How is the Synergy Pro different from a chain-drive spin bike?

It uses a belt drive with magnetic resistance instead of a chain and friction pad. That makes it quieter and nearly maintenance-free, though it gives up some of the road-like feel chain bikes have.

Is it quiet enough for an apartment?

Yes. The belt drive and magnetic resistance are the bike's main selling point, and owners consistently call it quiet. Floor vibration is the bigger concern, so use a mat.

Does the resistance adjust in steps?

No. You turn a single knob to raise or lower resistance continuously. There are no preset levels or programmed workouts.

Can I change the saddle and pedals?

The saddle mounts on a standard rail system, so most aftermarket saddles fit. Pedals are threaded and can be swapped for cages or SPD-compatible pedals.

What is included with the bike?

You get the frame, flywheel, handlebar, seat, resistance knob and console, plus assembly hardware and tools. A tablet holder and heart-rate strap are not part of the package.

Where is the Synergy Pro Magnetic Indoor Cycling Bike cheapest?

At Sunny Health & Fitness, for $499.99, as of our latest check.

What do buyers say about the Synergy Pro Magnetic Indoor Cycling Bike?

Rated 4.6 out of 5 from 1,000 ratings.

Synergy Pro Magnetic Indoor Cycling Bike

Best price now

$499.99at Sunny Health & FitnessChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Sunny Health & Fitness

Synergy Pro Magnetic Indoor Cycling Bike

Best price now

$499.99at Sunny Health & FitnessChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Sunny Health & Fitness

Ask our agent about this product

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Price facts

Last seen at $499.99 at Sunny Health & Fitness on Nov 9.

Our take on the Synergy Pro Magnetic Indoor Cycling Bike

The Synergy Pro SF-B1851 is a belt-driven indoor cycling bike with magnetic resistance and a patented flywheel that Sunny says adds momentum and smoothness over standard flywheels. It pairs that quiet drivetrain with a 4-way adjustable seat and a multi-grip rounded handlebar, so it suits riders who want a low-maintenance bike for apartments, shared homes or TV workouts. Against typical chain-drive spin bikes it trades some road-like feel for near-silent running and less upkeep. Owners rate it well overall, though the console and saddle draw the most complaints.

Best forApartment and shared-home riders who need a quiet bikeBeginners building a low-impact cardio routineRiders who want magnetic resistance with little maintenanceHome exercisers who watch TV or read while pedaling

Pros

Magnetic belt drive runs very quietly
Patented flywheel adds momentum and smooth pedaling
Resistance knob gives quick, stepless changes
4-way adjustable seat and multi-grip handlebar help fit
Low-maintenance design compared with chain-drive bikes

Cons

Basic console offers limited feedback
Included saddle is uncomfortable for some riders
Heavy frame is hard to move alone
Resistance is manual, with no programmed workouts

Synergy Pro Magnetic Indoor Cycling Bike prices at every store

Sunny Health & FitnessNew
In stockReturn policy
$499.99Checked Nov 9
Visit Sunny Health & Fitness

What reviewers say

4.6 / 51,000 ratings

With 4.6 out of 5 from about 1,000 ratings, owners mostly praise the quiet, smooth ride and solid build. Complaints center on the saddle and the simple console.

What people mention

NoisePraisedOwners say the belt and magnetic resistance keep the ride quiet enough for shared homes and TV.
Ride smoothnessPraisedReviewers describe pedaling as smooth and steady, crediting the flywheel design.
BuildPraisedBuyers call the frame solid and stable during hard efforts.
SaddleCriticisedSeveral riders find the included seat uncomfortable and swap it out.
ConsoleCriticisedThe display is described as basic, with few workout metrics or programs.
AssemblyMixedSome say setup is straightforward; others find the bike heavy to unpack and position.

About the Synergy Pro Magnetic Indoor Cycling Bike

The Synergy Pro Magnetic Indoor Cycling Bike (model SF-B1851) is an indoor exercise bike with a belt drive magnetic resistance system. Cycling indoors is a low-impact exercise that works the cardiovascular system and engages the arms, core and legs.

The bike has a rounded multi-grip handlebar and a 4-way adjustable seat. It uses a patented flywheel design that adds momentum and smoothness compared with standard flywheels. The flywheel works with the belt drive magnetic resistance system for a quiet ride.

Magnetic resistance keeps maintenance low. To make a workout easier or harder, twist the resistance knob.

Model: SF-B1851
Resistance: Magnetic, belt drive, adjusted with a twist knob
Flywheel: Patented design for added momentum and smoothness
Handlebar: Rounded, multi-grip
Seat: 4-way adjustable
Noise: Quiet operation
Maintenance: Virtually maintenance-free

Questions and answers

How is the Synergy Pro different from a chain-drive spin bike?: It uses a belt drive with magnetic resistance instead of a chain and friction pad. That makes it quieter and nearly maintenance-free, though it gives up some of the road-like feel chain bikes have.
Is it quiet enough for an apartment?: Yes. The belt drive and magnetic resistance are the bike's main selling point, and owners consistently call it quiet. Floor vibration is the bigger concern, so use a mat.
Does the resistance adjust in steps?: No. You turn a single knob to raise or lower resistance continuously. There are no preset levels or programmed workouts.
Can I change the saddle and pedals?: The saddle mounts on a standard rail system, so most aftermarket saddles fit. Pedals are threaded and can be swapped for cages or SPD-compatible pedals.
What is included with the bike?: You get the frame, flywheel, handlebar, seat, resistance knob and console, plus assembly hardware and tools. A tablet holder and heart-rate strap are not part of the package.
Where is the Synergy Pro Magnetic Indoor Cycling Bike cheapest?: At Sunny Health & Fitness, for $499.99, as of our latest check.
What do buyers say about the Synergy Pro Magnetic Indoor Cycling Bike?: Rated 4.6 out of 5 from 1,000 ratings.