Synergy Pro Magnetic Indoor Cycling Bike - SF-B1851

4.7 (406)
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Product details

Web ID: 19535479
Start a new in-home fitness routine with the SF-B1851 Synergy Pro Magnetic Indoor Cycling Bike. Ergonomically designed, this bike has rounded multi-grip handlebars and a 4-way adjustable seat that can help maintain your comfort and stability while you exercise. Cycling on an indoor bike is a low-impact exercise that can strengthen your cardiovascular performance and engage muscles in your arms, core, and legs.

  • Product Features

    • INERTIA-READY FLYWHEEL: The large 40-pound flywheel is designed to store moving energy that keeps you pedaling consistently during your cycling workout. The onboard magnetic brakes can bring the wheel to a stop instantly.
    • BELT-DRIVE MECHANISM: This bike has a durable belt-drive mechanism that is smooth and consistent, allowing you to focus more on your performance while you re on the bike.
    • MAGNETIC RESISTANCE: The integrated magnetic resistance puts you in full control of your workout intensity. It delivers consistent performance that makes your workout easy when you want it, hard when you need it.
    • PULSE-SENSING GRIPS: Monitor your cardiovascular performance with the built-in pulse-sensing grips so you can actively check your workout progress, displayed on the performance monitor.
    • 【BASED IN U.S.】With 20+ years of excellence, Sunny Health and Fitness delivers top-notch equipment and service. All purchase include FREE SunnyFit App with 1000+ training videos, advice, tracking and more to help you get your results faster!
    • Wipe clean
    • Imported
    • Request warranty information

  • Shipping & Returns

    • This item qualifies for Free Shipping with minimum purchase! exclusions & details
    • Our Normal Gift Boxing is not available for this item.
    • This item may not be shipped to Alaska, U.S. Virgin Islands, Marshall Islands, Guam, Palau, Federated States of Micronesia, Hawaii, American Samoa, Puerto Rico, Northern Mariana
    • Enjoy a longer window to return most of your holiday purchases. See our Extended Holiday Return Policy to see if this item qualifies.
    • This item may not be shipped to Alaska, American Samoa, Guam, Hawaii, Marshall Islands, U.S. Virgin Islands, Puerto Rico, Palau, or the Pacific Islands.
    • California and Minnesota customers call 1-800-289-6229 for Free Shipping information.
    • For complete details, see our Shipping and Returns policies.

Ratings & Reviews

4.7/5

406 star ratings & reviews

Write a Review
79.6% of reviews have 5 stars
323
11.6% of reviews have 4 stars
47
5.2% of reviews have 3 stars
21
2.5% of reviews have 2 stars
10
1.2% of reviews have 1 star
5
406 reviews
Daniel P.
2 months ago

The bike/flywheel rides smooth and

The bike/flywheel rides smooth and has plenty of resistance for a great workout. The price was excellent being on sale. The very horizontal angle of the handle bars is too extreme for me. I want to turn the stem around which would give the handle bars a slight pitch upward, but I would need to 'drill a hole' at the correct spot in the stem to insert the adjustment bolt/screw, so? And the seat is way too minimal like for a competition rider. I just use it for exercise. , so I guess I will have to buy a seat.

Customer review from Sunny Health & Fitness

Linda
10 months ago

Not ideal

Have owned this model for a couple of years now, use it for winter and poor weather indoor rides. My main complaint is that the holes allowing seat height adjustment are spaced like an inch apart and I need the seat stepped up a half space. My riding geometry is off so I’m getting foot and knee pain. Other than that the spin bike works as a rudimentary Zwift trainer after switching pedals to allow an Assiomo Uno to act as a power meter. The lack of geometry fine tuning has me wracking my head for a mechanical tweak to the seat to give me an adjustment.

Customer review from Sunny Health & Fitness

Ariel L.
11 months ago

Great bike!

I love my new Sunny Synergy Pro bike! I had a similar model but this one does so much more while you ride which is helpful to keep track if your RPM's, mileage and heart rate! Cycling is my favorite form of cardio and for the price you can't get much better than this in my opinion. I highly recommend this bike.

Customer review from Sunny Health & Fitness

David P.
11 months ago

Wish I had bought it sooner

Great bike. Easy to follow instructions for assembly. Like the adjustability. Quiet!

Customer review from Sunny Health & Fitness

Rob
12 months ago

Don’t.

Computer broke after a few uses. Had to take everything apart to send pictures and videos. Now knob that controls magnet doesn’t function. Same thing. Spend an hour taking it all apart to send pics and videos. Pain. Less than year old and had two issues that made it unusable.

Customer review from Sunny Health & Fitness

E.CYNTHIA H.
1 year ago

Nice Bike

we purchased the bike a few weeks ago and I love the way it rides. My only question is it suppose to stop completely because my bike does not stop. I have followed the instructions but no results .

Customer review from Sunny Health & Fitness

JIM M.
1 year ago

Synergy Pro Has What I'm Looking For

With its belt drive and magnetic tension my new indoor bike seems more finely __quote__tuned__quote__ than my old, and certainly smoother and quieter, yet has the same stability and durability. I've made a good step up. I haven't learned the electronics yet but expect they will also result in better workouts.

Customer review from Sunny Health & Fitness

Maura K.
1 year ago

I’m still working on assembly.

I’m still working on assembly. The directions are so faint it is difficult to read, let alone follow.

Customer review from Sunny Health & Fitness