Factor Ostro Carbon SRAM Force XPLR AXS Gravel Bike

The Factor Ostro Carbon with SRAM Force E1 XPLR and an integrated power meter is a race-focused gravel bike built for riders chasing speed on mixed terrain, whatever the surface. Its TeXtreme, Toray, and Nippon Graphite pitch-based carbon fiber frame uses a zoned aero design, an aerodynamically shaped head tube up front paired with a lighter, more compliant rear end, resulting in a 950g frame weight and a measured 45mm tire clearance that lets it move from smooth gravel roads to rough double-track without swapping bikes. Every component on the build reinforces that intent. The SRAM Force E1 XPLR 1x13-speed groupset (44T crank, 10-46T cassette) pairs wireless shifting with a built-in power meter, Black Inc's Thirty Four carbon wheels and Integrated Aero Barstem handle the aerodynamics and ride feel, and CeramicSpeed bearings run throughout the headset, bottom bracket, and hubs to cut drivetrain friction. The frame also supports SRAM's Universal Derailleur Hanger (UDH), keeping it compatible with current and future wireless drivetrains. Who It's For • Gravel racers and fast group-ride riders who want an aero-optimized frame, ridden to a top-10 finish at the 2022 Unbound 200. • Riders who want a wireless 1x13 drivetrain with a power meter already integrated into the build. • Riders who need up to 45mm of tire clearance for mixed or rough gravel terrain. • Riders who value low-friction componentry (CeramicSpeed bearings) over the lowest price point. • Consider a different bike if you need 2x gearing, a suspension-equipped adventure setup, or tire clearance beyond 45mm for loaded bikepacking. What to Look For • Bottom bracket bearings are available for DUB, 24mm, or Ultra-Torque cranks, so confirm which matches your groupset before ordering. • Seatposts come in 0mm and 20mm setback, and saddle rail clamps in 7x7 or 7x9, both of which affect saddle fit and position. • The Integrated Aero Barstem has a fixed 80mm reach and 120mm drop, though multiple stem lengths and bar widths are offered, so a professional fit check will confirm sizing. Key Features Frame and fork: The OSTRO Wide Stance Fork and pitch-based carbon frame use a zoned aero strategy, concentrating aerodynamic shaping at the head tube, where airflow is cleanest, while keeping the rear of the frame focused on weight and ride quality. A 1.5" head tube (upper and lower) with CeramicSpeed SLT bearings supports precise steering. Drivetrain and braking: SRAM's Force E1 XPLR groupset delivers 1x13-speed wireless shifting with a 44T crank and 10-46T cassette, plus disc brakes with up to 160mm rotors front and rear. UDH compatibility keeps the frame open to future SRAM drivetrain updates. Wheels and tires: Black Inc's Thirty Four wheels use a 34mm depth and 25mm internal width, a hookless tubeless-ready rim, and CeramicSpeed hub bearings. Tire clearance is a measured 45mm. Cockpit: The Black Inc Integrated Aero Barstem adds a 7-degree flare for extra control in the drops, plus an integrated GoPro-style mount for a computer or camera. Rider Intent Summary • Biggest strength: A frame and component build purpose-built for gravel speed, with a top-10 finish at Unbound 200 as real-world proof. • Tradeoff: A 1x-only drivetrain and race-oriented geometry mean less versatility for heavy bikepacking loads. • What makes it different: An integrated power meter, CeramicSpeed bearings throughout, and a zoned aero frame design, combined in one build. Victory's Take We see the Ostro Carbon as one of the more complete race-ready gravel builds we carry. The aero details and CeramicSpeed spec are what our fit and service team gets asked about most, and if you're racing gravel, it's worth a test ride at Victory Bicycle Studio.