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Factor Ostro - Black/Chrome

Regular price $7,299.00
Regular price Sale price $7,299.00

Groupset: Rolling Chassis (includes Frameset + Black Inc FORTY FIVE Wheelset)
Size: 49 (Recommended rider height 5'0" - 5'3")


Please inquire for a lead time as availability changes daily. Email Select groupsets may also be available for full build options not listed above.

All Around Carbon Road Bike

This All-Around Lightweight Carbon Road Bike Factor O2 V.A.M. is the perfect companion for your cycling adventures, near and far. Dance up the climbs on this smooth, versatile, and incredibly lightweight road machine. Bear Mountain never rode so good. Now featured the 2021 upgraded frameset with full internal cable routing.



The road to the sky up Bear Mountain never felt so good. The O2 V.A.M. is Factor’s lightest road bike ever produced.

Lightweight need not arrive at the expense of ride dynamics and quality. Despite its status as Factor’s lightest production bike, O2 V.A.M. remains stiff and responsive under power, forever shattering the status quo of ultralight performance.

Key Features

  • Tire Clearance up to 30mm wide
  • Fully Integrated Internal Cable Routing
  • SRAM Hydraulic Disc Brakes
  • Integrated Carbon Headset
  • Svelte Fork
  • Frame Weight: 677 grams (size 54, unpainted, paint adds 20 - 45g)

Have questions? Chat with us or email.


Factor is a brand rooted in racing, performance and a commitment to constant innovation through advanced engineering. Factor's heritage stems from carbon fiber engineering and production for the world's top motorsports companies. Factor is now based in Taiwan and meticulously designs, engineers and manufactures all of its bicycle frames and parts in its very own factory, refusing to compromise on performance or quality control.

Factor is led by former professional bike racer and engineer Rob Gitelis, who moved to Taiwan from the United States following his racing career. Prior to his work at Factor, Rob manufactured the highest-spec'd bicycle frames for some of the world's most well-known labels. He is now devoted to producing bicycles under the Factor label for riders and professional racers across the globe. Factor's sister brand, Black Inc produces some of the highest quality wheels and cockpits on the market under the same principles as Factor. Factor and Black Inc are proud to sponsor UCI World Tour team Israel Startup Nation, led by Chris Froome.


Factor is currently experiencing overwhelming demand on its bikes. Factor O2 Framesets in most cases will ship within 3 weeks of placing your order, however please be aware that lead times may extend longer than that. Supply of complete build bikes are incredibly limited at this time due to the availability of groupsets and components. Please email for more info.

Please note: images are for illustration purposes only. Each build is spec'd for the customer specifically and may differ from product images shown, without notice. For questions regarding specific build specs, please contact us.

Brand Model Specification
Frame Factor VAM TeXtreme®, Toray®, Nippon Graphite Pitch-Based Fiber
Fork Factor VAM Svelte / Svelte Disc
Seat Post Black Inc. VAM Zero and 25mm setback available
Barstem Black Inc. VAM Reach 80mm, drop 125mm. Multiple stem lengths and bar widths available
Headset Ceramic Speed 110 Series 1-1/8" bearings
Head Tube Diameter 1-1/8 upper and 1-3/8 lower
BB CeramicSpeed PF4630 Aluminium cups / CeramicSpeed bearings with Wheels MFG 24mm BBRight Reducers/Adapters
Max Tire Clearance 30mm
Wheel Size 700c
Brake Type Disc
Front Axle 12 x 100mm thru-axle
Geometry Chart
Size 49 52 54 56 58
Stack 503 523 542 565 587
Reach 370 376 384 392 401
Seat Tube Angle 74 73 73 73 73
Top Tube 515 534 550 565 580
Head Tube Angle 71.3 71.6 73.1 73.3 73.3
Fork Offset 53 53 43 43 43
Fork Trail 60 58 59 58 58
Seat Tube Length 455 480 503 526 548
BB Drop 75 70 70 70 70
Front Center 576 587 577 590 605
Chainstay Length 406 406 406 406 410
Wheelbase 970 982 972 985 1005
Stand Over Height 727 750 772 794 820

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