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Free Shipping $75+ | 30-Day Free Returns | Please Expect Shipping Delays
Free Shipping $75+ | 30-Day Free Returns | Please Expect Shipping Delays

Factor Ostro - Soho Mix


Superlight Aero Race Bike

The all-new Ostro is Factor’s most versatile road racing bike to date. Factor’s engineers have developed a racing machine that combines optimized aerodynamic features with superlight VAM carbon fiber materials to produce a state of the art machine that can literally do it all. Finally, an aerodynamic bike that doesn’t compromise on weight and delivers a smooth, fast and comfortable ride.

Available for Pre-Order now as a frameset or complete bike, please see build packages below.

Due to overwhelming demand of the new Factor Ostro, delivery times may vary. 

Contact for Estimated Lead / Delivery Time



There is no longer a need to choose between lightweight and aerodynamic. The all-new FACTOR Ostro offers a super lightweight, aerodynamic and comfortable ride capable of achieving victory in any circumstance. The OSTRO is an aero disc-brake frame which weighs just 780g (painted, size 54, Flicker design). For using the very best materials and reaching such a low weight for its class, the OSTRO carries Factor’s VAM designation. In terms of comfort, the Ostro incorporates wider tire clearance (up to 32c wide), ultra-thin seat stays and carbon fiber layup that dampens road vibrations that excels on pavement or cobblestones. The Ostro is your go-to choice for flying down 9W at blistering speeds and ascending Bear Mountain with supreme efficiency.

  • Tire Clearance up to 32mm wide
  • Frame Weight: 780 grams (Size 54 with Flicker Black paint)
  • Integrated Black Inc Carbon Fiber Bar / Stem
  • Fully Integrated Internal Cable Routing
  • Black Inc. 45mm Carbon Fiber Wheels (groupset packages)
  • Hydraulic Disc Brakes (groupset packages)
  • Integrated Carbon Headset
  • Selle Italia SLR Boost Saddle
  • Ceramic Speed headset and bottom bracket
  • 5-year limited lifetime warranty
  • $5,499 - Frameset: (includes Black Inc. carbon handlebar/stem, carbon seatpost, CeramicSpeed BB & headset)
  • $8,199 - Complete Build: with SRAM Force Etap AXS electronic Groupset, Black Inc. Carbon Fiber Wheelset (45mm depth)
  • $10,099 - Complete Build: with SRAM Red Etap AXS electronic Groupset, Black Inc. Carbon Fiber Wheelset (45mm depth)
    *prices are subtotals and exclude tax, free shipping

    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 Ostro Framesets in most cases will ship within 3 months 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. Estimated lead time for full builds with SRAM components are 5 months from time of purchase. Estimated lead times for full builds with Shimano components are 6 - 8 months from time of purchase. Please be aware that these lead times may extend longer than the estimates provided.

FACTOR Ostro Specifications
Brand Model Specification
Frame Factor Ostro TeXtreme®, Toray®, Nippon Graphite Pitch-Based Fiber
Fork Factor Ostro Wide Stance Fork Disc
Seat Post Black Inc. Ostro Zero and 25mm setback available
Barstem Black Inc. Ostro 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 32mm
Wheel Size 700c
Brake Type Disc
Front Axle 12 x 100mm thru-axle

FACTOR Ostro Geometry Chart
Size 49 52 54 56 58
Stack 503 523 542 565 587
Reach 370 376 384 392 401
Seat Tube Angle 74.5 74 73 73 73
Top Tube 511 527 550 566 582
Head Tube Angle 71.7 72.5 72.5 73.3 73.3
Fork Offset 53 48 48 43 43
Fork Trail 57.1 57.3 57.3 57.5 57.5
Seat Tube Length 456 480 502 525 548
BB Drop 72 72 70 70 70
Front Center 574 575 587 591 607
Fork Length 373 373 373 373 373
Wheelbase 968 968 982 985 1005

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