Endurance Belt Drive Magnetic Indoor Exercise Cycle Bike

Endurance Belt Drive Magnetic Indoor Exercise Cycle Bike
Endurance Belt Drive Magnetic Indoor Exercise Cycle Bike
Endurance Belt Drive Magnetic Indoor Exercise Cycle Bike
Endurance Belt Drive Magnetic Indoor Exercise Cycle Bike
Endurance Belt Drive Magnetic Indoor Exercise Cycle Bike
Endurance Belt Drive Magnetic Indoor Exercise Cycle Bike
Endurance Belt Drive Magnetic Indoor Exercise Cycle Bike
Endurance Belt Drive Magnetic Indoor Exercise Cycle Bike
Endurance Belt Drive Magnetic Indoor Exercise Cycle Bike
Endurance Belt Drive Magnetic Indoor Exercise Cycle Bike
Endurance Belt Drive Magnetic Indoor Exercise Cycle Bike

Endurance Belt Drive Magnetic Indoor Exercise Cycle Bike


18 reviews

Regular price

List Price:

Sale price $389.98 Save $109.02

Performance Monitor

Magnetic Resistance

Device Holder

Pulse Sensors


The Endurance Magnetic Indoor Exercise Cycle Bike model SF-B1877 is an excellent belt driven system model for low impact fitness. The performance monitor allows you to track your Speed, Distance, Time, Calories, Odometer, RPM, and Pulse. Excellent for beginners, fitness enthusiasts, or anyone needing recovery training to start an in-home calorie burning workout routine. Adjustable magnetic resistance allows you to change up your exercise cycling routine making every home workout session feel different. Designed to last, feel confident riding this durable stationary bike with a 265 lb maximum user weight. The Endurance Magnetic Exercise Bike model SF-B1877 will push your stamina, performance, and fitness to the next level!



Time, Speed, Distance, Calories, Odometer, RPM, Pulse, and Scan.



Adjustable magnetic resistance provides smooth contactless resistance and is virtually maintenance free.



206mm: Lower Q-factors provide better biomechanical and ergonomic efficiency. This allows the rider to pedal faster and harder more effectively.



Follow along to your favorite Sunny Health & Fitness training videos on your tablet or mobile device.



Stay hydrated to be ready to exercise for extended training sessions.



265 lb max user weight with sturdy frame built to last.



4-Way adjustable seat to help you stay in proper form.



2-Way adjustable handlebars for fit and comfort.


Pulse Sensors

Monitor/maintain goal heartrate. The steadier & more prolonged elevated heartrate is during workout, more fat is burned.



Tilt and roll away for easy storage with convenient transport wheels allowing easy movement of equipment.


Floor Stabilizers

Stabilizers help create balance, even on uneven floors! Exercise more intensely without worrying about rocking/tilting.



Monitor: time, speed, distance, calorie, odometer, rpm, pulse, scan

29 lb Flywheel

Micro-adjustable resistance

Multi-grip handlebars

Caged foot pedals

Device holder

Pulse sensors

Floor stabilizer


Cushioned seat

Easy 4-way adjustable seat

Seat dimensions: 10.5L x 9.8W x 2.36H in

2-way adjustable handlebars

Non-slip handlebars

Bottle holder

Transportation wheels


265 lb weight capacity

Adjustable magnetic resistance 

Smooth and reliable belt drive system

Adjustable inseam height: Min 27 in / Max 37 in

Handlebar to seat: Min 14.5 in / Max 19.29 in

Q-factor: 206mm

Emergency stop brake


Warranty: 3 year structural frame 180 days other parts and components

Product weight: 82.9 lb

Product dimensions: 48.8L x 20.1W x 48.6H in

Ship weight: 95 lb

Ship dimensions: 40.6L x 9.5W x 34.7H in

Warning iconCancer and Reproductive Harm - www.P65Warnings.ca.gov

  Warning iconCancer and Reproductive Harm - www.P65Warnings.ca.gov


The Product Manual may be downloaded below. If you have any questions, please feel free to contact our customer care team.

This bike comes equipped with caged foot pedals that provide stability and safety.

