| Unit | Size | Supported weight | Flywheel weight | Resistance | Fitness monitoring |
|---|---|---|---|---|---|
YESOUL S3 Check Discounted Price | L:40" W:20" H:51" | 265 lbs | 16.5 lbs | Manual magnetic | Built-in Bluetooth, YESOUL app, Zwift compatible, Kinomap compatible |
The YESOUL S3 is one of the indoor cycling bikes released in 2020. It’s a smart-connect exercise bike designed for spin workouts. It doesn’t come with a performance monitor but does have a built-in Bluetooth module that allows you to sync it with apps such as Kinomap and Zwift. Plus, the bike comes with its own app.
Key Features and Specifications
- Assembled dimensions: 40L x 20W x 51H inches (101L x 51W x 130H cm)
- Assembled weight: 68.3 lbs (31 kg)
- Flywheel weight: 16.5 lbs (7.5 kg)
- Supported weight: 265 lbs (120 kg)
- Seat: 4-way adjustable
- Drive system: Belt
- Resistance: Magnetic, 100 levels
- Fitness monitoring: Built-in Bluetooth, YESOUL app, compatible with Kinomap and Zwift
- Extras: Bluetooth HR armband, device holder, bottle holder.
- Warranty: 1 year limited
Frame construction
The YESOUL S3 indoor cycling bike features a triangular frame construction similar to the VIGBODY HL-M01 bike. 
However, its frame incorporates thicker tubes, has a curved longitudinal base bar, and features superior aesthetics. The frame is made of carbon-steel tubing double-coated with a corrosion-resistant paint finish. There are two main color versions available for this bike, these being black and white. Both versions have the same specs and features.
The bike is not extremely large and bulky compared with other fitness machines, such as treadmills or front-drive ellipticals, for example. With all the parts assembled, it is approx. 40″ (101 cm) long, and 20″ (51 cm) wide. Also, its highest point, with the handlebar extended all the way up, is 51″ (130 cm). It is recommended, though, to allow a few feet of clearance all around the bike, for ease of access and safe usage.
The bike is not super heavy compared with other spin bikes. One of the main reasons is that the integrated flywheel only weighs 16.5 lbs (7.5 kg). Thus, the bike’s net weight is approx. 68 lbs (31 kg). This being said, it can be carried and assembled by only one person. Also, once it is assembled, it can easily be moved as its front base features a set of transport wheels.
Although the bike is not too heavy, it offers superior stability. One of the main reasons is its low center of gravity. Plus, both its base bars feature adjustable levelers with large rubber pads. Thus, it is not necessary to place and use the bike on a mat, however, it is recommended.
Seat and handlebars
The YESOUL S3 indoor cycling trainer includes a saddle designed for superior comfort. It features a gel top 
cover, integrates a layer of foam padding, and has a durable inner shell made of nylon material. Its top is contoured with a median groove for improved breathability.
It’s also important to mention that the seat features a standard, collar-based attachment system. This being said, if by any means you managed to wear it out, or you simply want it replaced, compatible options are widely available.
The bike’s seat is four-way adjustable (up, down, front, back). Its upright post offers multiple adjustment positions with a span of 31″ – 40″ (79 – 101 cm) from the floor. The horizontal slider also adds several inches of front-to-back adjustment. Thus, the bike can accommodate users between 4’11” – 6’2″ (150 – 188 cm). Taller persons should still be able to use this bike but they may not benefit from a full leg extension. Also, the bike is rated for a maximum user weight limit of 265 lbs (120 kg).
The YESOUL S3 bike features a multi-grip handlebar. It offers the possibility to adopt a cruise grip, a standard grip, a close grip, and a climbing grip. It is fully covered by a layer of high-density foam for an improved grip. It does not have pulse sensors but a Bluetooth heart rate armband is included with the bike. Plus, the bike also includes a large tablet holder made of durable polypropylene material which attaches to the front section of the handlebar. This accessory is large enough to accommodate any tablet up to 11″ in diagonal.
The bike’s handlebar is only two-way adjustable (up, down). It does not have a horizontal slider like the seat. It offers 9 adjustment positions from 46″ to 51″ (117 – 130 cm) above the floor.
Resistance system
The YESOUL S3 indoor cycling bike is equipped with a manual magnetic resistance system. This means you don’t
need to connect it to a power source and you don’t need a power adapter or power cord for it. But on the other hand, the bike cannot adjust the resistance automatically.
The bike’s resistance system consists of a magnetic brake attached under the main oblique tube of the bike and to the tension knob. Therefore, when you turn the knob clockwise, the magnets move closer to the flywheel which increases the pedaling difficulty. The main advantage of a magnetic brake is that the brake pad does not touch the flywheel. Thus, the pedaling motion is drag-free, seamless, and whisper-quiet.
