Asuna 4100 Commercial Indoor Cycling Bike Product Image 1 - Sunny Health & Fitness
Asuna Chain Drive Commercial Indoor Cycling Trainer Exercise Bike Image 2 - Sunny Health and Fitness
Asuna 4100 Commercial Indoor Cycling Bike Product Features Image 3 - Sunny Health & Fitness
Asuna 4100 Commercial Indoor Cycling Bike Product Details Image 4 - Sunny Health & Fitness
Chain Drive Commercial Indoor Cycling Trainer Exercise Bike Image 5 - Sunny Health and Fitness
Asuna 4100 Exercise Bike Rolling on Transport Wheels Image 6 - Sunny Health & Fitness
Asuna 4100 Commercial Indoor Cycling Bike Product Image 7 at 45 degrees - Sunny Health & Fitness

Premium Chain Drive Commercial Indoor Cycling Trainer Exercise Bike

6 Reviews


Regular price

List Price:

Sale price $480.99 Save $259.00
98 in stock
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adjustable felt pad resistance

With a simple adjustment of a knob, you can increase or decrease resistance so your Asuna 4100 workout can remain challenging and effective throughout your fitness journey.

Your ASUNA 4100 is equipped with a quiet & smooth felt fabric brake pad system. The resistance system allows for various tension levels which allow you to create an intense workout thus burning more calories. Mix up your workout by changing your resistance workout to tone up and build muscles.


adjustable handlebar

Lose the calluses with the improved Sunny Health Handle Bars. Advanced ergonomic designed handles bars deliver a comfortable ride and allows for multiple hand positions. These easily adjustable and completely customizable handle bars provide comfort while enduring those long rides. The durable multi-grip handles can adapt to any biking condition adding extra comfort in rough conditions. Padded and slip free to provide extra safety and ease.


Fitting & Adjustments

The seat can be adjusted for height and proximity to handlebars for setting up your cycle bike, sizing and fitting.

  • Adjustable Seat to Handlebar Distance: Min 14" / Max 25"
  • Max User Leg Inseam: Min 30" / Max 38"

Foot Pedals

Keep your momentum up and your feet moving safely with the Sunny Health and Fitness 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.


transportation wheels

Making the transformation of your home into your own personal fitness studio is effortless with these convenient transport wheels. Simply tilt and roll out for use or away for storage, no need for heavy lifting or muscle strain. The wheels at the front of the unit allow the user to move their bike around with ease, from room to room, or store it away out of sight.


water bottle holder

Stay hydrated in the most demanding of workouts. The convenient drinks holder keeps your favorite refreshing beverage at arm’s reach! Proper hydration will ensure your health and workout performance stays at optimum levels. Carrying your water bottle while you ride will help you to ride longer mileage without needing to stop for rehydration.

Video 2

Whether you are a fitness studio owner or an at-home fitness enthusiast, the ASUNA 4100 Commercial Indoor Cycling Bike is ideal for any type of use! Made of heavy-duty, commercial grade steel parts and materials, this bike can go the distance when it comes to durability and performance. Featuring pedals that accommodate both clip-in cycling shoes and standard gym sneakers, this bike is fit to suit any rider's preference! The ASUNA 4100's elite, commercial grade quality chain drive operation provides a smooth and quiet workout whether being used in a large gym or the comfort of your own home. This bike has a fully adjustable seat and handlebar, making it customizable and ideal for multiple riders...perfect for any fitness studio or exercise facility!

  • The 40 Lbs chrome flywheel delivers stability and riding momentum
  • Fully adjustable seat and handlebar for maximum comfort
  • Micro tension knob system allows for various resistance levels
  • Chain drive mechanism for smooth and quiet workouts
  • Heavy duty steel frame with built in transportation wheels for easy portability; 285 LBS user weight capacity
  • Pedals can accommodate SPD cycling shoes and has a cage for gym shoes
  • Integrated water bottle holder
  • Adjustable Inseam Height Max 30 in/ Min 38 in
  • SHIPPING WEIGHT: 121 lbs
  • SHIPPING DIMENSIONS: 42.5 x 9.5 x 35.5 in
  • Model No: 4100
  • UPC: 815749018038
  • PRODUCT WEIGHT: 110 lbs.
  • Max Weight Capacity : 285 lb
  • Adjustable Seat to Handlebar Distance: Min 14/ Max 25 in
  • Q-FACTOR: 168 mm
  • foot pedals: caged, SPD compatible
  • DRIVE MECHANISM: Chain Drive
  • flywheel weight: 40 lbs
  • Seat Dimensions: 10.5L X 6W X 2.5H in
  • WARRANTY: 5 YEAR – Structural Frame, 180 DAYS – Other Parts and Components.

Customer Reviews

4.8 Based on 6 Reviews
5 ★
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Tim P.

Great value, durable bike

The heavy steel frame is extremely durable and all of the joints are fully welded, not tack welded like some lesser quality brands. The bike comes well packaged and the parts protected, the smaller parts bagged. Assembly was incredibly easy and only took about 15 minutes total. Thanks to the wheels on the front support bar, lifting this up and rolling it around is an absolute breeze. The seat and handlebars are both fully adjustable up and down as well as forward and back, not to mention the seat pivots and locks securely in place. This indoor cycle fits my 5'6" frame fine and can easily adjust to fit those well over 6' without any problems at all. I was a bit surprised at just how smoothly and quickly the brake works.

sandra w.

Worthy of 5 stars

This is one great exercise bike. It was mostly preassembled and all the screws are already in place. It took less than 30 min to assemble. I set it up in my living room so that I could watch television while cycling. It is a very sturdy machine and holds me (260lbs) with no problems. My family also really enjoys using this for exercise. The nice thing about is that it's not HUGE like other equipment. It is actually rather small, but very well constructed. I really like this bike and, overall, feel that it is worthy of five stars.

Peter P.

More than exceeded my expectations

This bike more than exceeded my expectations. Extremely well build and easy enough for even me to assemble. I’m 5’2 and made adjustments in seat and handlebar height which was easy to do. I was really hoping that the spin action would be as good as the bikes at my gym and, thankfully, it was.

Nelson S.

Highly recommend

I’m 5’6 and weigh 265. I’ve used this bike almost every day and I can tell you that this thing is made to last and is definitely gym-quality. My workouts have been smooth and quiet and the bike feels stable during my workouts. Highly recommend to anyone looking for a good quality bike.

Tiff Y.

My whole family loves it

I really love this bike! I've taken spin classes for a few years, and this is definitely a gym-quality bike. I'm 5'9" and it fits me well and adjusts easily. The tension is adjustable. My whole family loves it. No kidding, there's a line to this bike some mornings! There isn’t a screen which isn’t a deal breaker for me since I normally stream the Cycle Cast app on my iPhone and blast their awesome workouts. Definitely one of my favorite purchases.