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Today’s Deals2025 Factor
Ostro Gravel Frameset Premium
A carbon frame aero frameset with hydraulic disc brakes.
Manufacturer Price
$5,999| Weight | 2.1 lbs (frame) |
|---|---|
| Frame | Carbon |
| Fork | Carbon |
| Wheels | 700c |
| Brakes | Hydraulic Disc |
5'1" – 5'5"
5'3" – 5'7"
5'5" – 5'9"
5'7" – 6'0"
5'10" – 6'2"
6'0" – 6'4"
🐐 Estimated
None yet.
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Summary
The Factor Ostro stands out as a top-tier aero bike, blending aerodynamic efficiency with real-world usability. It's praised for its balanced stiffness and comfort, impressive aerodynamic gains, and sharp handling. While it excels in performance and aesthetics, some note its high price and race-oriented stiffness as potential drawbacks.
Balanced stiffness and comfort
Impressive aerodynamic efficiency
Sharp and precise handling
Lightweight and competitive with top aero bikes
Excellent blend of real-world usability and on-paper speed
High price point
Race-oriented stiffness may not suit all riders
Some components require careful maintenance
The OSTRO is the bike that encompasses Factor and its presence worldwide.
BikerumorThe Factor OSTRO VAM is, quite simply, an excellent race bike.
Cycling Newsthe blend of stiffness, pin-sharp handling and refinement the Ostro offers is intoxicating
CyclistI didn’t brake through this section riding the Factor Ostro VAM. Boom, a PR that I haven’t been quite comfortable enough to match on other bikes.
VeloFeedback?
View all reviews
Feb 2026 · Ronan Mc Laughlin
Deep wheels, further aero refinements, and a prototype One-like fork
Mar 2024 · Suvi Loponen
The collab tells the story of how cycling saved the career of pro skateboarder Chico Brenes – but what has that to do with the turquoise-browed motmot, the national bird of Nicaragua? All will be revealed…
Feb 2024 · Jordan Villella
The bike that encompasses Factor and its presence worldwide is the OSTRO. It's the most recognizable of its offerings and just got an update.
Jun 2023 · Martin Staffa
Lightweight, comfortable, and aerodynamic: can the 2023 Factor OSTRO Gravel do it all? We put it through the wringer to find out!
Absolutely uncompromising race bike
CeramicSpeed bottom bracket
Feels fast
Lack of comfort – harshest bike on test
Creaking seat post clamp that comes loose
Jun 2023 · Warren Rossiter
Race-ready, aerodynamic and made for gravel
Rapid
Put together beautifully
Brilliant specification
Stiff and responsive
Road derived geometry
Firm ride
Feb 2023 · RBA Staff
A new generation of gravel race bikes
Felt: planted and in control, stable at high speeds
Felt: wide tire clearance (700x50mm)
Felt: multiple bottle cage mounts
Factor: excellent climbing performance
Factor: quick handling
Factor: light weight (17.78 lbs)
Factor: premium component spec
Felt: stiff Zipp 303S wheels; benefited from wheel swap
Felt: knee collision with rear brake hose during out-of-saddle climbing
Felt: seatpost-mounted water bottle difficult to access; side-load cage needed
Factor: stiff feedback from seatpost
Factor: lacked compliance for all-day efforts
Factor: internal routing complicated travel packing
Both: lacked compliance desired for long events like Unbound Gravel
Feb 2023 · Will Jones
Crazy stiff, super aero, and a road bike position make life uncomfortable on rougher terrain
Very, very fast
Striking looks
Uncomfortable
Not as versatile as many modern road bikes
No mudguard mounts
Dec 2022
Factor uses its road-proven aero tricks to make a seriously fast gravel bike.
Good tire clearance
Lightweight and aero frame
Blends the feel of a road bike with gravel capabilities
Threaded bottom bracket
A little harsher than other gravel racers
Electronic shifting only
Internal routing can complicate simple adjustments
| Frame | TeXtreme®, Toray®, Nippon Graphite® Pitch-Based Fiber BB Standard: T47, Threaded Tire Clearance: 45c Colors: Ud Gloss; Heritage Blue; Olive Green; Prisma Paint (+$600.00) |
|---|---|
| Fork | OSTRO Wide Stance Fork |
| Bottom Bracket | CERAMICSPEED T47A BB - SHIMANO |
| Headset | CeramicSpeed SLT 1.5″ bearings |
| Seatpost | 0 and 20mm setback available Type: Rigid |
| Brakes | Disc Type: Hydraulic Disc |
|---|
First added March 23
Last updated March 21
Not listed for 78 days