The Saris Fluid 2 Turbo Trainer is the best-selling turbo trainer in America. The large, precision-balanced flywheel (with patented fan design) lets you easily customise each ride simply by shifting gears, just as you would outside. This design also helps keep your Fluid2 working better - longer. And thanks to the Saris built-to-last manufacturing process, the Fluid2 can help you conquer one goal after the next. The Fluid 2 comes with the Saris Clutch Knob which lets you get the perfect tyre to roller tension so you get the most out of each ride. If you want to use training apps like Zwift then you can add the Saris Speed sensor (sold separately) to give you basic connectivity. Features Fluid2 is the best-selling trainer in the USA. PowerTunedfor 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 tyre wear and slippage. Features clutch knob for perfect roller to tyre 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 andhas three settings for rear dropout spacing: 120mm, 130mm and 135mm. Trainer tyrerecommended. Compatible withvirtual training apps (with Speed Sensor – sold separately) All of our trainers are tested to the combined weight (rider and bike) of 300lbs. Optional thru-axle adapter available for142 x 12mmand148 x 12mmbikes.