Keiser vs Schwinn – Which One Suits You?

Keiser and Schwinn are two big names in the indoor cycling world. The former’s M3i and the latter’s SC Power have often been described as the best in their class despite distinct differences. In this Keiser vs Schwinn comparison we highlight similarities and key differences to help users decide which one suits them best.

Hi, my name is Mel. I have been working for a local gym for several years. I am trying to set up a fitness studio of my own. Cycling is one of the most popular indoor exercises in the world so I’m looking into investing on a couple of indoor bikes. Keiser and Schwinn are two reputable names in the industry. Keiser’s M3i and Schwinn’s SC Power are two popular models. Which of the two would be a better choice for the studio.

Here is a Keiser vs Schwinn comparison to help you decide which one would be best for you.

What Are The Differences Between Keiser And Schwinn?

Keiser M3i
Schwinn SC Power
49 x 26 x 45 inches
55 x 21 x 46 inches
Rear mounted
Front mounted
Bike weight
85 lbs.
120 lbs.
User weight capacity
300 lbs.
350 lbs.
Height range
4’10’’ – 7’’
4’ 11†– 6’ 8’’

Keiser Vs Schwinn – How Do They Compare?


Both bikes come with somewhat simple consoles which are used to display workout data such as speed, RPMs, time elapsed resistance and distance.

The Keiser console is battery powered and has a backlight which automatically comes on in a dark room. It has Bluetooth connectivity so you can store and transfer data to another device.

The Schwinn SC Power has an Echelon 2G consolewhich is powered using an on-board generator so there is no need for batteries. It displays basic workout data like in any other spin bikeconsole but also has wireless connectivity using Bluetooth as well as ANT+.

The Schwinn bike is better in this regard because you never have to think about replacing batteries. It also makes it more environmentally friendly.


One outstanding difference between these two bikes is the positioning of the flywheel. Both have heavy flywheels but Keiser’s bike has its wheel mounted in the rear while Schwinn’s bike has a front mounted flywheel.

While a majority of spin bikes in the market have their flywheel in the front, Keiser opts for a rear position saying that it keeps the wheel safe from corrosion which is usually caused by sweat. By removing the wheel from the sweat zone, the wheel and all other components of the drive last longer and maintain the sleek, shiny new look. Keiser says you could use a spin bike for years and never notice deterioration on appearance or performance thanks to this positioning.

Neither has been proven to be better than the other in regards to performance. There is little evidence to prove that a bike with a rear-mounted flywheel performs better than one with a front flywheel. Aesthetically, sweat does tarnish front flywheel over time.

Riding Experience

Both bikes have a heavy flywheel which is what gives you a smooth cycling experience. Magnetic resistance systems in both make sure you have a quiet bike which can be used even in the living room without disturbing other people in the house.


One key difference is in how you make resistance adjustments. In the Keiser M3i, there is a lever at handlebar level which is moved back and forth to increase or reduce resistance. In the Schwinn SC Power there is a knob on the frame which is turned to change resistance levels.

If you are like many riders you may find it easier to use a resistance adjuster at the handlebar level as in the Keiser bike especially when you are cycling in a standing position. There is also a noticeable difference in the feel of the bike when you use the emergency brake to stop the flywheel. The Schwinn bike uses a direct pressure resistance system for the brake and this gives you more of a road bike feel.


Another element which varies riding experience is the handlebars in the two bikes. Both have wide handlebars. The Keiser bike has butterfly shaped bars which form what looks like two continuous rods on either side. The Schwinn bike has two L-shaped rods on either side. The Keiser handlebars therefore provide the user with more grip positions. Varying positions helps to ease strain on the back and buttocks therefore enabling you work out for longer.

Keiser’s bike gives a better riding experience thanks to an easy- to- operate and easily reachable resistance lever regardless of your riding position.Butterfly-shaped handlebars let you shift hand positions with a variety of grip options.

Keiser Vs Schwinn – A Comparison Overview

Keiser M3i Overview

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It is a premium spin bike with premium features and the price tag on it confirms it. This model is often used at gyms and fitness studios. It can be adjusted for users between 4-foot 10 and 7-foot and can take up to 350 pounds.

Keiser claims to be the first company to manufacture indoor bikes with a V-shaped frame. This shape is superior because it mimics road bikes in its ability to have the seat and handlebars adjusted in conjunction with each other.

It is clear Keiser has put a lot of thought into every last detail, including the pedals. For starters, the pedals are curved in order to eliminate pressure points on the user’s feet and have a dual design to accommodate cycling shoes and running shoes. The toe cages used for users using running shoes are integrated into the pedal rather than added onto it as is the case on other dual-design pedals.

Accuracy has become an increasingly growing concern when it comes to indoor bikes. You could have a wide workout statistics displayed in front of you but how accurate are they? This is why the Keiser M3i’s certification is considered so important. In fact this bike was the first to receive the TÜV EN957-10 certification for Power Accuracy and Safety.


  • TÃœV EN957-10 certified
  • Multi-position handlebars
  • V-shaped frame
  • Curved pedals


  • Uncomfortable seat

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Schwinn SC Power Overview

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The SC Power indoor bike belongs to the company’s Smooth Cycling Power range. This is a sturdy bike with a maximum weight capacity of 350 lbs. Aesthetics are not forgotten because the powder coated aluminum frame finish gives it that new, shiny look even after many months of use.

Some outstanding features in this bike are Morse taper pedals which significantly improves reliability and durability. When it comes to accuracy of measurements, Schwinn has incorporated the 4iiii® crank arm power meterwhich claims to deliver results with only +/- 1%. This assures you of accurate power feedback as you ride which is especially crucial for professional riders who are constantly looking to improve their power output.

Users ranging between 4 -foot 11 and 6- foot 8 will be comfortable on this bike. Micro seat and handlebar adjustments allow you to find the perfect riding position for your height

If you are one of many users who appreciate customization in a product, you will be glad to know you can get this bike with a few customized elements. Customizable options available include a frame paint of your choice, personalized decals and personally branded accessories.

There are two water bottle holders on the handlebars which help you stay hydrated through the workout.


Self-powered console

  • Morse taper pedals
  • 4iiii crank arm power meter
  • Customizable options


  • Minimal handlebar grip positions

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The Keiser M3i and Schwinn SC Power are both quality bikes which will give you effective workouts whether you are looking to lose weight or cardiovascular exercise. Both are quiet bikes thanks to poly-v belt drives and magnetic resistance systems. Both have a fairly wide height range and high weight capacities.

Verdict: So which is better Keiser or Schwinn?

The Keiser M3i stands out as the better bike especially for commercial use because of its rear-mounted flywheel. A lever on the handlebar rather than a knob on the frame for resistance adjustments, as well as butterfly-shaped handlebars help to improve the overall user experience.


What is the advantage to a perimeter weighted flywheel like Schwinn’s wheel?

Perimeter weighted flywheels tend to be heavier than center-weighted wheels with the intention of increasing resistance.

What is the difference between Keiser M3 and M3i?

The M3i bike includes wireless connectivity like Bluetooth but the M3 doesn’t.