Kurt Kinetic’s Road Machine 2.0 Fluid Trainer features a fluid-based unit for smooth, progressive resistance that matches your effort for a true outdoor simulation. With a 6.25 lb. flywheel and a sealed fluid chamber pushing back, you get a natural resistance feel and a lower operating temperature for consistency to 3000 watts and beyond. When it's time to store or transport the unit, simply fold up the legs and tuck it away. And, thanks to the 2 1/8-inch roller, tire wear is reduced significantly.