Introducing the Tacx Booster Ultra High Power Folding Magnetic Trainer. Prepare yourself in a professional manner and get your body in top condition with the Booster, the top model of the Tacx basic cycle trainers. Even at low speed the powerful magnetic brake generates high resistance; the maximum resistance is 1050 Watt. This makes the Booster highly suitable for simulating climbs and for interval training with short, intense sprints. The handlebar resistance lever allows you to set the level of resistance by selecting one of ten different positions. The brake is easy to assemble so you can get started straight away. Used across the world by professional athletes, you know you trust the Booster to do the job.