FACTOR OSTRO VAM

Lightweight Aero All-Rounder

When the most important aspect of performance is everything – aero, lightness, comfort, handling – the OSTRO is the answer. If pros were limited to one bike to ride all year, they’d all choose the OSTRO in a heartbeat.

OVERVIEW

Factor call the OSTRO an ‘everything’ bike and we agree

The OSTRO VAM is very nearly as aero as the ONE, as ultra-lightweight as the O2 VAM, and as smooth as the O2.

It’s ready for dream trips to the mountains or to the cobbled Classics, for long weekend rides or fast-paced chaingangs, and it especially loves to be raced. It can take tyres up to 32mm, so it’s ready for Britain’s rougher tarmac.

Attributes

AERODYNAMIC

LIGHTWEIGHT

COMFORT

CLIMBING

Terrain Mix
MOUNTAIN
30%

ROLLING
35%

FLAT
35%

The Everything Bike

The pros love it because they never have to sacrifice aerodynamics for lightness or comfort and most races feature mixed terrain. Everyone else loves the OSTRO because it can do the job of three bikes. No matter the ride, it’s always the right bike. Suddenly, N=1.

bike

Most sizes and colours in stock now

Order today and you could have your new bike custom built for you within 1 week. Same day bike fit and built service turnaround also available.

fitting

Let us help you find your size and dial in your fit

We offer a state-of-the-art bike fitting service from our Experience Centre, using the idmatch system. We can also assist remotely to give you a recommendation.

Mechanics Icon_Black

Our mechanics build your bike in-house in Norfolk

Your new bike will be assembled by the skilled technicians in our Experience Centre in Norfolk. It can be delivered straight to your door or you can collect it for a New Bike Day experience.

DESIGN

AERODYNAMICS

Factor designed the OSTRO from the ground up to be as aerodynamic as possible, while also being superlight. Three key technologies enabled this achievement.

The frame tube shapes are aggressively truncated NACA airfoils which deliver the low drag of a much deeper airfoil shape while maintaining lightness, ride quality and stiffness under power.

The fork uses a ‘wide stance’ concept, with the legs set further from the wheel, and the crown features Factor’s ingenious ‘Reversing Flow Energising Channel’. Both work to greatly reduce the turbulence caused by incoming airflow colliding with air being dragged forwards (reversing flow) by the rotating wheel and tyre. In turn, this smooths the airflow onto the downtube, further reducing drag.

The OSTRO’s fully integrated cockpit increases efficiency in several ways. Its sleek, aero shape is an easy win into clean air, and the hidden cabling also reduces drag. These are now common on high-end bikes. What makes the OSTRO special is that Factor achieved this without enlarging the headset and negating the benefits (as most brands do), so the frontal area and headtube profile remains optimised.

Build My OSTRO

LIGHTNESS

The OSTRO is made from exceptionally high grades of carbon fibre, resulting in a disc-brake aero frame which is very light in weight.

This achievement means that Chris Froome and his Israel – Premier Tech teammates can benefit from the aero even on mountain stages. After all, an aero bike isn’t saving any watts sat in the team truck.

For the rest of us, the OSTRO is the bike to do it all. It isn’t just about the mix of terrain in your favourite Sunday loop, it’s about the mix of rides in your ideal year. The OSTRO is the aero bike you can take on holiday to Tenerife or the Pyrenees and feel perfectly equipped.

Build My OSTRO

COMFORT

Smoothness is an essential component of efficiency and speed. The OSTRO was designed for pro riders to use at Paris-Roubaix, the most brutal of the cobbled Classics and known as a breaker of bikes and riders. It’s a 260km race that averages around 45kph, so a bike this fast can make a huge difference. While British roads might not be as bad as pre-war cobbles, our rough surfaces require mitigation. In both scenarios, many riders in the past were left with no choice but to sacrifice aero for more comfortable options. Aero and comfort were seen as mutually exclusive.

The OSTRO rips up the old dogma with three key design features: it has huge 32mm tyre clearance, ultra-thin seat stays which absorb vibration, and the carbon layup is the result of scores of iterations to reach an exceptional degree of compliance for a frame with immense stiffness under power.

Ostro_Chrome

Key Features

To save weight and aero drag, and in line with customer wishes, the OSTRO is built for electronic groupsets only

Thread-fit BB standard gives a secure fit and makes maintenance easier

Ensuring every customer enjoys optimised handling characteristics, the OSTRO uses three different fork offsets across the size range compared to the industry standard of two

The mid-depth aero profile and lightweight seatpost is offered with a choice of 0 or 25mm setback

The OSTRO is compatible with the one-piece Black Inc Barstem as well as conventional separate bars and stems. When using separate components, the cables enter the frame below the stem

The handling and fit geometry of the OSTRO are both near identical to the O2 and O2 VAM, which makes it easy for the pros to switch between models and eliminates that issue when you’re choosing which Factor to buy

COLOUR OPTIONS

TDF LIMITED EDITION
FLICKER
CHROME
FACTOR RACING GREEN
SOHO MIX

RECENT BUILDS

Get inspired and check out the latest builds to roll through our workshop

Buy Now

Secure your new Factor OSTRO with a £500 Deposit (Fully Refundable)

