DiamondBack Exercise Bikes Review December 2018

DiamondBack Exercise Bikes Review 2018

updated December 1, 2018

The Diamondback range of exercise bikes are a brand of LifeCore, one of the most established fitness manufacturers in the United States. Diamondback exercise bikes are durable, easy to use and great value with every unit going through hours of testing before market release. Diamondback are big on customer care, with every bike coming with a 5 year warranty. In this article we review the best in the Diamondback range. We also compare 3 Diamondback alternatives.

DiamondBack Bikes In Depth

DiamondBack Fitness 510SR Recumbent Exercise Bike

Getting the proper fit is the first and most critical part of a great recumbent bike, and the Diamondback 510SR recumbent bike gives you all the options to achieve it. It’s got fore and aft seat adjustment, vertical back and lumbar settings and even an adjustable console. Recumbent positioning allows for ideal body positioning that places minimum stress on the lumbar region. The sculpted chair is incredibly comfortably, with it’s high back and thick padding.

The LCD display on Diamondback 510SR recumbent bike is easy to read and comprehensively fitted. It provides you with readouts of all of your essential training data, including calories burned, pulse rate and rpms. You also get 20 quickstart workout programs, and 16 levels of frictionless eddy current resistance, to challenge every training level.

The Diamondback 510SR has a very stylish design. Computer graphics are sporty and the frame features elegant curves. Extra features includes built-in speakers, a headphone jack, a stowaway magazine holder and a personal cooling fan. Integrated contact heart rate sensors are located in the handle bars for immediate and accurate pulse monitoring.

The frame on the 510SR is extremely well built. It is able to support a maximum user weight of 300 pounds and comes with a lifetime warranty. The brakes also carry a lifetime warranty, with 3 years on parts and electronics. The whole unit weighs in at 125 pounds. The 510SR is an excellent recumbent that is ideal for the elderly or people with lower back ailments who need a functional low impact workout.​


  • 20 quickstart workout programs
  • 16 levels of resistance
  • 300 pound max user weight


  • Seat adjustment is difficult
Diamondback Fitness 910SR Recumbent Exercise Bike

The Diamondback recumbent bike 910SR is the upscale version of the 510. It costs about a third more of the price. For that extra money you get 10 more workout programs and twice as many variable resistance levels, for a very impressive total of 32 each. You also get heart rate sensors on the handle bars as well as the option of integrating the bike’s computer with your own Polar chest strap sensor.

The fully customizable rider positioning on this Diamondback recumbent bike 910SR is key to its functionality. It has fore and aft seating adjustment, in addition to the console and handle bar adjustment. Oversized foot pedals with fully adjustable straps ensure that your legs are securely in place.

The high spec multimedia center on the 910SR Diamondback recumbent exercise bike keeps you motivated and engaged. You are able to monitor your real time workout data, such as your speed, time, calories burned, heart rate, watts and cadence. It also displays your target heart rate training zones. Built in variable speed fans keep you cool while you’re sweating.

The frictionless eddy current braking system on the 910SR provides for a smooth riding experience. A 14 pound magnetic flywheel combines with the brake system to enhance the natural riding motion. There is a one touch program quick start control for ease of operation. Extras include a magazine holder and water bottle holder. For 6 consecutive years, the 910SR has won the Fit professor award for best recumbent bike under $1000.​

Diamondback 5101C

The Diamondback fitness 5101C is an indoor training cycle that is built for style, performance and durability. The best of the Diamondback indoor bikes, it features 16 different resistance levels, allowing the rider to select the right intensity level for him. 14 different workout apps allow you to train to on a range of simulated terrains, keeping you both motivated and challenged. Included are 4 cardio workouts to work your most precious muscle.

The backlit LCD screen on the 5101C Diamondback spin bike provides you with an easy to read display of all of you vital training data, including cadence, calories burned and heart rate. This bike is exceedingly comfortable with thick padding on the saddle. The handle bars are also padded, sweat resistant and frictionless. Both seat and handle bars are fully adjustable to get the right positioning.

The frame of the 5101C Diamondback stationary bike is very solid, providing a rugged base to work from. This means that the bike won’t move around, even when you are pedalling at maximum intensity. The 31 pound flywheel allows for extra strength and for a very fluid, natural pedalling action. The maximum user weight on this recumbent cycle is 300 pounds.

