CycleOps Fluid 2 Indoor Bicycle Trainer

"Power Band" Technology allows distinct resistance level changes without reaching to a lever on the unit. Resistance level varies automatically based on cadence and wheel speed directly by using bike's own gears. Cooling mechanism increases life of resistance unit (patent pending). Power varies from less than 209 watts to over 725 watts (at 22.5 mph). Ideal for hitting and maintaining specific heart rate targets. Patented design gives quiet ride.

CycleOps Fluid 2 Indoor Bicycle Trainer Features

Infinite resistance curve ensures increased wattage as you increase speed
Power band technology offers a wide resistance range
New larger flywheel delivers twice the inertia for a road-like feel
Trainer is a great way to keep your legs in tip-top condition during the off season