Spirit Fitness 4.0U Upright Bike

The Spirit Fitness 4.0U Upright Bike is a versatile, self-generating upright exercise bike designed for controlled, comfortable, low-impact cardiovascular training. Built with a commercial-grade steel frame and 40 levels of resistance, the 4.0U allows users to easily adjust workout intensity to match their fitness or rehabilitation goals.

Its cordless, self-powered design provides flexible placement without requiring an external power outlet. A fully adjustable high-density foam seat, oversized fast-latching pedals, hand pulse sensors, cooling fan, tablet holder, and multiple workout programs add comfort and convenience to every session.

With a 440 lb maximum user capacity and a recommended user height range of 4'10" to 6'6", the Spirit Fitness 4.0U Upright Bike accommodates a wide range of users.

Premium Features

40 Levels of Resistance

The 4.0U provides 40 resistance levels, allowing users to select a comfortable starting intensity and progressively increase the challenge as their fitness improves.

Self-Generating Power

The self-generating power system eliminates the need for an external power outlet, providing convenient cordless operation and greater flexibility when positioning the bike.

Adjustable High-Density Foam Seat

The high-density foam seat adjusts fore, aft, and vertically, helping users find a comfortable riding position and appropriate pedal alignment.

Multiple Workout Programs

Users can choose from 11 preset program options, including Manual, Hill, Plateau, Interval, Custom, VO2, METs, heart-rate programs, and HR Auto Pilot.

Heart Rate Monitoring

Built-in hand pulse sensors provide convenient heart-rate monitoring, while the console supports Bluetooth, ANT+ FTMS, and G-FIT heart-rate connectivity. Wireless monitoring devices are sold separately.

Comfortable Workout Design

A built-in 3-speed cooling fan, tablet holder/reading rack, oversized fast-latching pedals, and transportation wheels provide additional convenience during and after workouts.

Specifications

Specifications are based on the manufacturer's current 4.0U product information.

Why Choose the Spirit Fitness 4.0U Upright Bike?

The Spirit Fitness 4.0U combines low-impact cardiovascular exercise, adjustable resistance, user comfort, and flexible programming in a compact upright-bike design.

Its 40 resistance levels make it suitable for a variety of training intensities, while self-generating power allows the bike to operate without an external power connection. The adjustable seat and broad recommended user-height range also make it practical for facilities serving multiple users.

The 4.0U is particularly well suited to environments where users need a controlled cycling experience, including rehabilitation and fitness-focused settings.

Muscles Worked

Quadriceps

The quadriceps are heavily involved in the downward portion of each pedal stroke, helping extend the knee.

Hamstrings

The hamstrings contribute throughout the cycling motion, particularly during the transition and upward portion of the pedal stroke.

Glutes

The gluteal muscles assist with hip extension and contribute to power production during cycling.

Calves

The calf muscles help stabilize the ankle and contribute to the continuous pedaling motion.

Hip Flexors

The hip flexors assist in bringing the leg upward during each cycling revolution.

Benefits of the Spirit Fitness 4.0U

Low-Impact Cardiovascular Exercise

Upright cycling provides an effective cardiovascular workout while placing less impact on the joints than many weight-bearing cardio activities.

Adjustable Workout Intensity

With 40 resistance levels, users can select an appropriate challenge and gradually increase resistance as their conditioning develops.

Comfortable Positioning

The adjustable high-density foam seat helps accommodate different body sizes and allows users to establish a more comfortable cycling position.

Workout Variety

Multiple preset programs provide different training formats, helping users vary their workouts rather than relying solely on manual cycling.

Progress Tracking

The display provides workout information and supports heart-rate monitoring, helping users track key aspects of their exercise session.

Flexible Placement

Because the bike generates its own power, it does not require an external electrical connection for operation.

Ideal For

Rehabilitation Facilities

The controlled resistance, adjustable positioning, heart-rate monitoring capabilities, and upright cycling motion make the 4.0U well suited for rehabilitation-oriented environments.

Physical Therapy Settings

The adjustable seat and broad range of resistance levels allow exercise intensity and positioning to be adapted to different users.

Medical and Wellness Facilities

The durable frame, self-generating operation, and user-friendly programming make the 4.0U a practical addition to facilities serving multiple users.

Fitness Centers

The commercial-grade steel frame and 440 lb user capacity provide a robust upright-bike option for shared fitness environments.

Home Gyms

Its relatively compact footprint, cordless operation, adjustable seat, and wide range of resistance levels also make the 4.0U suitable for users seeking a professional-style upright bike for home training.

Delivery, Assembly & Installation Options

Curbside Delivery

Fast and economical delivery to your facility entrance.

White Glove Delivery & Setup

Inside delivery, professional assembly, testing, and packaging removal. Optional old equipment removal available.

Commercial & Multi-Unit Installation

Ideal for large projects and multi-unit facilities. Includes layout planning and full equipment calibration.

Financing Available

Call 1-800-875-9145 For Assistance!

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