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2023 Factor

OSTRO VAM

A carbon frame aero bike with hydraulic disc brakes.

Manufacturer Price

$5,499
FrameCarbon
ForkCarbon
Wheels700c Aluminum
BrakesHydraulic Disc
Where to Buy
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Insights
Ride Feel

Based on frame geometry and build specs.

Rider Position
relaxedaggressive
OSTRO VAM
Other Aero bikes
Sizing
49cm

5'1" – 5'5"

52cm

5'3" – 5'7"

54cm

5'5" – 5'9"

56cm

5'7" – 6'0"

58cm

5'10" – 6'2"

61cm

6'0" – 6'4"

🐐 Estimated

Rider Fit Notes
  • 6'2", size 56, Just right
  • 5'7", size 49cm, Just right
Reviews

Summary

The Factor Ostro is an aero-focused gravel race bike designed for speed and performance on smooth terrain. It excels in stiffness, aerodynamics, and handling, making it a top choice for racing and fast rides. However, it sacrifices comfort and versatility, with a firm ride that can be harsh on rough surfaces and limited utility for diverse conditions.

Pros
  • Incredible aerodynamics

  • High stiffness for efficient power transfer

  • Superior handling on smooth terrain

  • Lightweight construction

  • Premium componentry and build quality

Cons
  • Firm and uncomfortable ride, especially on rough terrain

  • Lacks versatility for off-road or all-day comfort

  • Quick steering can be unstable on technical descents

  • High price point for a specialized machine

  • Limited utility features like mudguard mounts

Key Quotes
developed to dominate its category with incredible aero, superior handling, high stiffness and low weight
BikeRadar logoBikeRadar
On smooth, well-graded gravel it is like being shot out of a cannon.
Cycling News logoCycling News
It’s a gravel bike for race day, designed with winning in mind through and through.
Gran Fondo Magazine logoGran Fondo Magazine

Feedback?

View all reviews

Cycling News
Factor OSTRO VAM review: A race bike to rival the best

Sep 2024 · Josh Croxton

How does a lightweight aero bike differ from an aero lightweight bike?

Highs
  • One of the best in our wind tunnel test

  • Impressively lightweight

  • Smooth and stable handling

  • Huge range of fit and spec configuration options at purchase

Lows
  • I have to give it back

Read Review

Velo
Paul Smith’s Limited Edition Factor Ostro VAM Is Inspiring Some Serious Bike Envy

Nov 2023 · Will Tracy

The limited edition Paul Smith Factor bike features striking blocked colors meant to evoke patterns of fabric in clothing. 

Read Review

Gran Fondo Magazine
The 2023 Factor OSTRO Gravel in review - Our big gravel race bike shootout

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!

Highs
  • Absolutely uncompromising race bike

  • CeramicSpeed bottom bracket

  • Feels fast

Lows
  • Lack of comfort – harshest bike on test

  • Creaking seat post clamp that comes loose

Read Review

Road Bike Action
FACTOR OSTRO GRAVEL VS FELT BREED CARBON - GRAVEL BIKE SHOOTOUT - Road Bike Action

Feb 2023 · RBA Staff

A new generation of gravel race bikes

Read Review

Bikerumor
Art Bike: Limited Edition Duke x Factor OSTRO VAM Road Bicycle

Dec 2022 · Andrew Marshall

Peep this colorful design inspired by the poetry of Duke Agyapong and the paintings of Jean-Michel Basquiat.

Read Review

Bicycling
Factor's Fast, Furious Ostro Gravel Racer

Dec 2022

Factor uses its road-proven aero tricks to make a seriously fast gravel bike.

Highs
  • Good tire clearance

  • Lightweight and aero frame

  • Blends the feel of a road bike with gravel capabilities

  • Threaded bottom bracket

Lows
  • A little harsher than other gravel racers

  • Electronic shifting only

  • Internal routing can complicate simple adjustments

Read Review

road.cc
Behold this custom-painted Factor OSTRO VAM made in collaboration with Duke Agyapong

Nov 2022 · Emily Tillett

The Factor x Duke OSTRO VAM frame gets a custom paint job with "layers of meaning"

Read Review

Cyclist
Factor Ostro VAM review

Nov 2022 · Jamie Wilkins

The Ostro VAM stakes a legitimate claim to being the ultimate all-round race bike

Highs
  • Stiffness

  • Comfort

  • Light weight

  • Handling

Read Review

Geometry
Specs
Build
Frame

TeXtreme®, Toray®, Nippon Graphite® Pitch-Based Fiber

BB StandardT47, Threaded

Tire Clearance32c

Fork

OSTRO Wide Stance Fork

Bottom Bracket

CeramicSpeed T47A Aluminium cups / CeramicSpeed bearings with Wheels MFG 24mm BBRight Reducers/Adapters

Headset

CeramicSpeed SLT 1-1/8" and 1-3/8" bearings

Seatpost

Zero and 25mm setback available

TypeRigid

Groupset
Brakes

Hydraulic disc

TypeHydraulic Disc

Wheels
Rims

700c

Rider Notes
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First added March 9

Last updated March 18

Not listed for 1,168 days