GO AHEAD, SPIN YOUR WHEELS. If it's important to you to make every workout count, the Fluid2 trainer is the most valuable weapon you can add to your indoor training arsenal. Our engineers designed the Fluid 2 to capture real road feel through the use of a 2.75 lb individually precisionbalanced flywheel for more momentum and stability of your rear wheel. We've also adjusted fluid levels for better resistance and improved the position of sealedcartridge bearings for better inertia and an ultra quiet ride that ensures increased wattage as you increase your speed. And just like riding outside, simply shift gears to increase or decrease resistance. When you spin your wheels on the Fluid2 it feels like you're actually getting somewhere. The Power Training Kit comes with the PowerTap PowerCal Power Meter and a Joule cycling computer so you can train with power. The PowerCal is the world's first ever power meter calculated from heart rate. The algorithms in PowerCal translate heart rate data into the vernacular of power based training watts, kilojoules, peak power, etc. Use the PowerCal with the included CycleOps Speed Sensor, which can be configured to detect speed or cadence. The Joule is the perfect training companion offering 18 metrics to help you measure your progress including power, heart rate, speed, distance, and altitude.