FMI Fitnex B55SG Upright Bike | Self-Powered | 16 Resistance Levels | LED Display | 300 lb Capacity

$999.00

Description
Fitnex/Steelflex Warranty Info

Description

Commercial-grade upright bike with 16 resistance levels, self-powered system, LED display, and ergonomic seat. Ideal for home or light commercial use.

The FMI Fitnex B55SG Upright Bike blends commercial durability with home-friendly design.
Engineered for smooth, quiet performance, it delivers a full cardio workout without requiring external power—perfect for home gyms, hotels, clinics, and light commercial fitness spaces.

Key Features
• Self-Generating Power System: No need for outlets—operates entirely from user motion.
• 16 ECB Resistance Levels: Adjust intensity seamlessly for any fitness level or goal.
• Heavy-Duty Crank System: Ensures stability and smooth pedaling during intense sessions.
• Comfort-Contoured Seat: Fully adjustable for proper posture and lasting comfort.
• Heart Rate Monitoring: Built-in contact sensors and wireless compatibility.
• Multi-Window LED Console: Displays real-time stats including time, distance, RPM, watts, speed, calories, and heart rate.
• Quiet Magnetic Resistance: Smooth and silent operation for home or shared environments.
• Integrated Transport Wheels: Move or store the bike easily.
• Compact Design: Space-saving frame fits seamlessly into apartments, offices, or studios.

Specifications
• Display: 5.5″ backlit LCD console
• Display Feedback: Time, Distance, RPM, Pulse, Level, Watt, Speed, Calories
• Programs: 22 total (12 Preset, 1 Recovery, 4 User, 4 HRC, 1 Watt Control)
• Resistance Levels: 16
• Resistance System: ECB (Eddy Current Brake) magnetic resistance
• Power Requirement: Self-generated
• Watt Output: 30–350W (30–90 RPM)
• Seat Adjustment: Vertical adjustable comfort seat
• Pedals: Self-balancing with adjustable straps
• Frame: Heavy-duty steel
• Transport Wheels: Yes
• Max User Weight: 300 lbs (136 kg)
• Dimensions: 41″ L × 24″ W × 56″ H
• Special Features: Integrated water bottle holder, towel rack, and accessory storage
• Warranty: 10 years frame, 2 years parts, 1 year labor

In the Box
• Fitnex B55SG Upright Bike
• Assembly hardware
• User manual

Fitnex/Steelflex Warranty Info

Fitnex Cardio Home Warranty : Lifetime frame, 7 year parts, 2 year labor, 10 year treadmill motor

Run belt, run deck, handle bar grips, seats, plastic covers all have a 1 year limited warranty

X5 Bike Warranty:

5 year frame, 6 months on pedals and saddle, 1 year on all other parts, 1 year labor

XE5 Elliptical Warranty:

5 year frame, 1 year on all other parts, 1 year labor

XT5 Treadmill Warranty:

1 year on parts and labor

Steelflex SF850 Bike Warranty:

10 year frame, 3 year parts, 180 days labor, 2 year handle bar post, saddle post, flywheel, brake knob assembly, 1 year pedals, saddle –

Plate-Load Warranty:

15 year frame, 3 year bearings, 9 months upholstery & grips, 1 year all other parts

Steelflex Jungle Gyms:

15 yr frame, 3 year bearings, 9 months upholstery & grips, 2 years all other parts 1 year labor

Steelflex Multi Gyms:

(applies to models MG300B and MG3000 in a light commercial setting only) 15 yr frame, 3 year bearings, 9 months upholstery & grips, 2 years all other parts , 1 year labor

Steelflex Multi Gyms:

for home use (applies to models MG100B,MG200B, MG300B, MG3000) lifetime frame and parts, 1 year labor

Steelflex Benches:

lifetime frame, 2 yr parts, 1 year upholstery, 1 year labor

MegaPower Warranty:

15 year frame, 3 year bearings, 9 months upholstery & grips, 2 year all other parts

Steelflex Commercial Cardio Warranty:Lifetime frame, 3 year labor, 3 year parts, 7 year treadmill motor

Run Belt and Run Deck, Handle Bar Grips, Seats, Plastic Covers, All have a Limited 2 Year Warranty, Please contact FMI for details.

FITNEX LIGHT COMMERCIAL WARRANTY:

Lifetime frame, 5 year parts, 2 year labor, 5 year treadmill motor

Run Belt and Run Deck, Handle Bar Grips, Seats, Plastic Covers, All have a Limited 1 Year Warranty, Please contact FMI for details.

