The Saris(R) Fluid 2 Smart Equipped Bike Trainer is the ideal setup for budget-conscious athletes that want to join fun, virtual communities without a traditional smart trainer. It's easy to connect with other athletes by installing the magnetless speed sensor on the rear wheel of your bike once mounting it to the Fluid 2 trainer. You'll be connected and ready to sweat! FEATURES: Compatible with indoor cycling apps such as Zwift, Peloton, or Rouvy (separate subscription required) Formerly branded as CycleOps Fluid^2 Smart Equipped 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 is tested to the combined weight (rider and bike) of 300 lbs. Dual-band magnetless speed sensor Designed to create an optimal road-like feel Fluid resistance unit provides a quiet and consistent ride Noise level at 20 mph is a 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 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 Trainer tire recommended Optional thru-axle adapter available for 142x12mm and 148x12mm bikes ANT+ USB and BlueGiga USB sold separately