The Booster is the most powerful basic trainer and can generate high resistance at low speeds. If you set the handlebar resistance lever to a high position you have to exert a lot of force while advancing slowly, just like when you tackle a steep climb. This makes the Booster highly suitable for power based workouts. Manual Resistance Control The Booster is controlled by a lever on your steer, allowing you to set the resistance as required. The higher the position, the more resistance. 1050W power, 10 positions. Silence Boost The Booster is the only basic trainer with a closed resistance unit, highly reducing noise. Intervals & Power Workouts The powerful magnetic brake of the Booster enables intense interval sessions and power based workouts. Realistic Pedal Stroke The Booster features an actual flywheel which generates a realistic road feel. Stable & Robust 675mmx650mm footprint Multifunctional Front Wheel Support The Skyliner is a front wheel support that raises the front wheel for a natural cycling position and increased stability. It also serves as a handle to carry the trainer. Click 'n Ride The bike is fixed in the trainer easily by two simple clicks. Unique Dual Material Roller The roll that places the resistance on your rear wheel is made from two materials: a hardened steel sleeve with a soft core of elsastogel. The steel sleeve prevents wear of the trainer, while the elastogel absorbs vibrations to reduce noise. Virtual Power Train with the Tacx Training app, Tacx Cycling app, Zwift or TrainerRoad on the basis of virtual power using the Tacx speed and cadence sensor! This transmits your speed and cadence wirelessly via ANT+ or Bluetooth Smart to your tablet or smartphone, so you can also use these popular training applications with a basic trainer. FEATURES Type of trainer: Basic trainer with magnetic brake Magnets: 2x8 Permanent ferrite magnets Transmission: Roller, 30 mm Electrical requirements: No mains voltage required Power indicator: None Connection indicator (ANT/BT): None Firmware upgradable: No Suitable bikes: Race, Tri & MTB , if necessary with axle skewer Suitable axles: Width of rear fork: Race 130 mm, MTB 135 mm. Adapters for other widths available Supplied with: Front wheel support , Quick release for road bikes and mountain bikes (5mm) SPECIFICATIONS Max. power: (40 km/h) 1050 Watt Max. incline: n.a. Simulation of descent: No Max. torque: 17 Nm Max. brake force: 50 N Flywheel: Actual of 1,6 kg Mass inertia: 9.18 kg (20.2 lbs) Calibration: n.a. Footprint: (lxw) 675 x 650 mm (26.6 x 25.6 in) Height: 410 mm (16.1 in) Dimensions when folded: 565 x 410 x 245 mm (22.2 x 16.1 x 9.65 in) Weight: 8.53 kg (18.8 lbs) Article number: T2500 DATA OUTPUT AND CONTROL Wireless communication: None Control by: Handlebar resistance lever with 10 positions