Indoor Bike Warranty:

Velocity & Momentum will have 2 year warranty on cranks, flywheel, bracket spindle, handle bar and seat posts. Five-year frame warranty. One-year warranty on pillow block bearings, tension knob assembly, and bracket bearings, and drive belt. The Velocity and Momentum have a 1 year warranty on seat, & toe clips, pedals, saddle, handlebars, grips, quick release handles. Both the Velocity and Momentum have a labor warranty of 1 year from date of purchase.

ATTENTION:

WARRANTY APPLIES TO PURCHASES AFTER JULY 1, 2019. ONLY DURING THE FIRST YEAR ARE WARRANTY PARTS SHIPPED UPS GROUND AT OUR EXPENSE, ANY OTHER METHOD OF SHIPPING IS AN ADDITIONAL CHARGE. AS PER FITNESS MASTER’S DISCRETION, ALL PARTS UNDER WARRANTY CAN BE REPLACED WITH EITHER NEW OR REBUILT PARTS.

FMI Fitnex B55SG Upright Bike | Self-Powered | 16 Resistance Levels | LED Display | 300 lb Capacity

$999.00

"After 6 months with the XMARK Functional Trainer, I can confidently say it's the best investment I've made for my home gym. The cable system is incredibly smooth, and the weight stack provides consistent resistance throughout the full range of motion. Build quality is commercial-grade - feels like equipment you'd find in a premium gym." — Marcus T., Chicago, IL

"I was hesitant about the space it would take up, but the XMARK's compact design fits perfectly in my garage gym. The variety of exercises I can do is endless - from lat pulldowns to functional movements. Assembly was straightforward with clear instructions." — Lisa M., Portland, OR

I’ve had mine for almost a year and couldn’t be happier. It was nearly double the price when I bought it, and I’d still do it again. The tub gets cold fast, feels great, and I love that I can deflate and store it in winter. Support was quick and friendly when I called. Friends and family love using it too. Highly recommend!

--Max B.--

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Fitnex Cardio Home Warranty : Lifetime frame, 7 year parts, 2 year labor, 10 year treadmill motor

Run belt, run deck, handle bar grips, seats, plastic covers all have a 1 year limited warranty

X5 Bike Warranty:

5 year frame, 6 months on pedals and saddle, 1 year on all other parts, 1 year labor

XE5 Elliptical Warranty:

5 year frame, 1 year on all other parts, 1 year labor

XT5 Treadmill Warranty:

1 year on parts and labor

Steelflex SF850 Bike Warranty:

10 year frame, 3 year parts, 180 days labor, 2 year handle bar post, saddle post, flywheel, brake knob assembly, 1 year pedals, saddle –

Plate-Load Warranty:

15 year frame, 3 year bearings, 9 months upholstery & grips, 1 year all other parts

Steelflex Jungle Gyms:

15 yr frame, 3 year bearings, 9 months upholstery & grips, 2 years all other parts 1 year labor

Steelflex Multi Gyms:

(applies to models MG300B and MG3000 in a light commercial setting only) 15 yr frame, 3 year bearings, 9 months upholstery & grips, 2 years all other parts , 1 year labor

Steelflex Multi Gyms:

for home use (applies to models MG100B,MG200B, MG300B, MG3000) lifetime frame and parts, 1 year labor

Steelflex Benches:

lifetime frame, 2 yr parts, 1 year upholstery, 1 year labor

MegaPower Warranty:

15 year frame, 3 year bearings, 9 months upholstery & grips, 2 year all other parts

Steelflex Commercial Cardio Warranty:Lifetime frame, 3 year labor, 3 year parts, 7 year treadmill motor

Run Belt and Run Deck, Handle Bar Grips, Seats, Plastic Covers, All have a Limited 2 Year Warranty, Please contact FMI for details.

FITNEX LIGHT COMMERCIAL WARRANTY:

Lifetime frame, 5 year parts, 2 year labor, 5 year treadmill motor

Run Belt and Run Deck, Handle Bar Grips, Seats, Plastic Covers, All have a Limited 1 Year Warranty, Please contact FMI for details.

Indoor Bike Warranty:

ATTENTION:

FMI Fitnex B55SG Upright Bike | Self-Powered | 16 Resistance Levels | LED Display | 300 lb Capacity