The bike’s tension knob does not have pre-determined resistance levels. However, from the lowest resistance point to the highest, there can be distinguished approx. 100 levels of difficulty. As a general idea, with the magnets as close as possible to the flywheel, the pedaling motion delivers quite a bit of difficulty, simulating a steep climb.
Last but not least, the bike’s brake features a small rubber pad at the front. Therefore, in case you need to stop the flywheel from spinning, you can press on the tension knob. This emergency braking feature is quite necessary as stopping the flywheel with your feet from the pedals is not recommended and can lead to injuries.
Drive system
The YESOUL S3 exercise bike is equipped with a rather light flywheel compared with other spin bikes, such as 
the Spirit Fitness XIC600, for example. It only weighs 16.5 lbs (7.5 kg). However, it does have a perimeter-weighted structure for improved inertia which is great for spin workouts. Also, since the bike is equipped with a magnetic brake, the top resistance levels still deliver a very consistent pedaling motion and high levels of difficulty.
The flywheel is bi-directional; in other words, you can pedal in reverse if you want. However, the bike’s drive system features a standard exercise bike construction so you cannot coast on it. When pedaling in reverse, the resistance remains constant, given by the difficulty generated by the magnetic brake.
The crankset features a large pulley made of durable thermoplastic material with nylon-coated steel arms. The included pedals are also made of metallic alloy. They have an anti-skid design and toe cages for extra thrust. They do not integrate SPD elements for spin shoes. However, their threads are standard 9/16 so compatible options are widely available.
The bike’s drive system uses a poly-v belt resistant to stretching and abrasion. This belt drive system comes with several advantages over a chain drivetrain. First of all, you don’t need to worry about its lubrication. Second of all, it generates slightly less vibration than a chain. And third of all, you won’t have to deal with problems such as stiffened chain links.
Fitness app and Bluetooth connectivity
The YESOUL S3 indoor cycling bike does not include a fitness monitor. However, it has a built-in Bluetooth module
that allows you to sync your bike with your smartphone or tablet via the YESOUL Fitness app. All you have to do is scan the provided QR code to install the app, register, and then use the app’s interface to monitor your workout data. The app shows multiple workout metrics including time, distance, speed, cadence, pulse, and more. In order to read your pulse, you also have to wear the provided wireless armband.
The YESOUL app also offers 255 minutes of scenic cycling, several courses of endurance fat burning, as well as online workout data tracking. However, the bike is also compatible with other similar fitness apps, such as Kinomap and Zwift. It is not compatible with the Peloton app (at least not so far). So, in case you already have a subscription to these apps, you should be able to sync your bike with them.
The internal Bluetooth module is battery-powered. It requires a 3V “button-type” CR2477 battery which is included. Its location is at the top of the handlebar under the insulation strip.
Assembly and Maintenance
The main body of the bike comes pre-assembled. You only need to attach the two base stabilizers, the pedals, the handlebar tube, the handlebar, and the device holder. This shouldn’t take more than 30 minutes of your time. All the necessary tools are included and the manual provides clear assembly instructions.
For maintenance, you only have to keep the bike clean. Since it has a belt drive system, the drivetrain does not require lubrication. Also, since the brake is magnetic, it doesn’t require lubrication or replacement either. So, other than keeping the bike clean, you only have to check for loose bolts and parts from time to time.
The Pros
- Durable steel frame – can support users up to 265 lbs;
- Aesthetic design;
- Transport wheels on the front base;
- Adjustable levelers on both base bars;
- Metallic alloy pedals with toe cages;
- Multi-grip handlebar;
- Tablet holder included;
- Bottle holder included;
- Bluetooth HR armband included;
- 4-way adjustable seat;
- Maintenance-free belt drive;
- Perimeter-weighted flywheel for improved inertia;
- Frictionless and whisper-quiet magnetic resistance;
- Built-in Bluetooth module;
- Free YESOUL app;
- Compatible with Kinomap and Zwift;
- Little maintenance required;
- Easy to assemble;
- All the tools required for the assembly are included.
The Cons
- No fitness monitor;
- No front-to-back adjustability for the handlebar.
Summary
The YESOUL S3 is an indoor cycling bike designed for spin workouts. It is equipped with a manual magnetic resistance system, a 16.5 lbs flywheel, a 4-way adjustable seat, and has a durable frame rated for a maximum user weight limit of 265 lbs. It also has built-in Bluetooth, so you can sync it with your phone via the YESOUL app, Zwift, or Kinomap. It’s a great bike for high-intensity cardio training, muscle toning, stamina development, and weight loss.