Nautilus U618 Upright Bike Review

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Nautilus U618 Upright Bike Review

Nautilus U618 Upright Stationary Exercise Bike is a light commercial quality bike with a sturdy and powerful built. Nautilus U618 Upright Stationary Bike Review 2021 can help you understand the qualities of the equipment. It comes with features that maximize the comfort and convenience and offer improved performance.

The trainer offers 29 workout programs inclusive of pre-set heart rate programs, interval training programs, weight loss programs, and customizable programs. It has an effective 30lbs flywheel that optimizes the drive system and supports a maximum of 325 lbs user weight.

The exercise bike offers the resistance up to 25 levels with Eddy Current Brake System. It comes with weighted pedals and 3 piece chrome crank system that offers smooth pedalingU618 Upright Bike offers greater comfort to the users through the adjustable seat.

Multi-position adjustable handlebars, and adjustable SightLine Console incorporated with dual backlit display windows. To enable the users to monitor heart rate during the workout, the bike is compatible with a wireless chest strap.

It motivates the user to have endurance training with inbuilt speakers, MP3 player and a USB charging port. U618 Upright Exercise Bike, with its app-based tracking tools and performance training programs.

Offers premium quality workout experience just like a commercial bike, but costs a few hundred dollars lesser than them and is available in the market for $700.

Best Suited to Whom?

U618 Upright Bike is a top-end home exercise bike by Nautilus that is suitable to all types of users from casual users to avid-users. It is also one of the Best Exercise Bikes for Home Use with commercial quality features. The bike has a sturdy yet sleek built and offers comfortable workout experience with its user-convenient features.

The Upright Bike comes with 29 pre-set programs and 25 levels of magnetic resistance, offering a wide range of training programs to the users to choose from, even as selecting the best-suited program to their profile.

While the bike offers excellent performance and user-comfort and can handle user weight up to 325lbs. It is not budget-friendly. It is best suitable for users with higher budgets and costs around $700 in the market.

Nautilus U618 Upright Bike Assembly, Design and Build Quality


The Assembly of U618 Upright Bike takes only about an hour as its body comes assembled and only the other components need to be attached by the users. The Instruction Manual of U618 is delivered along.

With the box which gives clear step-by-step instructions to the users for completing the process. Also, the tools required to finish the assembly is included in the box making the process easy and quick.

Design and Build Quality

U618 Upright Bike has a much sleeker look with the measurement of 58.3”H x 24”W x 38.5”L and weighs about 65 pounds. This exercise bike has a sturdy construction and is ergonomically designed offering comfort and convenience during the long hour workouts.

It is designed with heavier flywheel and belt drive system to make the operation smooth, quiet and consistent. To facilitate the easier storage and movement after the use, the exercise bike comes with transport wheels. The team at Nautilus focuses on offering increased comfort.

To the users and hence, designed the Upright Bike with a lot of adjustable features like 3-speed adjustable cooling fan, 4-way adjustable seat, and multi-position handlebars with speed and resistance control buttons.

Nautilus U618 Upright Bike Features


U618 Upright Bike comes with Nautilus Gel fore/aft adjustable seat that helps the users adjust the seat vertically or horizontally to get the maximum comfort. It is extremely important to choose the exercise bike with comfortable seating, especially for endurance training.


This Upright Exercise Bike comes with the adjustable SightLine Console that can be tilted to reduce the glare for the better view. The console is incorporated with two blue backlit LCD displays for easy reading of the training progress.

Magnetic Brake

U618 Upright Bike is designed with Eddy Current Braking System and has a magnetic resistance up to 25 levels. The higher resistance makes the rides smoother, quiet and consistent.

Drive Type

This Upright Bike has the 30lbs effective flywheel that optimizes the drive system. The belt drive system with the perimeter weighted flywheel not only improves the effectiveness of the drive train but also makes the operation free from jerks.

Crank System

U618 Upright Bike has a heavy-duty crank system with its crank arms designed using solid steel. Its 3 piece chrome crank system is equipped with weighted pedals to offer stability.

Heart rate Monitoring

For easy monitoring and controlling of heart rate during the workouts, this Upright Exercise Bike is compatible with wireless chest strap and also has contact pulse grips at the handlebars.


The Upright Bike is sturdy in construction and has a coated steel frame making it durable and powerful enough to support higher user weight up to 325lbs.


The exercise bike comes with weighted pedals that feature adjustable straps allowing the users to keep the feet position throughout the training and ensure maximum foot stability.

Device Charger

It has a USB charging port incorporated in its console to help the users connect to the smart devices or charge them during the workout to save from drying up.

Extra Features

Nautilus U618 Upright Bike has Bluetooth connectivity and syncs with Nautilus Trainer 2 App for performance tracking and with RideSocial App for real-time training with the people around the world. It also has some user-convenient features like water bottle holder, cooling fan and inbuilt speakers for increased comfort.

Nautilus U618 Upright Bike Workout Programs

Pre Set Workout Programs: Nautilus brand U618 Upright Exercise Bike gives a range of options with 29 pre-set workout programs inclusive of 4 user-defined programs that allow the users to save their profile for reviewing later.

The pre-set programs include 12 profile programs namely Ride in the Park, Easy Tour, Rolling Hills, Stream Crossing, Cross-training, Pike’s Peak, Mount Hood, Pyramids, Summit Pass, Uphill Finish, Intervals, and Stairs.

 The rest of the programs are inclusive of 9 heart rate programs, 2 fitness test programs, 1 recovery program, and 1 quick start program.

These programs allow users to set the difficulty level, time, distance and calories based on their fitness goals.

Nautilus U618 Upright Bike Warranty

The company provides an excellent Warranty on U618 when compared to the other models in the home bike series. U618 Upright Bike provides a 15-year warranty on frame, 3-year warranty on parts and electronics, and a 1-year warranty on labor.

Nautilus U618 Upright Bike Pros and Cons


  • 30lbs weighted flywheel
  • 25 levels of Magnetic Resistance
  • 3 piece chrome crank system
  • 29 pre-set workout programs
  • 4-way adjustable handlebars
  • Weighted Pedals with strap
  • Telemetry Enabled Heart rate Monitoring
  • Mixed Reality Training
  • Performance Tracking
  • Media Shelf
  • USB charging port
  • Better Warranty
  • Water bottle holder
  • Easy Assembly


  • Not very budget-friendly
  • No high-resolution display
  • User capacity is not excellent


Nautilus Exercise Bike is excellent training equipment with heavier flywheel, higher resistance level, higher pre-set programs, sleeker design, and light commercial built.  This stationary exercise bike offers low impact cardio workout while providing smother and consistent rides.

It has similar features like the mid-range U616 Upright Bike but has a commercial built and a better drive system, and costs around $200 more. It also offers a better a warranty on its frame. If you are looking for an exercise bike that not only has some excellent features.

But also the durability and strength, then U618 could be your choice. In fact, many of the experts have reviewed U618 as one of the Best Upright Stationary Exercise Bikes available in the market.