• Versatile indoor bicycle trainer with leak-proof magnetic drive system and automatic resistance changes.
• 6.25-pound flywheel offers a realistic, 15-second coastdown from 20 mph.
• Measurable, repeatable workload with an authentic road feel.
• Extra stable platform--even for stand-up riding.
• Fits 22 to 29-inch wheels; unconditional lifetime warranty; lifetime c replacement policy.

As much as we love the idea of having a trainer that allows our bike to feel like it's moving under us, having a trainer that's compact and easy to travel with is hugely important. With the Road Machine Fluid Trainer, Kinetic by Kurt offers the same fluid resistance unit from their Rock and Roll Trainer and have it attached to a lighter, more compact frame.The Road Resistance Unit is an impressive feat of engineering. It uses a 6.25-pound (2.84kg) flywheel and a completely sealed fluid resistance unit. Together, they give you a consistent road-like feel and resistance curve. The tire roller is made of stainless steel and is 2.5in (6.35cm) in diameter, which is a good bit larger than much of the competition. The larger roller means less wear on your tire and it reduces the temperature of the spinning elements.The resistance unit is unique as it's made of two parts. The first is the driver made of a small flywheel embedded with six rare-earth magnets. The other half is a completely sealed cast-aluminum fluid chamber that is bolted to the housing containing the driver. The fluid chamber contains an impeller with corresponding magnets. As you ride, the magnets in the driver spin the impeller through medical-grade silicone fluid to provide the resistance. And since there is no driveshaft entering the fluid chamber, the Kinetic design eliminates a common design weakness of most fluid-resistance units.Of course, the system builds heat; your energy has to go somewhere (in this case friction). However, the fluid acts as a coolant and the chamber has 80 cooling fins on the outside that act like radiator fins. It's impossible to overheat the chamber or reach a point where performance is diminished. The silicone fluid retains its physical properties, even up to the normal operating temperature of 325? F when riding 25mph.There are several benefits to this system.