Rear tire: 700C×28.
Velopedia Bicycle Archive
2023 Specialized Aethos Comp
Original specifications: 7.68kg (16 lb, 14.9 oz) published weight · geometry for 6 published sizes.
Selling this bike? Get the spec link and selling options
At a glance
- Model year
- 2023
- Category
- Road
- Original MSRP
- $4,999.99
- Sizes
- 49, 52, 54, 56, 58, 61
- Colors
- Gloss 100% Red Ghost Pearl over Dune White/Dune White, Satin Carbon/Abalone over Carbon
- Weight
- 7.68kg (16 lb, 14.9 oz)
- Geometry
- 6 manufacturer sizes
- In this record
- 19 specifications · 8 archived images · original MSRP · geometry
- Archive ID
- 900004117
Model history 1 other year
Original buildCarbon Fiber
Frameset
| Frame Construction | Aethos FACT 10R Carbon, Rider First Engineered™, Threaded BB, 12x142mm thru-axle, flat-mount disc |
|---|---|
| Frame Material | Carbon Fiber |
| Fork | FACT Carbon, 12x100mm thru-axle, flat-mount disc |
| Fork Material | Carbon Fiber |
Drivetrain
| Shifters | Shimano 105 Di2 7170 |
|---|---|
| Front Derailleur | Shimano 105 Di2 7150, braze on |
| Rear Derailleur | Shimano 105 Di2 7150 |
| Crankset | FC-R7100, 105, 12-Speed, Holllowtech 2; chainrings: 32T |
| Bottom Bracket | Shimano Threaded BSA BB |
| Cassette | Shimano 105, 12-speed, 11-34t |
| Chain | Shimano SLX M7100, 12-speed w/ quick link |
Brakes
| Brakes | (F) Shimano 105 R7170, hydraulic disc / (R) Shimano 105 R7170, hydraulic disc |
|---|
Cockpit & Contact Points
| Handlebar | Specialized Shallow Drop, 6061, 70x125mm, 31.8mm clamp |
|---|---|
| Stem | Specialized Pro SL, alloy, 4-bolt |
| Saddle | Body Geometry Power Sport, steel rails |
| Seatpost | Roval Alpinist Carbon Seatpost |
Wheels & Tires
| Wheels | (F) DT R470 Disc / (R) DT R470 Disc |
|---|---|
| Front Tire | Turbo Pro, 700x28 |
| Rear Tire | Turbo Pro, 700x28 |
Geometry
Frame measurements by size.
Frame diagram
Select an available measurement to locate it on the frame.
All geometry measurements6 sizes · 20 measurements
| Measurement | 49 | 52 | 54 | 56 | 58 | 61 |
|---|---|---|---|---|---|---|
| Seat tube | 431 mm | 462 mm | 481 mm | 504 mm | 532 mm | 567 mm |
| Effective top tube | 508 mm | 531 mm | 540 mm | 562 mm | 577 mm | 595 mm |
| Head tube | 109 mm | 120 mm | 137 mm | 157 mm | 184 mm | 204 mm |
| Head-tube angle | 71.75° | 72.5° | 73° | 73.5° | 73.5° | 74° |
| Seat-tube angle | 75.5° | 74° | 74° | 73.5° | 73.5° | 73° |
| Chainstay / rear center | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm |
| Wheelbase | 973 mm | 975 mm | 978 mm | 991 mm | 1005 mm | 1012 mm |
| Bottom-bracket drop | 74 mm | 74 mm | 72 mm | 72 mm | 72 mm | 72 mm |
| Bottom-bracket height | 266 mm | 266 mm | 268 mm | 268 mm | 268 mm | 268 mm |
| Reach | 375 mm | 380 mm | 384 mm | 395 mm | 402 mm | 408 mm |
| Stack | 514 mm | 527 mm | 544 mm | 565 mm | 591 mm | 612 mm |
| Standover height | 705 mm | 728 mm | 748 mm | 769 mm | 796 mm | 824 mm |
| Fork offset / rake | 47 mm | 47 mm | 44 mm | 44 mm | 44 mm | 44 mm |
| Front center | 574 mm | 577 mm | 579 mm | 591 mm | 606 mm | 613 mm |
| Trail | 63 mm | 58 mm | 58 mm | 55 mm | 55 mm | 52 mm |
| Fork length / axle-to-crown | 369 mm | 369 mm | 369 mm | 369 mm | 369 mm | 369 mm |
| Seatpost length | 300 mm | 300 mm | 360 mm | 360 mm | 360 mm | 360 mm |
| Crank length | 165 mm | 170 mm | 172.5 mm | 172.5 mm | 175 mm | 175 mm |
| Stem length | 80 mm | 90 mm | 100 mm | 100 mm | 110 mm | 110 mm |
| Handlebar width | 380 mm | 400 mm | 420 mm | 420 mm | 440 mm | 440 mm |
Dimensions as recorded.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
RPM = pedal turns per minute.
How it works
Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.
Speeds are estimates from tire size and pedal cadence. Actual speeds vary.
Parts & serviceability
Find replacement parts

