F-Si

Brand: Cannondale

The F-Si is Cannondale's cross-country hardtail, built for XC racing and lightning starts on the World Cup circuit. Its signature is the Ai (Asymmetric Integration) system: the entire rear triangle and drivetrain are offset 6 mm to the right, which allows ultra-short chainstays (427 mm) while keeping a stiffer rear wheel thanks to balanced spoke tension on both sides. The 2019 carbon generation — a BallisTec Hi-MOD frame of barely 900 g, at the time the lightest mountain bike the brand had ever produced — introduced the single-sided Lefty Ocho fork with a standard tapered steerer, paired with a calmer geometry (69° head angle) for more composure on fast descents. An emblem of Cannondale's single-sided philosophy, the F-Si has carried its riders onto international XCO podiums. Reference geometry: size L.