Synergy Magnetic Indoor Cycling Bike

Synergy Magnetic Indoor Cycling Bike
Synergy Magnetic Indoor Cycling Bike
Synergy Magnetic Indoor Cycling Bike
Synergy Magnetic Indoor Cycling Bike
Synergy Magnetic Indoor Cycling Bike
Synergy Magnetic Indoor Cycling Bike
Synergy Magnetic Indoor Cycling Bike
Synergy Magnetic Indoor Cycling Bike
Synergy Magnetic Indoor Cycling Bike
Synergy Magnetic Indoor Cycling Bike
Synergy Magnetic Indoor Cycling Bike
Synergy Magnetic Indoor Cycling Bike
Synergy Magnetic Indoor Cycling Bike

Synergy Magnetic Indoor Cycling Bike


318 reviews

Regular price

List Price:

Sale price $432.38 Save $180.47

5795 in stock

Resistance icon

Device Holder

Monitor icon

Magnetic Resistance

Pulse sensor icon

Pulse Sensors

seat icon

Caged Pedals

Why the Synergy Bike?

Jumpstart your in-home fitness routine with the SF-B1879 Synergy Magnetic Indoor Cycling Bike by Sunny Health & Fitness. Indoor cycling can strengthen your cardiovascular health and engage your core, arms and lower body with proper and consistent exercise.

Experience a ride like none before with Synergy’s exclusive innovative patented flywheel design, developed to produce more momentum and smoothness than standard flywheels. The belt drive system coupled with the magnetic resistance and this special flywheel makes each ride quiet, solid, and virtually maintenance-free. Instantly boost your in-home cardio challenge with the Synergy Magnetic Indoor Cycling Bike that makes your workout easy when you want it, hard when you need it.


Performance MONITOR

Build new workouts when you effectively track your progress by using the battery-powered display. Easily check your speed, distance, time, calorie, odometer, RPM, and pulse at a glance while you cycle. Scan mode will run through all stats, each displaying for 6 seconds while you work out. 


Pulse Sensors

Monitor and maintain your target heart rate. Measuring your pulse rate is an important tool for exercising correctly and efficiently. The more steady and prolonged the elevated heart rate is during the workout, the more fat is burned. This important piece of health data will help you better understand your health and fitness status.


Device Holder

Improve your fitness experience by securely placing your phone or tablet in the tablet holder. Utilize this added accessory following along to fitness videos, or listening to your workout playlist. Whatever the use, you won’t be disappointed.


DumBBell HOlders

Use this cycling exercise bike with dumbbells (not included) to engage muscles in your upper body while you cycle. You can place them onto the built-in dumbbell holders when they are not in use (up to 20lb).


Magnetic Resistance

Revitalize your workout with integrated magnetic intensity which can amplify or reduce your cardiovascular challenge within seconds.


4-Way Adjustable Seat

Customize this bike around your individual height. Take advantage of the 4-way adjustable seat, 2-way adjustable handlebar and a wide leg inseam range of 27 inches to 37.5 inches.  


Caged Foot Pedals

Textured non-slip foot pedals will accommodate all sizes, while the remaining grip will ensure safe footing during the most demanding and vigorous workouts! Foot straps keep your feet saddled in so you can focus on the workout without feeling unbalanced.


Floor stabilizers

No matter the surface of your home, you will have a stable, stationary workout. Adjust the height of each foot leveler to create a balanced riding experience, even if you have uneven floors! Exercise more intensely without worrying about rocking or tilting!


Transportation Wheels

The front-mounted transportation wheels make moving the bike easy and convenient around your house for easy storage. Just tilt the bike forward and roll.



Performance monitor: speed, distance, time, calorie, odometer, rpm, pulse, scan

30 lb flywheel

Micro-adjustable resistance system

Belt drive mechanism

Device holder

Pulse sensors

Caged foot pedals

Floor stabilizers



Cushioned seat

Seat dimensions: 10.5L x 7W x 1.5H in

4-way adjustable seat

2-way adjustable handlebar

Transportation wheels

Ergonomic grips

Bottle holder

Dumbbell holder


275 lb weight capacity

Magnetic resistance system

Adjustable inseam: Min 27 in / Max 37.5 in

Handlebar to seat distance: Min 16 in / Max 20.5 in

Emergency stop brake


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

Product weight: 88.2 lb

Product dimensions: 49L x 22W x 50.5H in

Ship weight: 102.5 lb

Ship dimensions: 41.5L x 10W x 34.6H in

Warning iconCancer and Reproductive Harm -

  Warning iconCancer and Reproductive Harm -


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

The differences for the Synergy & Synergy Pro bikes are the weight of the flywheel, the type of pedals it comes with, and the weight capacity. Both models come equipped with the specially patented flywheel, magnetic resistance, dumbbell holders, along with a water bottle holder.

The innovative patented flywheel works in sync with its advanced magnetic resistance system and makes riding extra smooth, solid and quiet.

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.

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

Feel confident sitting on our durable design with a 275 lb max user weight limit.

The performance monitor helps track speed, distance, time, calories, odometer, rpm, pulse, with a scan mode.

Yes! The Synergy Magnetic Indoor Cycling Bike comes with dumbbell holders so that your dumbbells (not included) are readily available for upper body & core exercise in tandem with your cycling workout.

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.

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 318 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:
John A.
United States United States
Exactly What I Needed

Awesome! So nice to have an affordable option, that is high quality, versus over spending with their competitors. I've taken hundreds of spin classes at gyms, and this bike works! There are plenty of free youtube classes, no subscription needed. Only constrictive feedback is I wish the digital display had more bells and whistles, but not a game changer. I'd buy again, and recommend to others.

Sunny Health and Fitness Synergy Magnetic Indoor Cycling Bike Review
Sophie R.
United States United States
Good bike!

Works well, silent, easy to put together, sturdy, and super fast delivery. Also holds my boyfriend whom is more then 250lbs.

Sunny Health and Fitness Synergy Magnetic Indoor Cycling Bike ReviewSunny Health and Fitness Synergy Magnetic Indoor Cycling Bike Review
Amanda T.
United States United States
Don’t let the price fool you.

This bike is amazing and it happens to cost way less than all the others in the market. I tested out all the other bikes and Sunny’s feels the best! Sturdy and smooth. I even had my friend who is a spin instructor try it out and she said, ‘wow, great bike for the value... I’ll direct anyone I know to this brand for cost and quality reasons’!

Sunny Health and Fitness Synergy Magnetic Indoor Cycling Bike Review
Brittani K.
United States United States
I'm obsessed!

I love my Sunny Synergy so much. It was so easy to assemble. It is the sturdiest spin bike I've been able to ride in a long time, and it's so quiet with this belt drive and magnetic resistance. I wish I would have ordered it sooner! Do not hesitate!

Sunny Health and Fitness Synergy Magnetic Indoor Cycling Bike Review
Rhetta L.
United States United States

So far this has been one of the best investments I’ve made. It’s very quiet and sturdy. I have finally found joy in working out!

Sunny Health and Fitness Synergy Magnetic Indoor Cycling Bike Review
Susan M.
United States United States
Fun to Ride

I love this bike. Comfortable to ride. I use both the Sunny Health workouts and Apple Fitness which inspires me to workout. I have recommended this bike to many. Fits perfect in my office.

Sunny Health and Fitness Synergy Magnetic Indoor Cycling Bike Review