The most powerful and accurate Saris direct drive trainer to date, the H4 sets a new trainer standard with industry leading high-inertia ride feel, and all-new 1% power accuracy. Experience the world's most challenging climbs from the comfort of your home with 25% simulated incline grade and be ready to put the hammer down on high-octane sprints up to 2,300 watts. The H4 continues Saris' legacy of exceptional quality and durability with an enhanced cast aluminum housing made in America's heartland