm 627mm
Reach 373mm 377mm 384mm 391mm 398mm 404mm
Head Tube Length 114mm 128mm 150mm 169mm 198mm 218mm
Head Tube Angle 71.4° 72.1° 72.5° 73° 73° 73.5°
BB Height 266mm 266mm 267mm 267mm 269mm 269mm
Trail 62mm 58mm 55mm 55mm 55mm 52mm
Fork Length 372mm 372mm 372mm 372mm 372mm 372mm
Fork Offset 50mm 50mm 50mm 47mm 47mm 47mm
Front Center 581mm 584mm 594mm 599mm 614mm 621mm
Chainstay Length 410mm 410mm 410mm 410mm 410mm 410mm
Wheelbase 978mm 981mm 992mm 998mm 1013mm 1020mm
Top Tube Length 508mm 526mm 544mm 557mm 572mm 584mm
Bike Standover Height 719mm 737mm 759mm 779mm 805mm 834mm
Seat Tube Length 450mm 470mm 490mm 510mm 535mm 570mm
Seat Tube Angle 75.5° 74.5° 74° 74° 74° 74°

Aethos 2 FAQs

Specialized added 15mm of stack to most frame sizes, slackended the head tube angle by 0.5 degrees, and lowered the bottom bracket by 3mm. The 49cm frame gains 8mm of stack, and the 52cm gains 11mm. The result is a geometry that opens the Aethos experience to more riders while maintaining its lively, reactive road handling.

35mm tires with 4mm of clearance on each side.

  • S-Works Aethos 2 SRAM RED AXS: 5.98 kg
  • S-Works Aethos 2 Shimano Dura-Ace Di2: 6.05 kg
  • Aethos 2 Pro SRAM Force AXS: 6.71 kg
  • Aethos 2 Pro Shimano Ultegra Di2: 6.73 kg
  • Aethos 2 Expert SRAM Force AXS: 7.05 kg
  • Aethos 2 Expert Shimano Ultegra Di2: 7.12 kg

Yes, it works with any round 27.2,, seatpost and uses a standard 30mm seatpost collar.

Yes, it's compatible with any standard bar and stem combo using a 1 1/8" steerer clamp. Use Specialized headset spacers.

Yes, it comes with a custom UDH hanger designed to save weight and preserve clean road-bike aesthetics. The frame is also fully compatible with SRAM's standard UDH hanger and full-mount rear derailleaurs.

© 2025 The Bike Shop All rights reserved | Sitemap