ONETWOFIT OT124 Indoor Cycle

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The ONETWOFIT OT124 is one of the indoor cycling bikes released in 2021. It’s an exercise bike made for home use offering a range of features similar to the VIGBODY HL-5230. However, its frame has a slightly different design and its integrated flywheel is heavier.

Key Features and Specifications

  • Assembled dimensions: 40.6L x 21.7W x 45.7H inches (103L x 55W x 116H cm)
  • Shipping weight: 90.4 lbs (41 kg)
  • Flywheel weight: 40 lbs (18.1 kg)
  • Supported weight: 330 lbs (150 kg)
  • Seat: 4-way adjustable
  • Drive system: Belt
  • Resistance: Friction
  • Fitness monitor: Time, speed, RPM, distance, odometer, calories, scan
  • Extras: Phone holder, elbow rests

Frame construction

The ONETWOFIT OT124 indoor cycle features a triangular frame with its main tube and the front fork tubes slightly curved for improved overall sturdiness and aesthetics. The steel tubes of the main frame are all oval. The handlebar post, the handlebar tube, the seat slider tube, and the seat slider post are rectangular. And the main grips of the handlebar are cylindrical.

All the steel tubes in the main frame are double-coated with a corrosion-resistant paint finish. The colors used are red and black, these being the only colors available for this bike. The seat slider and the flywheel are chrome-plated. Also, the drivetrain guard, the side covers of the flywheel, and several other small parts are made of ABS plastic material.

The bike is fairly heavy. Its packaged weight is approx. 90.4 lbs (41 kg) so it might need two persons for transport. However, once the bike is assembled, it can easily be relocated by only one person; its front base has transport wheels. Also, both base bars have adjustable levelers so you can perfectly stabilize the bike on any type of floor. Its overall weight and its low center of gravity also play an important role in its overall stability.

Last but not least, the bike is not too large. It is approx. 40.6″ (103 cm) long, and 21.7″ (55 cm) wide. It is recommended, though, to allow at least two feet of clearance all around it, for easy access and safe usage.

Seat and handlebars

The ONETWOFIT OT124 indoor cycling bike is equipped with a four-way adjustable seat. Its upright post offers several adjustment positions while its horizontal slider adds several inches of front-to-back adjustment. This being said, the bike should be able to accommodate users between 5’0″ and 6’4″ (153 – 193 cm). It is also rated for a maximum user weight limit of 330 lbs, just like the ONETWOFIT OT139 model.

The included saddle is designed for superior comfort. Its top section integrates a thick layer of cushioning with a durable vinyl cover. It has a median groove for improved breathability. It also has suspension springs at the rear which enable it to adapt better to your movement during seated workouts.

The handlebar features a multi-grip design. It is equipped with a set of elbow rests that allow you to adopt a comfortable aero grip. A climbing grip, a close grip, and an off-road grip are also possible with this handlebar. It’s important to mention, though, that the handlebar does not have pulse sensors.

The bike’s handlebar is only two-way adjustable (up, down). It offers an adjustment span of approx. 3.6″ (9.1 cm), between 42.1″ (107) above the floor, to 45.7″ (116 cm). Its side grips are covered with a layer of PVC foam for improved contact and comfort. It also has a plastic cover at the base which can serve as a phone holder.

Drive system

The OT124 indoor cycling bike is equipped with a 40 lbs (18.1 kg) flywheel which is not bad for a home-use bike. Most commercial spin bikes have similar flywheels. It is also perimeter-weighted in order to provide an aggressive inertia which is great for spinning.

The flywheel is bi-directional. Thus, you can pedal in reverse if you want. This is a plus, as you can alternate forward pedaling sessions with reverse pedaling sessions in order to engage more muscle groups. It’s important to mention, though, that coasting is not possible on this bike. The flywheel stops from spinning if you stop pedaling, and the monitor will also stop from counting RPMs, calories, etc.

The bike is equipped with a heavy-duty crankset. It features long and flattened arms with a black paint finish, similar to road bike. The pedals are aluminum-made. They have toe cages and straps in case you need to keep your feet secured. However, they do not have SPD clips for spin shoes. Their threads are standard 9/16″, though, so you can easily find replacements if needed.

