I'll get right to the point, so you can go read another review. I find the BikeERG to be a quality training tool. I also own the Concept2 Rower and they are both awesome pieces of equipment to help you improve your workouts.

The Concept2 BikeERG will support up to 300 pounds of weight. One of the item that sets this apart from other bikes is the PM5 monitor for extensive training.  The PM5 does not require electricity to operate, and uses air resistance to create a very realistic riding experience. The combination of a damper and your pedal cadence control the overall resistance, so your riding experience is always under your control. The advantages of this system are a very natural feeling ride that responds instantly to your power and cadence. The addition of a damper makes it so you can control the resistance to a certain degree when pedaling, so it isn’t all cadence alone. You can go as fast as you want or scale it back for a recovery ride.

The Concept2 ERG provides a smooth ride. While the belt drive system does reduce noise a bit, this is still an air resistance flywheel, so there is a bit of whirring noise while riding.  There is no bottom bracket assembly in the crank, so you won't have to constantly replace the bracket and spindle as you do on spin bikes!

BikeERG has a black frame with a relatively compact frame that will fit in any corner or home gym. I've been on many spin bikes that way over 150 pounds and are tough to move around. The bikeERG is much lighter under 100 pounds with it's aluminum frame. It does not require electricity, no pluging in like a treadmill.

The PM5 monitor is battery operated but rider power-assisted, so the batteries will last a long time. I love the functionality of the PM5 monitor — you can ride as simple as you want or compete against other riders. Just get on and start to ride and the PM5 provides instant metrics on your cadence, speed, distance and time.

The home screen displays:

• Just Ride

• Select Workout

• Games

• Memory

• More Options

If you want a bike that has the advantages of air resistance, that also is easy to move and can be used by anyone — the Concept2 BikeERG is an excellent option.

Optional Accessories

The Concept2 BikeERG now includes a phone caddie with your bike purchase. This will hold your phone securely during your workout. Other optional add-ons include:

• BikeERG Water Bottle Holder

  • A water bottle holder clips to the inside of your handlebars to hold water bottles conveniently between you and the monitor.

• Toe Clips

  • Zefal toe clips attached to the front of your pedal to hold your shoe on the pedal more securely.

• Tablet Mount

  • The tablet mount attaches above the PM5 console to you can watch, compete or view a training program of your choice on your personal tablet.

• Floor Mat

  • The floor mat sits beneath your bike to protect your floors from any movement from the bike — and catch the abundant sweat that will drip down during a killer workout!

• Heart Rate chest straps

  • Both a Bluetooth Polar and Garmin chest strap are available as add ons from Concept2.

I had to have the toe clips.  They help for a much improved ride and workout.  You can also add your own toe clips, locking pedals, handle bars and seat if you like.  A must change if you've done any cycling.

In conclusion, I've had a few spin bikes and that all broke down either in the crank or bottom bracket assembly.  You will not have that problem with the BikeERG.  Just for the record, I'm not in CrossFit.  I do add both the Rower and BikeERG into my weight lifting workouts.

Here are also some Pro's and Con's:

Pro's