Sunny Health & Fitness Smart Pro Indoor Bike – 40 LB Flywheel, Belt Drive

Sunny Health & Fitness Smart Cycling Exercise Bike (Black) – $299.99 (17% off, was $359.99) · 4.3/5 · 5,410 ratings · Amazon's Choice · 50+ bought last month Belt-drive indoor cycling bike with a 40 lb chrome flywheel for smooth, stable momentum, free access to the SunnyFit app (1,000+ trainer-led workouts, no membership fee), micro-adjustable felt-pad resistance with a quick-stop push-down knob, and an adjustable multi-grip handlebar plus two-way seat (fits 29"–41" inseam). Max user weight 275 lbs. Also in Grey. Reviews are strong at 4.3/5 (65% five-star), with many long-term reviewers (years of heavy use, including commercial gym settings) praising the sturdy, gym-quality build at a fraction of the price of name-brand spin bikes — quiet belt drive, smooth ride standing or seated, and minimal maintenance. Fair caveats: the stock seat is widely considered uncomfortable — most serious users swap it for a gel seat cover. No bottle holder is included (easy aftermarket fix). A few report a squeaky flywheel over time, fixed with a drop of bike/treadmill oil on the brake pads. No odometer, since this is a stationary cycling bike, not a distance tracker — fine for time-based workouts but a downside if you wanted mileage stats.