The bike is equipped with a belt drive system. It uses a durable poly-v belt completely covered by a large ABS guard. This belt drive comes with several advantages over a chain drive. To begin with, you don’t have to lubricate it periodically. It also generates less vibration than a chain contributing to the overall smoothness of the ride.

Resistance system

The ONETWOFIT OT124 exercise bike is equipped with a standard friction resistance system. This means that you don’t need to connect it to a power source, and you don’t need a power cable or adapter for it. However, the bike’s fitness monitor does not have pre-set programs and cannot adjust the resistance automatically.

The bike’s resistance system consists of a brake attached to the frame above the flywheel, featuring a wool felt pad. The brake is also connected to the bike’s tension knob. So, when you turn the knob clockwise, the pad applies more friction to the flywheel increasing the pedaling difficulty.

The bike’s tension knob doesn’t have pre-set levels (or clicks) like many magnetic resistance bikes. You simply turn it until the brake provides a pedaling difficulty you’re comfortable with. As a general idea, you can tighten it up to a point where the bike simulates a steep hill climb which is great for strength workouts or high-intensity cardio.

Needless to say, the brake pad will eventually wear out, and will require replacement. It should last, though, for at least one year, even if you use the bike for a few hours a day. It is also recommended to lubricate it with a few drops of silicone lubricant, in order to allow the flywheel to spin smoothly.

Fitness monitor

The ONETWOFIT OT124 indoor cycle is equipped with a fitness monitor that offers a few extra features than a basic model. First of all, its display is divided into 5 sub-sections, so it indicates up to 5 workout metrics at once. It tracks time, speed, distance, RPM, and calories burned. It also has a pulse reading function, but the bike does not have pulse sensors; it is not clear if it can read pulse from a wireless transmitter.

The monitor unit does not have pre-set programs but does offer the possibility to set workout goals for time, distance, and calories. If, for example, you set a 5-mile distance goal, the monitor will count down from the selected value. This way, you can keep track of your progress from one workout session to another.

The monitor unit is fairly easy to use. It has three buttons – Up, Down, and Enter. The Up/Down buttons allow you to select the desired workout metric as well as adjust a workout goal value. The Enter button covers the confirmation function as well as the unit’s reset function. You can press it down for a few seconds to clear all the data on the monitor.

The monitor unit is battery-powered and batteries are not included with the bike. It starts up automatically when it detects flywheel movement, and also automatically turns off if it does not detect any activity on the bike for more than a few minutes.

Assembly and Maintenance

The bike’s main frame comes pre-assembled, with the flywheel, the brake, the crankset, and the belt already attached. All you need to do is connect the two base bars, the seat, the pedals, the handlebars, and the fitness monitor. This shouldn’t take more than an hour of your time. A basic toolkit is included and the manual provides clear assembly instructions.

For maintenance, it is recommended to keep the bike clean. The brake pad may require lubrication from time to time, and when it’s used up, replacement. Other than that, it is also recommended to periodically inspect the bike, to make sure that all the parts still function correctly.

The Pros

  • Sturdy construction – it can support users up to 330 lbs;
  • Aesthetic design;
  • Both base bars have adjustable levelers
  • Transport wheels on the front base;
  • 4-way adjustable seat;
  • High-comfort saddle with a median groove for extra breathability;
  • Multi-grip handlebar with elbow rests;
  • Standard friction resistance;
  • Heavy (40 lbs), perimeter-weighted flywheel for aggressive inertia;
  • Heavy-duty crank, able to support any user up to the maximum listed weight, in upright pedaling position;
  • Durable (aluminum alloy) pedals with toe cages;
  • Maintenance-free belt drive;
  • Fitness monitor included – it tracks time, speed, distance, RPM, and calories burned;
  • Phone holder included;
  • Easy to assemble;
  • Little maintenance required.

The Cons

  • No pulse sensors;
  • No backlight on the fitness monitor;
  • Batteries for the monitor are not included;
  • No bottle holder.


The ONETWOFIT OT124 is an indoor cycling bike made for home use. It features a 40-lbs flywheel, a standard friction resistance system, a 4-way adjustable seat, and a fitness monitor that tracks the most important workout metrics. It also offers an excellent user weight limit of 330 lbs. It’s a fairly decent bike for spin workouts, stamina development, strength development, and weight loss. It’s also an affordable bike, currently available for less than $200.

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