The Diamondback indoor cycle 5101C is a very stylish, sporty looking bike. The frame has modern curved lines and the handles bars are racing type. The saddle on this Diamondback spinner is also of a racing bike model. Overall, this is a very functional, reliable, durable and high performing indoor cycle bike.​


  • 31 pound flywheel
  • 16 resistance levels
  • 14 workout apps


  • Heart rate monitor not very accurate

Check out the best bikes across every brand with our Best Exercise Bike Review 2018 and see how Diamondback stacks up against the rest.

DiamondBack Alternatives


The Sunny Health and Fitness Folding Recumbent Bike is a budget alternative to the Diamondback 510SR and 910SR. While nowhere near as high spec, stylish or robust as either of those models, it does provide a quality riding experience while doing a good job of protecting your lower back and knees.

Even though Sunny Health and Fitness Folding Recumbent Bike weighs in at just 35 pounds, and is collapsible to half of it’s original size, it has a sturdy frame that will see you through even the most demanding of cycle workouts. It can handle up to a maximum user weight of 235 pounds. It features an oversized comfortable seat and a solid back support to protect your lumbar region.

The monitor on the Sunny Folding recumbent is large and easy to read. It allows you to monitor all of your vital training data. In addition, there are 8 levels of magnetic resistance.


  • Compact and foldable
  • 8 levels of resistance
  • Wide, comfortable seat


  • Resistance levels not challenging for advanced users
Nautilus R614

The Nautilus R614 is a robust, feature packed alternative to the Diamondback recumbent bikes. It matches Diamondback in terms of the level of back support provided and has a quality, padded seat. On the R614 you get 20 levels of smooth resistance and 22 resistance programs.

The dial track display is something you don’t get on Diamondback bikes. Nautilus Connect goal tracking is another unique feature, allowing you to be constantly challenged with goals based on your performance. You also have the provision for exporting your workout data to the Nautilus website for later analysis. There is even a USB charging port on board.

The frame of the Nautilus recumbent is very rugged and secure. A pair of integrated levellers ensure that you are always pedalling on level ground, wherever you happen to be. Nice extras are a acoustic chambered speakers and a 3 speed fan.

The body and frame of the R614 is rock solid, providing two integrated levelers and a support center to provide the ultimate in rigidity. Added stability is provided by a large crossbar tube. The handlebars are ergonomically designed to provide ideal upper body positioning. You also get acoustic chambered speakers and a 3 speed fan with this exercycle.​


  • Lots of back support
  • 20 levels of resistance
  • 22 in-built programs


  • Difficult to assemble

Stamina Exercise are a strong competitor to Diamondback. Go to our Stamina Exercise Bikes Review 2018 to check out the best that they offer.

Exerpeutic LX7

The Exerpeutic LX7 is a worthy rival to the Diamondback 5101C. It’s 40 pound chrome rimmed flywheel is heavier than that offered by the Diamondback indoor cycle, meaning that you get a smoother, more natural feeling pedalling motion. You also get an LCD monitor that is able to track all of your essential workout statistics. The seat, pedals and handle bars are ergonomically positioned for ideal body placement when riding.

The saddle on the Exerpeutic LX7 is very comfortable and has four way adjustment to allow for precision positioning. Bi directional foot pedals allow you to pedal backwards to work different muscles. Basket toe cages also make sure that you are securely fitted. The frame is very secure, with the ability to handle a user weight up to 300 pounds.

The LX7 offers superior riding fluidity, quiet operation and a competitive price point.​


  • 40 pound flywheel
  • Monitor
  • Great price


  • Monitor is quite basic

Body Sculpture may not be the first name that comes to mind when you think of exercise bikes. Yet, they offer a superb range of home fitness bikes. Go to our Body Sculpture Exercise Bikes Review 2018 and discover their range.


The Diamondback range of bikes stand out for their stylish design, computer software and extra rider comfort level. Standouts are the two top recumbent bikes, the Diamondback recumbent bike 510SR and 910SR, with their superior back support and high level computer specs. We also love the 5101C Upright, which features high functionality and performance.

As alternatives to the Diamondback range, we selected the budget Sunny recumbent as a no frills quality ride at a great price that still protects the lower back. The Nautilus 614 matches the Diamondback recumbents specs, but adds personalized goal setting and data saving. Finally, the Exerpeutic LX7 offers a smoother, more fluid ride than the 5101C upright from Diamondback.

jim roose

My name is Jim Roose. I'm a former competitive power lifter and gym owner. I've bought millions of dollars of fitness equipment over the last 20 years. This site is my way of giving back to the fitness community that's done so much for me. Every article on here is carefully researched and written by me. Leave a comment if you have any questions.

DiamondBack Exercise Bikes Review 2018
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