  • Factor OSTRO VAM Frameset
  • Black Inc FORTY FIVE Wheels
  • Black Inc Integrated Barstem
  • Shimano Ultegra Di2 R8170
  • Available in: 2-4 Weeks
  • £8,300

SPECIFICATION & GEOMETRY

AStack
503

BReach
370

CSeat Tube Angle
74.5

DTT (effective)
511

EHT angle
71.7

FFork Offset
53

GTrail (@683OD)
57.1

HST
456

IBB drop
72

JFront Center
574

KFork length
373

LWheelbase
968

AStack
523

BReach
376

CSeat Tube Angle
74

DTT (effective)
527

EHT angle
72.5

FFork Offset
48

GTrail (@683OD)
57.3

HST
480

IBB drop
72

JFront Center
575

KFork length
373

LWheelbase
968

AStack
542

BReach
384

CSeat Tube Angle
73

DTT (effective)
550

EHT angle
72.5

FFork Offset
48

GTrail (@683OD)
57.3

HST
502

IBB drop
70

JFront Center
587

KFork length
373

LWheelbase
982

AStack
565

BReach
392

CSeat Tube Angle
73

DTT (effective)
566

EHT angle
73.3

FFork Offset
43

GTrail (@683OD)
57.5

HST
525

IBB drop
70

JFront Center
591

KFork length
373

LWheelbase
985

AStack
587

BReach
401

CSeat Tube Angle
73

DTT (effective)
582

EHT angle
73.3

FFork Offset
43

GTrail (@683OD)
57.5

HST
548

IBB drop
70

JFront Center
607

KFork length
373

LWheelbase
1005

AStack
611

BReach
409

CSeat Tube Angle
73

DTT (effective)
597

EHT angle
73.3

FFork Offset
43

GTrail (@683OD)
57.5

HST
570

IBB drop
70

JFront Center
622

KFork length
373

LWheelbase
1023

Geometry

SIZE:
49
52
54
56
58
61
AStack
503
523
542
565
587
611
BReach
370
376
384
392
401
409
CSeat Tube Angle
74.5
74
73
73
73
73
DTT (effective)
511
527
550
566
582
597
EHT angle
71.7
72.5
72.5
73.3
73.3
73.3
FFork Offset
53
48
48
43
43
43
GTrail (@683OD)
57.1
57.3
57.3
57.5
57.5
57.5
HST
456
480
502
525
548
570
IBB drop
72
72
70
70
70
70
JFront Center
574
575
587
591
607
622
KFork length
373
373
373
373
373
373
LWheelbase
968
968
982
985
1005
1023
VIEW SIZE GUIDE DOWNLOAD pdf

FRAME
TeXtreme®, Toray®, Nippon Graphite® Pitch-Based Fibre
FORK
OSTRO Wide Stance Fork
SEATPOST
Zero and 25mm setback available
BARSTEM
Black Inc VAM Reach 80mm, drop 125mm. Multiple stem lengths and bar widths available
HEADSET
CeramicSpeed 1-1/8" and 1-3/8" bearings
HEAD TUBE DIAMETER
1-1/8" upper and 1-3/8" lower
BOTTOM BRACKET
CeramicSpeed T47A Aluminium cups / CeramicSpeed bearings with Wheels MFG 24mm BBRight Reducers/Adapters
MAX TIRE CLEARANCE
32mm
WHEEL SIZE
700c
BRAKE TYPE
Disc
FRONT AXLE
12 x 100mm thru-axle
REAR AXLE
12 x 142mm thru-axle
CABLE ROUTING
Internal
FINISH/COLOURS
Factor Racing Green, Flicker, Gloss Carbon / Chrome, Soho Mix, Custom paint available
MANUFACTURER WARRANTY
Limited Lifetime Warranty
FRAME
TeXtreme®, Toray®, Nippon Graphite® Pitch-Based Fibre
FORK
OSTRO Wide Stance Fork
SEATPOST
Zero and 25mm setback available
BARSTEM
Black Inc VAM Reach 80mm, drop 125mm. Multiple stem lengths and bar widths available
HEADSET
CeramicSpeed 1-1/8" and 1-3/8" bearings
HEAD TUBE DIAMETER
1-1/8" upper and 1-3/8" lower
BOTTOM BRACKET
CeramicSpeed T47A Aluminium cups / CeramicSpeed bearings with Wheels MFG 24mm BBRight Reducers/Adapters
MAX TIRE CLEARANCE
32mm
WHEEL SIZE
700c
BRAKE TYPE
Disc
FRONT AXLE
12 x 100mm thru-axle
REAR AXLE
12 x 142mm thru-axle
CABLE ROUTING
Internal
FINISH/COLOURS
Factor Racing Green, Flicker, Gloss Carbon / Chrome, Soho Mix, Custom paint available
MANUFACTURER WARRANTY
Limited Lifetime Warranty

START YOUR JOURNEY

Contact our team today and let's start talking about your dream bike