Aethos Expert Di2 (2026)
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail

Aethos 2

Break the Rules

With a 705g frame, the Aethos 2 is the lightest bike in its class. But weight was never the point. Built by breaking racing’s rules to deliver pure road riding bliss, it’s engineered to disappear beneath you: responsive, supple, and sublime. Now with increased tire clearance, refined components, and data-based fit-enhancing geometry, it brings that transcendent ride feel to more riders than ever. Aethos 2 breaks the rules, for the love of the ride.

At a Glance

  • Use: Performance Road Riding Frameset: 705g FACT 10r Frame / FACT 10r Fork
  • Fit: Performance Endurance
  • Cockpit & Wheels: Roval Alpinist bar, Pro SL stem, C38 wheels
  • Drivetrain: Shimano Ultegra Di2
  • Weight: 7.12kg (56cm)

Specialized

Aethos Expert Di2 (2026)

$6,600.00
Free Shipping
on this Specialized bike!
*Discount applies automatically at checkout.

Size Guide

Height (Cm) Size
5'1"-5'4" 49
5'4"-5'6" 52
5'6"-5'9" 54
5'9"-6'0" 56
6'0"-6'3" 58
6'3"-6'6" 61

Need help finding the perfect bike? Text or call Kathleen. 858-943-4229, Monday-Friday 8AM-5PM PST

Shop Specialized Road Bikes
In stock
PRO SETUP Expert Assembly 95% Ready to ride out of the box.
CERTIFIED Master Mechanic Assembly Precision dialed before shipping.
SINCE 1992 Over 30 Years of Trust Decades of cycling expertise.

SKU: 97226-3161

Aethos 2

Break the Rules

With a 705g frame, the Aethos 2 is the lightest bike in its class. But weight was never the point. Built by breaking racing’s rules to deliver pure road riding bliss, it’s engineered to disappear beneath you: responsive, supple, and sublime. Now with increased tire clearance, refined components, and data-based fit-enhancing geometry, it brings that transcendent ride feel to more riders than ever. Aethos 2 breaks the rules, for the love of the ride.

At a Glance

  • Use: Performance Road Riding Frameset: 705g FACT 10r Frame / FACT 10r Fork
  • Fit: Performance Endurance
  • Cockpit & Wheels: Roval Alpinist bar, Pro SL stem, C38 wheels
  • Drivetrain: Shimano Ultegra Di2
  • Weight: 7.12kg (56cm)
SPECIFICATIONS

Frame: Aethos 2 FACT 10r Carbon, Rider First Engineered™, Threaded BB, Hidden Cable Routing, 12x142mm thru-axle, flat-mount disc

Fork: Aethos 2 FACT 10r Carbon, 12x100mm thru-axle, flat-mount disc

Front Brake: Shimano Ultegra BR-R8170 Hydraulic Brake

Rear Brake: Shimano Ultegra BR-R8170 Hydraulic Brake

Bottom Bracket: Shimano Threaded BSA BB

Rear Derailleur: Shimano Ultegra Di2 R8150, 12-speed

Front Derailleur: Shimano Ultegra Di2 R8150, braze-on

Shift Levers: Shimano Ultegra Di2 R8170, hydraulic disc

Crankset: Shimano Ultegra R8100, 52/36t

Cassette: Shimano Ultegra, 12-speed, 11-30t

Chain: Shimano XT M8100, 12-speed w/ quick link

Inner Tubes: 700x20-28, 48mm Presta Valve

Front Wheel: Roval C38, 21mm internal width carbon rim

Rear Wheel: Roval C38, 21mm internal width carbon rim

Front Tire: S-Works Turbo, 700x28

Rear Tire: S-Works Turbo, 700x28

Saddle: Body Geometry Power Expert

Handlebars: Roval Alpinist Carbon Handlebar, 125mm drop, 75mm reach

Seatpost: Roval Alpinist Carbon Seatpost

Seat Binder: Specialized Alloy, 30mm

Stem: Specialized Pro SL, alloy, 4-bolt

Tape: Supacaz Super Sticky Kush

Product ID: 221565

Weight (Size 56): 7.12 kg (15 lb, 11.2 oz), tubeless

GEOMETRY
49 52 54 56 58 61
Crank Length 165 170 172.5 172.5 175 175
Handlebar Width 380 400 400 420 420 440
Stem Length 80 90 100 100 110 110
Saddle Width 155 155 143 143 143 143
Seatpost Length 300 300 360 360 360 360
Stack 522 538 559 580 606 627
Reach 373 377 384 391 398 404
Head Tube Length 114 128 150 169 198 218
Head Tube Angle 71.4 72.1 72.5 73 73 73.5
BB Height 265.5 265.5 267 267 268.5 268.5
BB Drop 76.5 76.5 75 75 73.5 73.5
Trail 62 58 55 55 55 52
Fork Length, Full 372 372 372 372 372 372
Fork Rake/Offset 50 50 50 47 47 47
Front Center 581 584 594 599 614 621
Chainstay Length 410 410 410 410 410 410
Wheelbase 978 981 992 998 1013 1020
Top Tube Length, Horizontal 508 526 544 557 572 584
Bike Standover Height 719 737 759 779 805 834
Seat Tube Length 450 470 490 510 535 570
Seat Tube Angle 75.5 74.5 74 74 74 74
FEATURES

Key Technologies

fact-10-carbon-bikes.png__PID:dd2bc090-6360-4998-9db4-69a982a96392

FACT Carbon Fiber

Short for Functional Advanced Composite Technology, is a comprehensive engineering process that guides the development of frames and components, all the way from initial sketches to finished products.
More Info