The Factor Ostro VAM Shimano Ultegra 2026 bike we’re featuring here at Escapa is lighter, faster, and unbeatable. Now 250 grams lighter and 7 watts faster, with optimized Black Inc 48|58 wheels, it redefines responsive riding with unmatched aerodynamic efficiency.
The goal was to create the lightest aerodynamic bike in the professional peloton. The OSTRO VAM is a bike that can compete on any terrain. It’s ready to win sprints, conquer cobbled classics, and tackle climbs alongside the best.
NEW BLACK INC 48|58 WHEELS
The new Black Inc 48|58 wheelset was designed to complement the new OSTRO VAM and follows in the footsteps of the 28|33 wheelset developed for the O2 VAM. The differentiated rim depths of 48 mm in the front and 58 mm in the rear were chosen to deliver exceptional aerodynamic performance while improving stability in adverse wind conditions thanks to the shallower front rim. The profile is optimized for 28 mm tires, with an internal rim width of 23 mm and a continuously variable curvature that enhances crosswind performance and provides a predictable ride.
The extremely lightweight and strong carbon fiber spokes, paired with new high-flange hubs, significantly improve responsiveness and help keep the weight down to an incredible 1250 g, even with Tubeless tires. The rims feature a mini-hook that reduces weight and allows for compatibility with clincher tires.
Super-thin Aero seatpost
The seatpost has a slim 15 mm diameter, taking full advantage of the latest UCI regulations. Its profile is the result of an intensive study of its interaction with the chaotic airflow around the rider’s legs and a tireless R&D process. First, simulation tests were conducted with incremental iterations, followed by rapid prototyping of the optimal shapes in the wind tunnel to achieve peak performance. The new, slim seatpost is made possible by relocating the Shimano Di2 battery housing inside the seat tube and mounting it from behind the bottom bracket. This has the added benefit of eliminating the need to remove the seatpost to access the battery, reducing the risk of misalignment that can lead to incorrect height, slippage, or damage from over-tightening.
ULTRALIGHT SEATPOST CLAMP
The new push-type seatpost clamp has been relocated to the rear of the seat tube, where it distributes force over a wide surface area to provide a very secure hold with low tightening torque, allowing for a very lightweight clamp and a drastic reduction in seat tube width. This design has moved the battery housing to the bottom bracket, making it more accessible and convenient.
T47A BB Ceramic Bottom Bracket Veloce
The T47 standard for threaded bottom brackets ensures a secure fit, easy maintenance, and contributes to exceptional power transfer. Rapido Ceramicspeed bearings guarantee maximum efficiency.
Black Inc Integrated Aero Handlebar Stem
The handlebar is the benchmark for aerodynamic cockpits, combining cutting-edge aerodynamics with refined ergonomics and lightweight construction. Its highly developed shape, with 30 mm drops, improves control and significantly reduces aerodynamic drag between the bike and the rider.
Integrated Aero Bottle Cages
The OSTRO VAM features innovative, location-specific bottle cages integrated into the frame’s aerodynamics. The down tube bottle cage directs airflow from the down tube toward the bottle, neutralizing drag when a bottle is added to the bike. The seat tube bottle cage reconnects the airflow to the seat tube and is so effective that the bike is faster with the bottle cage mounted and empty than without it, making it perfect for the final stretch of professional races when the second bottle has been discarded.
Faster. Faster and faster.
Everything we knew about ultra-fast bikes was just the starting point. Using the most advanced computational modeling tools, the new OSTRO VAM achieves unthinkable improvements in aerodynamic performance.
Compared to the previous model, after 40 km, the new OSTRO VAM is a speck in the distance. Compared to its rivals, it’s practically invisible. We focused on refining the front end of the bike, where we could have the greatest influence on airflow. Through a Rapid Iterative Design process, we ran simulations on dozens of head tube profiles, considering every transition and surface on the frame. The result is a truly aerodynamic profile along the frame’s waterline. Subsequent wind tunnel testing confirmed that the new OSTRO VAM outperforms the competition.
