A cycling trainer. Better health. Faster splits. More me-time. Whatever your goals may be, the Fluid² helps you get the most out of each indoor training ride. The large, precision-balanced flywheel (with patented fan design) lets you easily customize each ride simply by shifting gears, just as you would outside. This design also helps keep your Fluid² working better – longer. And thanks to our built-to-last manufacturing process, the Fluid² can help you conquer one goal after the next. Specifications: Fluid² is the best-selling trainer in the USA; PowerTuned for optimal road-like feel; Fluid resistance unit provides a quiet and consistent ride; Noise level at 20 mph is super quiet 64-68 decibels; Large, individually precision-balanced flywheel allows for improved road-like feel; Self-cooling mechanisms including a patented fan design keeps the unit performing better, longer; Eccentric leveling feet allow for easy adjustment on uneven surfaces; Comes on the CycleOps foldable Classic frame with spring loaded, bolt-action lever; Precision-machined alloy roller reduces tire wear and slippage; Features clutch knob for perfect roller to tire tension each ride; 2'' resistance unit roller allows for 650b, 700c, 26'', 27'' and 29'' wheel sizes – up to a 2.0 tire; This trainer is designed to fit common road and mountain bike frames with included steel quick release skewer and has three settings for rear dropout spacing: 120mm, 130mm and 135mm; Trainer tire recommended; Compatible with virtual training apps; All of our trainers are tested to the combined weight (rider and bike) of 300 lbs; Optional thru-axle adapter available for 142x12mm and 148x12mm bikes.