Summary

Upright exercise bike with 16 resistance levels, self-powered console, and 22 workout programs for home or light commercial use.

Overview

The FMI Fitnex B55SG Upright Exercise Bike supports low impact cardio in a compact footprint. The steel frame and 300 pound weight limit support daily riding in home gyms or shared fitness rooms. Electronically controlled ECB magnetic resistance lets you fine tune intensity from light spins to stronger efforts. The self-powered system drives the backlit LCD console, so you track time, speed, RPM, watts, calories, and resistance level without a power outlet. With 22 workout modes, you follow structured sessions or ride in manual mode on your schedule.

Set Components

• Fitnex B55SG upright exercise bike
  
• Assembly hardware
  
• User manual

Installation and Setup

• Place the bike on a stable, level floor
• Leave clear space around the 41 by 24 inch footprint
• Check ceiling height allows safe use with rider height plus the 56 inch frame
• Assemble the bike with two adults following the user manual
• Tighten all fasteners and inspect frame, seat post, handlebars, and pedals
• Adjust the seat height so your knee has a slight bend at the bottom of the stroke
• Roll the bike to its final spot with the transport wheels
• Test pedal motion, resistance changes, and console display before first use

Operation and Maintenance

• Inspect frame, seat post, pedals, straps, and hardware before each ride
• Confirm the seat is locked at the chosen height
• Climb on carefully, place feet in pedal straps, and start pedaling
• Pedal to power the self-generating console and select a workout mode
• Adjust resistance across 16 levels to match your fitness goal
• Grip the contact heart rate sensors for basic pulse feedback if desired
• Watch time, distance, speed, RPM, watts, calories, and level on the display
• Step off only after the pedals stop fully
• After each workout, wipe the frame, seat, and handlebars with a soft cloth
• Follow the maintenance schedule in the manual for inspection and service
• Arrange periodic checks by a qualified technician for long term use

Key Features & Benefits

Features

• Steel upright frame with compact footprint
• Electronically controlled ECB magnetic resistance with 16 levels
• Self-powered drive with no external power cord
• 5.5 inch backlit LCD console
• Twenty two workout modes including preset, recovery, user, HRC, and watt control
• Vertical seat adjustment for rider fit
• Self balancing pedals with adjustable straps
• Contact heart rate sensors with wireless receiver support
• Water bottle holder, towel rack, and accessory storage
• Front transport wheels for easier repositioning

Benefits

• Ride in a natural upright position that fits most home or office spaces
• Match resistance to warmups, steady cardio, or higher intensity intervals
• Place the bike away from wall outlets with the self generating system
• Track time, distance, speed, RPM, watts, calories, and level during every ride
• Follow structured programs for cardio, fat burn, or heart rate guided sessions
• Adjust the seat height for proper leg extension and comfort
• Keep feet secure through each pedal rotation
• Store hydration, towel, and accessories within easy reach
• Move and position the bike more easily using built in wheels

Specifications

• Frame: steel construction
  
• Bike Type: upright stationary bike
  
• Resistance System: ECB magnetic, electronically controlled
  
• Resistance Levels: 16
  
• Power System: self generating, no external power cord
  
• Watt Output Range: 30 to 350 W (30 to 90 RPM)
  
• Maximum User Weight: 300 lb (136 kg)
  
• Dimensions: 41" L × 24" W × 56" H

Console and Display

• Display: 5.5 inch backlit LCD console
  
• Metrics: time, distance, RPM, pulse, resistance level, watt output, speed, calories
  
• Programs: 22 total modes including 12 preset, 1 recovery, 4 user, 4 HRC, 1 watt control
  
• Heart Rate: contact sensors on handlebars with wireless receiver capability

Included Components

• Fitnex B55SG upright bike
  
• Assembly hardware
  
• User manual

Disclaimer

For general fitness use only. Not medical equipment. Heart rate and calorie readings are estimates and not for diagnosis or treatment. Speak with a healthcare professional before starting any exercise plan, especially if you have heart, blood pressure, joint, balance, respiratory, or metabolic conditions, recent surgery, or pregnancy. Stop exercise at once if you feel chest pain, shortness of breath, dizziness, faintness, or joint pain. Use within the 300 lb weight limit, assemble correctly, lock the seat before riding, and follow all safety and maintenance directions in the user manual.