The Exxentric Kbox4 Pro System is engineered for top-tier performance and versatility. Built with a powder-coated aluminum chassis and hardened carbon steel details, it offers a spacious footprint and robust weight to support progressive resistance training. Featuring an advanced inertia range up to 0.420 kgm² (with optional knob), built-in kMeter II feedback system, and compatibility with a wide selection of flywheels, the Kbox4 Pro enables variable and unlimited resistance through innovative flywheel technology. Perfect for elite athletes and trainers aiming for optimal results.