Shimano SLX CN-M7100 12-Speed Chain Silver, 126 Links
126 Links

Shimano 105 CS-R7100 12-Speed Cassette Silver, 11-34T, 12- Speed
11-34T, 12- Speed
More parts (6)

Shimano XT BB-MT801 Bottom Bracket BSA Threaded, One Size
One Size

Shimano 105 FD-R7150 Di2 12-Speed Front Derailleur Black, Braze-On
Braze-On

Shimano 105 RD-R7150 Di2 12-Speed Rear Derailleur Black, Long, 12-Speed
Long, 12-Speed
Based on the original build. Confirm the model, size and fit before ordering; installed parts may differ. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases.
Bike-specific inspection checklist 19 checks based on 5 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: 2023 Specialized Aethos Comp · Road · Published sizes: 49, 52, 54, 56, 58, 61
Frame and fork
Inspect the frame and fork →Archived: Frame: Aethos FACT 10R Carbon, Rider First Engineered™, Threaded BB, 12x142mm thru-axle, flat-mount disc · Fork: FACT Carbon, 12x100mm thru-axle, flat-mount disc · Carbon Fiber
Drivetrain
Check drivetrain wear →Archived: Shifters: Shimano 105 Di2 7170 · Front derailleur: Shimano 105 Di2 7150, braze on · Rear derailleur: Shimano 105 Di2 7150 · Crankset: FC-R7100, 105, 12-Speed, Holllowtech 2; chainrings: 32T · Bottom bracket: Shimano Threaded BSA BB · Cassette: Shimano 105, 12-speed, 11-34t · Chain: Shimano SLX M7100, 12-speed w/ quick link
Brakes
Inspect the brakes →Archived: Brakes: (F) Shimano 105 R7170, hydraulic disc / (R) Shimano 105 R7170, hydraulic disc
Wheels and tires
Check wheels and tires →Archived: Wheels: (F) DT R470 Disc / (R) DT R470 Disc · Front tire: Turbo Pro, 700x28 · Rear tire: Turbo Pro, 700x28
Controls and contact points
Archived: Handlebar: Specialized Shallow Drop, 6061, 70x125mm, 31.8mm clamp · Stem: Specialized Pro SL, alloy, 4-bolt · Seatpost: Roval Alpinist Carbon Seatpost · Saddle: Body Geometry Power Sport, steel rails
Before and during the test ride
Follow the full used-bike inspection order →Have you owned this bike?Help preserve its real-world history by sharing your owner experience.
Share the details that would help another rider understand how this model fits, rides and holds up over time. Velopedia reviews every contribution before publication.
Already contributed? Send me a fresh private edit link
For privacy, Velopedia shows the same confirmation whether or not an experience exists.
Gallery8 images
Checking current listings…
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.