Yes! We have a great library of workouts that you can perform on your indoor cycle, which can be found on the Workouts section of our website as well as on our YouTube channel.

Magnetic resistance uses magnets to add resistance which allows for smooth and quiet riding experience. Since it’s a magnetic brake and its pad doesn’t touch the flywheel, you won’t have to worry about wear and tear, replacement, or any friction-generated noise.

The durable belt drive provides smoother and silent pedaling and requires less maintenance.

The performance monitor helps track time, speed, calories, odometer, RPM, and pulse.

Feel confident sitting on our durable design with a 265LB max user weight limit.

Yes! The handlebars are 2-way adjustable (up and down) and the seat is 4-way adjustable (up, down, forward, backwards) for a fully customizable fit.

The best way to see if this bike would be suitable for you is to measure your inseam. This bike can accommodate inseams between 27.5" and 36.5".

There is a 3-year warranty on the structural frame and 180-day warranty on other parts and components.

Customer Reviews

Customer Reviews
4.7 Based on 18 Reviews
Write a Review Ask a Question
  • Reviews
  • Questions

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
Jonathan D.
United States United States
Solid Value Spin Bike

This spin bike has been great from the start! The delivery was easily tracked and arrived in good shape. Brought it downstairs, unpacked it (took pictures just in case I needed to repackage it), and then started to build it following the provided instructions. This bike is of solid construction. The pedals, magnetic resistance, seat, handlebars, and base are all sturdy. My wife does want to purchase separate clip-in pedals since she already has spin shoes meant for those types of pedals, so those will be purchased separately. For the price we paid, I think it's a great value spin bike. Just throw in any type of digital access app with classes or pull some of Sunny's free videos up on a tablet, and you're good to go.

Danielle G.
United States United States
Great bike!

Love this bike. Easy to assemble. The best part is how quiet it is!!

Nicole F.
United States United States
Awesome Bike!

Was delivered right to my door. Assembly was very easy and straightforward. My mom helped me put it together and I was ridding it in a half hour! Very quiet, built well and really glad I did alot of research! Very happy! Nicole Fullman

Sunny Health and Fitness Endurance Belt Drive Magnetic Indoor Exercise Cycle Bike Review
United States United States
Dont buy bikes anywhere else. Seriously, dont do it.

Great quality bike, easy set up , great rides, smooth pedals, magnetic resistance cannot be compared. I can understand if you are a professional cyclist and need more from other bikes. Im not in great shape and me and my wife aren't cyclists, but this is an amazing bike to start. Mind you I can see myself in shape and still get alot out of the bike. Overall great bike and the price?! No one is even close. Thank you so Much Sunny!!

Sunny Health and Fitness Endurance Belt Drive Magnetic Indoor Exercise Cycle Bike ReviewSunny Health and Fitness Endurance Belt Drive Magnetic Indoor Exercise Cycle Bike Review
Miguel H.
United States United States
We LOVE this bike!!!

This was the best purchase we have made as husband and wife. Couple this with some SPD pedals, a clip in cycling shoe, and a GREAT indoor cycling program on your big *** TV and you will get a whole lot of weight loss! Would buy it again in a heartbeat. Be the best version of yourself and shed those quarantine fats away.

Erika B.
United States United States
Too good to be true

LOVED this bike when I first got it. It’s super quiet, has a cadence monitor, and overall felt like a sturdy bike. I purchased the bike 11/30/20 and by 2/2/21 the bike started to make this awful clicking noise at the pedals. Customer service was very nice and sent me the replacement parts but I had only just gotten the bike. The warranty for parts is only 6 months, and thank god it happened within those 6 months otherwise I’d be paying out of pocket for new parts for a 3 month old bike. I am only a 128 lb petite woman who was riding the bike 4 times a week for no longer than 45 mins at a time. This bike doesn’t seem like it’s built to last so beware.

Sunny Health and Fitness

Hello Erika! Thank you for bringing this to our attention so we can better service you. We sincerely apologize that you experienced this setback. We see a team member has been in contact with you via email and sent out a replacement part as well. If you have any questions, please respond back to our email at your earliest convenience and our team will be happy to help. We appreciate your patience and understanding.