Ostro Gravel SRAM Red w/ Power Meter

Factor offers the Ostro Gravel in a focused range of premium builds, all centered around SRAM electronic drivetrains. The lineup splits between the Force and Red tiers, with each level offering a choice between a standard 12-speed setup or the gravel-specific XPLR configuration. Every complete build includes a Quarq power meter integrated into the crankset, adding clear value for riders focused on structured pacing and race efforts.

Across the entire range, the supporting component specification remains identical and exceptionally high-end. Every model rolls on Black Inc Thirty-Four carbon wheels, which feature a 34mm depth and a wide hookless rim profile designed to support modern gravel tires. Factor also equips every build with CeramicSpeed bearings throughout, including the T47A threaded bottom bracket, the wheel hubs, and the solid-lubrication headset bearings.

Because the frame, cockpit, wheels, and bearing upgrades are consistent across the board, the price jumps between models are dictated entirely by the shift from SRAM Force to the lighter SRAM Red components. While the entry price is undeniably high, the inclusion of power meters, premium carbon wheels, and ceramic bearings across all builds makes the specification highly competitive within the top-tier racing market.

Reviewers consistently characterize the Ostro Gravel as a remarkably fast, highly efficient race bike that demands compromises in comfort. On smooth dirt and tarmac, the bike excels. Testers praise its immediate acceleration, noting that it feels "taut and lithe and responsive" (Cycling News) when putting power through the pedals. The aerodynamic shaping and rigid chassis help riders maintain high speeds with less effort, imparting a "sense of ease when going fast" (Cyclist Magazine) that closely mimics a dedicated aero road bike.

However, that same structural rigidity translates to a punishing ride on rougher terrain. Multiple reviewers describe the frame as "overly firm" (Cyclist Magazine), pointing out that the deep-section aero seatpost offers almost no rear-end compliance. When the route turns to rocky doubletrack or technical singletrack, the ride quality can quickly become "stiff and harsh" (Gravelcyclist), leading to increased body fatigue over long distances.

The consensus positions the Ostro Gravel as a highly specialized tool. It rewards fit, experienced riders who prioritize outright speed on well-graded courses, but it is less suited for those seeking a forgiving ride for multi-day bikepacking or relentlessly bumpy trails.